JPH08119066A - Window washer device - Google Patents

Abstract

PURPOSE: To inject and coat treating fluid simultaneously and automatically together with washer fluid with less equipment by feeding the treating fluid in a chamber on the inside of a bellows out of a treating fluid feeding amount regulating device by the pressure of the washer fluid in chamber on the outside of the bellows. CONSTITUTION: Washer fluid A is led into a chamber 108 on the outside of a bellows 109 through a line 122 branched from a washer fluid pipe 106. On the other hand, water repellent fluid B is led from a treating fluid tank 110 into a chamber 115 on the inside of the bellows 109. When the water repellent fluid B in the chamber 115 on the inside of the bellows 109 is fed out of a treating fluid feeding amount regulating device 107 by the pressure of the washer fluid A in the chamber 108 on the outside of the bellows 109, it is merged with the washer fluid A at a merged point 162, and water repellent mixed fluid is injected from an injection nozzle 105 to a window. The injected water repellent mixed fluid is collided with the surface of the window and wiped off with a wiper and, thus coated evenly on the surface of the window.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a window washer device for treating a window of a vehicle or the like with a liquid, and in particular, storing a treatment liquid such as water repellent in a tank different from the washer liquid, A window in which the treatment liquid is mixed and ejected at the time of jetting the washer liquid, the properties of the treatment liquid are not deteriorated, and the treatment liquid can be automatically spray-applied simultaneously with the washer liquid jet with less equipment without manual application. Regarding the washer device.

[0002]

2. Description of the Related Art Conventional window treatments include cleaning with a cleaning liquid, water repellency, and hydrophilicity. Since the issues are the same, the following description will be given using water repellency as an example. As a conventional water-repellent means, for example, an operator has thinly applied a water-repellent liquid to the window after removing dirt such as an oil film on the window with a detergent or an abrasive.

For example, in the water-repellent glass disclosed in JP-A-3-232747, an intermediate layer made of at least one of inorganic oxides, carbides and nitrides is provided between the glass substrate and the water-repellent layer. As a result, the alkali component in the glass substrate is prevented from entering and diffusing into the water repellent layer, the deterioration of the water repellent layer due to ultraviolet rays and the like is suppressed, and the decrease in water repellency is prevented.

[0004]

However, in such a conventional coating method, the applied water repellent liquid may be worn away by a wiper or may be peeled off by ultraviolet rays after several months, resulting in a decrease in the effect. However, there is a problem that it is necessary to apply the coating repeatedly. Also,
There is also a method of mixing the water-repellent liquid with the washer liquid and adding it to the tank for the washer liquid. there were.

The present invention has been made in view of the above, and a treatment liquid such as a water repellent liquid is stored in a tank different from the washer liquid, and the treatment liquid is mixed and ejected when the washer liquid is ejected. The processing liquid can be automatically spray-applied at the same time as the washer liquid spraying with less equipment, without degrading the characteristics of the processing liquid and requiring manual application.

[0006]

In order to solve the above problems, a window washer device according to claim 1 of the present invention, as shown in FIG. 1, is a washer liquid tank 103 for storing a washer liquid A, and Washer liquid tank 1
03, a washer liquid pump 102 for delivering the washer liquid A, and a treatment liquid tank 110 for storing the treatment liquid B.
A processing liquid supply amount adjusting device 107 for adjusting the amount of the processing liquid B delivered from the processing liquid tank 110, an injection nozzle 105 for injecting the washer liquid A and / or the processing liquid B, and the washer liquid A. And a check valve 119 on the way of the washer liquid pipeline 106 that guides the processing liquid B from the washer liquid pump 102 to the injection nozzle 105, and the conduit that guides the processing liquid B from the processing liquid supply amount adjusting device 107 to the injection nozzle 105. 118 for processing liquid provided with
And a switch means 101 for controlling the operation of the washer liquid pump 102, and the processing liquid supply amount adjusting device 107 is a bellows 109 that uses the washer liquid A discharged from the washer liquid pump 102 as a working liquid. And introducing the washer liquid A into the chamber 108 outside the bellows 109 via the branched line 122 of the washer liquid pipe line 106, and the treatment liquid B inside the chamber 115 of the bellows 109. In the processing liquid tank 110
And the processing liquid B in the chamber 115 inside the bellows 109 is introduced by the pressure of the washer liquid A in the chamber 108 outside the bellows 109.
It is sent out of 7.

A window washer device according to a second aspect of the present invention is the window washer device according to the first aspect, wherein the processing liquid supply amount adjusting device 107 is a chamber inside the bellows 109 from the processing liquid tank 110. 11
The check valve 114 in the control device is provided in the path of the processing liquid B that reaches to 5.

The window washer device according to a third aspect of the present invention is the window washer device according to the first or second aspect, wherein the processing liquid supply amount adjusting device 107 is fixed to the bellows 109 as shown in FIG. A piston 212 is provided which moves in conjunction with the bellows 109 and has a processing liquid pressure receiving area smaller than the washer hydraulic pressure receiving area in the operation axis direction of the bellows 109.

Further, the window washer device according to a fourth aspect is the window washer device according to the first, second or third aspect, as shown in FIG. 3, FIG. 4, FIG. 5 or FIG. The adjusting device 107 includes throttling means 316, 516, 420 or 620 for adjusting the throttling amount of the treatment liquid B while the treatment liquid B extruded from the bellows 109 reaches the treatment liquid pipe 118. It is a thing.

[0010]

In the window washer device according to the first aspect of the present invention, as shown in FIG.
3, washer liquid A is stored, and the washer liquid pump 102 from the washer liquid tank 103 to the washer liquid conduit 106 by the on control of the switch means 101.
It is ejected to the injection nozzle 105 via.

On the other hand, in the treatment liquid tank 110, a water repellent liquid,
A treatment liquid B such as a hydrophilic liquid is stored and discharged to the injection nozzle 105 via the treatment liquid supply amount adjusting device 107 and the treatment liquid pipe 118.

The processing liquid supply amount adjusting device 107 operates based on the washer liquid A discharged from the washer liquid pump 102, and adjusts the amount of the processing liquid B sent from the processing liquid tank 110. 、 Washer liquid A
It is possible to mix a certain amount of the treatment liquid B in one injection of the above, and inject it from the injection nozzle 105 toward the window.

In this way, the treatment liquid B such as a water repellent liquid is stored in the tank 110 different from the washer liquid A, and the treatment liquid B is mixed and ejected when the washer liquid A is ejected.
At the same time as injecting the washer fluid A with less equipment, the characteristics of the treatment fluid B are not deteriorated due to the decomposition of superfluid water as in the conventional method, the treatment fluid B is not manually required, and a new pump is not required. Can be sprayed automatically.

In the treatment liquid supply amount adjusting device 107, the washer liquid A is supplied to the chamber 108 outside the bellows 109.
Is introduced into the chamber 11 inside the bellows 109 by introducing the treatment liquid B into the chamber 11 inside the bellows 109.
5 is introduced from the processing liquid tank 110 to the bellows 109.
The processing liquid B in the chamber 115 inside the bellows 109 is sent out of the processing liquid supply amount adjusting device 107 by the pressure of the washer liquid A in the outside chamber 108.

As a result, the washer liquid tank 103
If washer fluid A is empty, washer fluid A
Pressure does not rise, and therefore, when the washer liquid A is not jetted, the treatment liquid B is also not jetted. Further, a new pump is not required, and the treatment liquid B can be automatically spray-applied simultaneously with the spraying of the washer liquid A with less equipment.

Further, in the window washer device according to the second aspect, the processing liquid supply amount adjusting device 107 is provided with the processing liquid B route from the processing liquid tank 110 to the chamber 115 inside the bellows 109, and a check valve is provided inside the adjusting device. A valve 114 is provided to prevent backflow of the processing liquid B to the processing liquid tank 110.

Further, in the window washer device according to the third aspect of the present invention, as shown in FIG.
7, a piston 2 having a processing fluid pressure receiving area smaller than the washer fluid pressure receiving area in the operation axis direction of the bellows 109.
The piston 212 is fixed to the bellows 109 and moves in conjunction with the bellows 109. Thereby, the processing liquid B in the processing liquid supply amount adjusting device 107
It is possible to more reliably perform the operation of adjusting the supply amount of.

Further, in the window washer device according to the fourth aspect, as shown in FIG. 3, FIG. 4, FIG. 5 or FIG.
In the processing liquid supply amount adjusting device 107, the bellows 109
During the time until the processing liquid A pushed out of the processing liquid reaches the processing liquid conduit 118, a throttle means (throttle valve 316, 516, or stopper 420, which adjusts the throttle amount of the processing liquid B).
620), it is possible to prevent the use of the processing liquid B more than necessary and save the consumption of the processing liquid B by adjusting the squeezing means.

[0019]

【Example】

[First Embodiment] A window washer device of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram of a window washer device according to a first embodiment of the present invention. In the figure, the window washer device of this embodiment is provided with a washer liquid tank 103 for storing the washer liquid A and an injection nozzle 105.
Washer liquid pump 10 for delivering washer liquid A to the
2, a processing liquid tank 110 for storing the processing liquid B, a processing liquid supply amount adjusting device 107 for adjusting the amount of the processing liquid B, an injection nozzle 105 for injecting the washer liquid A and the processing liquid B,
A washer liquid conduit 106 that guides the washer liquid A from the washer liquid pump 102 to the jet nozzle 105, and the treatment liquid B from the treatment liquid supply amount adjusting device 107 to the jet nozzle 10.
A washer switch (corresponding to a switch means in the claims) for controlling the operation of the processing liquid pipe 118 leading to 5 and the washer liquid pump 102.
It is composed of 01.

That is, the window washer device of this embodiment is constructed by newly adding the processing liquid tank 110, the processing liquid supply amount adjusting device 107, the processing liquid pipe 118 and the check valve 119. .

Further, in the treatment liquid tank 110, a water-repellent liquid,
A treatment liquid B such as a hydrophilic liquid is stored and discharged to the injection nozzle 105 via the treatment liquid supply amount adjusting device 107 and the treatment liquid pipe 118. In the following description, a water repellent liquid is used as the treatment liquid B, but it goes without saying that the same applies to a hydrophilic liquid.

The processing liquid supply amount adjusting device 107 includes an outer chamber (corresponding to an outer chamber of the bellows 109 in the claims) 108, a bellows 109, a spring 111, a check valve (the adjusting device in the claims). 114 corresponding to the inner check valve, an inner chamber (corresponding to the inner chamber of the bellows 109 in the claims) 115, and the outlet 1.
It is configured with 17. In addition, the washer liquid pipeline 106 is provided with a processing liquid supply amount adjusting device 107 at a branch point 161.
The washer liquid A is supplied to the outside chamber 108 of the processing liquid supply amount adjusting device 107 via the branched pipe 122.

The bellows 109 uses the washer liquid A discharged from the washer liquid pump 102 as a working liquid, and is controlled by the amount of the washer liquid A. That is, the washer liquid A is introduced into the chamber 108 outside the bellows 109 via the branched line 122 of the washer liquid pipe line 106, while the water repellent liquid B is introduced into the chamber 1 inside the bellows 109.
15 is introduced from the treatment liquid tank 110 into the bellows 10
The water repellent liquid B in the chamber 115 inside the bellows 109 is sent to the outside of the treatment liquid supply amount adjusting device 107 by the pressure of the washer liquid A in the chamber 108 outside 9.

The water repellent liquid B sent from the treatment liquid supply amount adjusting device 107 is treated by the treatment liquid pipe 1 having a check valve 119.
Through the confluence point 16 of the washer fluid conduit 106
2, and joins with the washer liquid A at the merge point 162, and the water-repellent mixed liquid is jetted from the jet nozzle 105.

Next, the operation of the window washer device of this embodiment will be described. When the washer switch 101 is turned on, the washer liquid pump 102 is activated to send the washer liquid A in the washer liquid tank 103 toward the jet nozzle 105. Therefore, the washer liquid A can flow in the washer liquid conduit 106.

At this time, the washer liquid A is supplied to the processing liquid supply amount adjusting device 107 via the branched pipe 122 of the washer liquid pipe 106. The washer fluid A is supplied to the chamber 108 outside the bellows 109,
Is pushed upward by the pressure of the washer liquid A.

On the other hand, the chamber 115 inside the bellows 109
Is supplied with the water-repellent liquid B from the treatment liquid tank 110 via the check valve 114. The water-repellent liquid B flowing into the chamber 115 inside the bellows 109 forms a flow in the direction of the outlet 117 when the bellows 109 is pushed upward in the figure, and the flow of the water-repellent liquid B flows through the check valve 119. The washer liquid A merges at the confluence 162 of the washer liquid conduit 106 through the provided treatment liquid conduit 118.

The amount of pressure drop between the branch point 161 and the confluence point 162 in the washer liquid pipeline 106 is determined by the flow rate of the washer liquid A. Since the flow rate of the water-repellent liquid B is smaller than that of the washer liquid A, the pressure of the water-repellent liquid B that has passed through the check valve 119 is lower than the pressure at the confluence 162 of the washer liquid conduit 106. high. Therefore, at the confluence point 162, the washer liquid A merges and the injection nozzle 10
The water-repellent mixed liquid is jetted from 5 toward the window.

The sprayed water-repellent mixture hits the window surface and is wiped off with a wiper, so that it is evenly applied to the window surface. Further, since the water-repellent liquid mixture droplets are also sprayed on the area which is not wiped by the wiper, the window surface is made water-repellent.

After that, the water repellency is reduced by wiping with a wiper or ultraviolet rays, but when the washer is used next time, the water repellency is again treated and the water repellency is restored. By repeating this, the driver can always maintain the window with high water repellency.

When the washer liquid tank 103 becomes empty, the internal pressure of the washer liquid pipe line 106 does not rise, and therefore the bellows 109 is not pushed upward. Therefore, the problem that only the water repellent liquid B is jetted does not occur.

As described above, in the window washer device of this embodiment, the tank 110 different from the washer liquid A is used.
Since the water-repellent liquid B is stored in the tank, and the water-repellent liquid B is mixed and jetted when the washer liquid A is jetted, there is a problem that the characteristics of the water-repellent liquid B are deteriorated due to overwater decomposition as in the conventional case. It never happens. In addition, the washer liquid A can be manufactured with less equipment without requiring a new pump and without requiring any manual labor.
The water-repellent liquid B can be automatically sprayed and applied simultaneously with the spraying.

Further, since the processing liquid supply amount adjusting device 107 uses the bellows 109 whose working liquid is the washer liquid A discharged from the washer liquid pump 102, the washer liquid A in the washer liquid tank 103 is empty. In this case, the pressure of the washer liquid A does not rise, and when the washer liquid A is not jetted, the water repellent liquid B is also not jetted.

[Embodiment 2] FIG. 2 is a block diagram of a window washer device according to Embodiment 2 of the present invention. The window washer device of this embodiment is provided with a piston 212 that moves together with the bellows 109 in addition to the configuration of the first embodiment (FIG. 1), and the function of adjusting the supply amount of the water repellent liquid B in the treatment liquid supply amount adjusting device 107 is further improved. It is something that is surely done.

Inside the bellows 109, the bellows 10
A piston 212 having a diameter smaller than the axial pressure receiving area 9 is fixed. When the bellows 109 is pushed upward by the pressure of the washer liquid A supplied to the chamber 108 on the outer side of the bellows 109, the upper end portion 213 of the piston 212 passes through the check valve 114 from the processing liquid tank 110 and passes through the check valve 114. The water repellent liquid B supplied to the chamber 115 is pushed up.

Therefore, in the window washer device of this embodiment, the pressure in the chamber 115 inside the bellows 109 can be made higher than the pressure in the chamber 108 outside the bellows 109, and the pipe line 106 for the washer liquid is formed. Confluence point 1
The merging of the water repellent liquid B at the position of 62 can be ensured.

[Third Embodiment] FIG. 3 is a block diagram of a window washer device according to a third embodiment of the present invention. The window washer device of this embodiment is an embodiment that saves the consumption of the water repellent liquid B. The window washer device of this embodiment has a throttle valve having a screw portion in addition to the configuration of the first embodiment (FIG. 1) (corresponding to throttle means in claims).
316 is provided and the outflow rate of the water repellent liquid B can be adjusted by manually rotating and adjusting the throttle valve 316.

For example, since the washer is frequently used in an environment where there are many opportunities to travel on a snowy road, the amount of the water repellent liquid B used becomes larger than necessary. In order to prevent such unnecessary use of the water-repellent liquid B, in the window washer device of this embodiment, the flow rate of the water-repellent liquid B extruded through the outlet 117 is suppressed by adjusting the throttle valve 316 to reduce the amount of the water-repellent liquid B once. The outflow rate of the water repellent liquid B due to the washer injection is adjusted to be small. As a result, it is possible to prevent the water repellent liquid B from being used more than necessary and save the consumption of the water repellent liquid B.

[Fourth Embodiment] FIG. 4 is a block diagram of a window washer device according to a fourth embodiment of the present invention. The window washer device of this embodiment is an embodiment that saves the consumption of the water repellent liquid B.

The window washer device of this embodiment is
In place of the throttle valve 316 of the third embodiment, a stopper (corresponding to a throttle means in claims) 420 is provided,
By manually rotating and adjusting the stopper 420, the position of the tip of the stopper 420 is changed and the outflow rate of the water-repellent liquid B is adjusted. Therefore, in the window washer device of this embodiment, the stopper 420
By adjusting the above, it is possible to prevent the water repellent liquid B from being used more than necessary and to save the consumption of the water repellent liquid B.

[Fifth Embodiment] FIG. 5 is a block diagram of a window washer device according to a fifth embodiment of the present invention. The window washer device of this embodiment is an embodiment that saves the consumption of the water repellent liquid B. The window washer device of this embodiment has a throttle valve having a screw portion in addition to the configuration of the second embodiment (FIG. 2) (corresponding to the throttle means in the claims).
The outflow rate of the water-repellent liquid B can be adjusted by providing 516 and manually adjusting the rotation of the throttle valve 516.

As described above, in order to prevent the water repellent liquid B from being used more than necessary in an environment such as running on a snowy road, the water repellent liquid B pushed out through the outlet 117 is adjusted by adjusting the throttle valve 516.
Reduce the flow rate of. In other words, in the window washer device of this embodiment, by adjusting the vertical movement distance of the piston 212 with the throttle valve 516, the outflow rate of the water repellent liquid B by one washer injection can be adjusted to be small.

[Sixth Embodiment] FIG. 6 is a block diagram of a window washer device according to a sixth embodiment of the present invention. The window washer device of this embodiment is an embodiment that saves the consumption of the water repellent liquid B. The window washer device of this embodiment has a stopper (corresponding to a throttle means in claims) 620 instead of the throttle valve 316 of the fifth embodiment.
Is provided, and the position of the tip of the stopper 620 is changed by manually adjusting the rotation of the stopper 620.
The outflow rate of is adjusted.

This corresponds to lowering the uppermost position of the piston 212 to the position of the tip of the stopper 620 in the chamber 115 inside the processing liquid supply amount adjusting device 107 of the second embodiment, and as a result, this embodiment In the window washer device, the upper limit of the total amount of the water-repellent liquid B sprayed at one time can be adjusted.

[Seventh Embodiment] FIG. 7 is a block diagram of a window washer device according to a seventh embodiment of the present invention. The window washer device of this embodiment is the same as that of the sixth embodiment except that an orifice 721 is added. Therefore, the chamber above the piston 212 (inner chamber 115) is divided into the chamber 715 and the chamber 715a by the orifice 721.

Regarding the specifications for mixing the water repellent liquid B with the washer liquid A at the specified dilution rate in the window washer device at the confluence 162 of the washer liquid conduit 106 using the window washer device of this configuration explain.

Confluence 162 of the washer fluid conduit 106
In the above, if there is a predetermined pressure difference between the water repellent liquid B and the washer liquid A, they will join at a predetermined mixing ratio. That is, the processing liquid conduit 118 through which the water repellent liquid B is flowing.
And the pressure in the washer liquid pipeline 106 through which the washer liquid A is flowing become a predetermined pressure difference.
It is necessary to design the system of the window washer device.

In the following description, as shown in FIG. 7, it is assumed that an orifice 721 is provided between the chamber 715 in which the water repellent liquid B is flowing and the processing liquid conduit 118. The installation location of 721 is not limited to this, and the confluence point 162 of the washer fluid conduit 106 from the chamber 715.
However, the check valve 119 in another embodiment may have an orifice function.

First, the diameter d of the orifice 721 and the pressure difference Δ before and after the orifice 721 for satisfying the dilution ratio specification.
Consider P. (A) Examination of the target flow rate of the water-repellent liquid B The target flow rate of the water-repellent liquid B is the target dilution ratio: HP ± α (α is the allowable amount of variation) Washer liquid flow rate: Q1 (Washer liquid Pump 10
Flow rate discharged from No. 2 and jetted from the jet nozzle 105 through the washer liquid pipeline 106) Repellent liquid flow rate: Q2 (from the treatment liquid tank 110 through the chamber 715 and the treatment liquid pipeline 118, a confluence point 162
(Flow rate that merges with), Q2 = Q1 / HP (1)

The washer liquid flow rate Q1 is considered to vary due to the following factors. Variations in characteristics of washer fluid pump 102 Variations in characteristics of injection nozzle 105 Piping (tube length, number of joints, tube curvature) Liquid type (tap water, washer belt) Temperature Battery voltage Variation over time When variations occur due to these factors Washer liquid flow rate Q
If the maximum flow rate of 1 is Q1max and the minimum flow rate is Q1min, Q2min = Q1max / (HP-α) Q2max = Q1min / (HP + α) (2)

(B) Target orifice 721 diameter d
And the pressure difference ΔP The relationship between the water repellent liquid flow rate Q2, the orifice diameter d, and the pressure difference ΔP is given by the following equation (3). Q2 = C · A · (2ΔP / ρ) 1/2 = C · (π · d 2/4) · (2ΔP / ρ) 1/2 ··· (3) where, C: orifice flow coefficient A: Orifice hole area [m ² ] ΔP: Pressure difference before and after the orifice 721 [Pa] ρ: Liquid density [Kg / m ² ] d: Orifice hole diameter [m]

Also, consider the Reynolds number Re of the processing liquid conduit 118. Re = v2 · D / ν = (Q2 / A) · D / ν = (Q2 / (π · D 2/4)) · D / ν = 4Q2 / (π · D · ν) ··· (4) Here, Re: Reynolds number v2: Flow velocity of water-repellent liquid B [m / s] ν: Dynamic viscosity coefficient of liquid [m ² / s] D: Inner diameter of tube 118 for treatment liquid [m]

In the equation (4), Q2 = 5.69 × 10 ^-7 [m
² / s], ν = 1 × 10 ⁻⁶ [m ² / s] (1 atm, 20
When the Reynolds number Re is calculated with D = 4 × 10 ⁻³ [m] in the case of [° C.] water), Re = 4 · Q2 / (π · D · ν) = 4 × 5.69 × 10 ⁻⁷ / (π × 4 × 10 ^-3 × 1 × 10 ^-6 ) ≈181 (<2320) Therefore, the flow of the water repellent liquid B is a laminar flow (because the water repellent liquid B has a larger kinematic viscosity coefficient ν than water). . As described above, since the flow in the processing liquid conduit 118 is a laminar flow, it may be considered that the orifice flow coefficient C≈1 in the equation (3).

[0055] (c) Study of the pressure difference [Delta] P required before and after the orifice 721 (3) ΔP = by transforming the equation (ρ / 2) · (Q2 / (π · d 2/4)) 2 = (ρ / 2) ・ (4Q2 / π ・ d ² ) ²・ ・ ・ (5)

Assuming the following, ρ = 950 [Kg / m ³ ] Q2 = 5.69 ± 0.98 × 10 ⁻⁷ [m ³ / s] d = 0.5 + (0.0 to 0.05) × 10 ⁻³ [M] It should be noted that the smaller the diameter d of the orifice 721, the easier it is to control the dilution ratio, and therefore the diameter d has been made as small as possible.
Further, if it is less than 0.5, there is a problem such as clogging in processing. Further, the maximum pressure difference ΔPmax and the minimum pressure difference ΔPmin of the pressure difference ΔP are as follows: ΔPmin = (ρ / 2) · (4 · Q2min / π · dmin ² ) ² = (950/2) · {4 × 4.71 × 10 ^{− 7} / π × (0.5 × 10 ⁻³ ) ² } ² = 2733.2 [Pa] ΔPmax = ρ / 2 · (4 · Q2max / π · dmax ² ) ² = (950/2) · {4 × 6.67 × 10 ^{− 7 /} π x (0.55 x 10 ^-3 ) ² } ² = 3743.8 [Pa]

Therefore, the pressure difference ΔP before and after the orifice 721
Must be controlled to ΔP≈2733 to 3744 [Pa] (= 0.027 to 0.037 [Kgf / cm ² ]). That is, 3239 ± 505
[Pa] is the goal.

(D) Examination of Relationship between Tube Length of Pipe Line and Pressure Loss First, since the pressure drop ΔP2 in the processing liquid pipe 118 is a laminar flow, (here, assuming a viscous fluid flow, . are) ΔP2 = 128ν · ρ · L · Q2 / π · D 4 ··· (6) where, L: length of the tube [m]

[0059] The pressure drop Delta] P1 of the wash fluid conduit 106, ΔP1 = λ · (L / D) · (ρ · v1 2/2) where, λ = 0.3164Re ^-0.25 (equation Burajiusu) Re = v · d / ν v1 = Q1 / S = Q1 / (π · d 2/4) = 4Q1 / π
^{· D 2 ∴ΔP1 = 0.3164 (4Q1} / π · d · ν) -0.25 × (L / D) · ρ (4Q1 / π · d 2) 2/2 ··· (7)

Here, when the respective pressure drops are calculated, the pressure drop ΔP2 in the processing liquid conduit 118 is ΔP2 = 128 × 1 × 10 ⁻⁶ × 950 × 5.69 × 10 ⁻⁷ / π · (4 × 10 ^-3 ) ⁴ · L = 86.03 L [Pa] If L = 1 [m], ΔP2 ≈86 [Pa] ≈8.6 × 10 ^-4 [Kgf / cm ² ] and can be almost ignored.

Further, the pressure drop ΔP1 in the washer liquid pipeline 106 is ΔP1 = 0.3164 (4 × 280 × 10 ⁻⁷ / π × 4 × 10 ⁻³ × 1 × 10 ⁻⁶ ) ^−0.25 × (4 × 10 ^-3 ) x (950/2) x (4 x 280 x 10 ^-7 / π x (4 x 10 ^-3 ) ² ) L = 1945.2L [Pa] If L = 1 [m], then ΔP1 ≈ 1945.2 [Pa] ≈ 1.95 × 10 ^-2 [Kgf / cm ² ] (= 0.0195 [Kgf / cm ² ])

As described above, even with the same pipeline length, a pressure difference of this amount is generated due to the flow rate flowing through the pipeline. Therefore,
By changing the length of the conduit according to the mixing ratio of the water repellent liquid B and the washer liquid A, it is possible to appropriately change the ratio of merging at the confluence 162.

Further, as shown in the configurations of the second to seventh embodiments, the bellows 109 is provided with the piston 212, and the throttle valve 316 and the throttle valve 316 are provided in the chamber 115 inside the bellows 109.
516, the chambers 115 inside the bellows 109 are provided with stoppers 420 and 620, and further the orifices 712 are provided, so that the pressure in the chamber 108 outside the bellows 109 and the chamber 115 inside the bellows 109 are increased.
Pressure in the chamber 715 or pressure in the chamber 715 and the chamber 71
It is possible to give different pressures at 5a.

[0064]

As described above, according to the window washer device according to the first aspect of the present invention, the first liquid such as the washer liquid is stored in the tank for the washer liquid, and the washer is controlled by turning on the switch means. The washer liquid tank discharges the washer liquid tank through the washer liquid pipe to the injection nozzle, while the processing liquid tank stores the processing liquid, such as a water-repellent liquid and a hydrophilic liquid, for processing. The liquid supply amount adjusting device operates based on the washer liquid discharged from the washer liquid pump, adjusts the amount of the processing liquid sent from the processing liquid tank, and mixes and sprays the processing liquid at the time of jetting the washer liquid. Therefore, unlike the conventional method, the characteristics of the treatment liquid are not deteriorated due to the decomposition of water and the treatment liquid is not required to be manually operated and a new pump is not required. In it is possible to provide a window washer apparatus that can simultaneously automatically spraying and applying the injection washer fluid.

Further, in the treatment liquid supply amount adjusting device, the washer liquid is introduced into the chamber outside the bellows through the branch line of the washer liquid pipe line, and the treatment liquid is introduced into the chamber inside the bellows. The washer liquid in the tank for the washer liquid was introduced because it was introduced from the tank and the processing liquid in the chamber inside the bellows was sent out of the processing liquid supply amount control device by the pressure of the washer liquid in the chamber outside the bellows. When the washer liquid becomes empty, the pressure of the washer liquid does not rise, and when the washer liquid is not jetted, the treatment liquid is not jetted, and a new pump is not required, so that the washing liquid can be washed with less equipment. It is possible to provide a window washer device capable of automatically spray-applying simultaneously with spraying of a liquid.

According to the window washer device of the second aspect, the processing liquid supply amount adjusting device is provided with the check valve in the adjusting device in the path of the processing liquid from the processing liquid tank to the chamber inside the bellows. Therefore, it is possible to provide the window washer device that can prevent the backflow of the processing liquid into the processing liquid tank.

According to the window washer device of the third aspect, the processing liquid supply amount adjusting device is provided with a piston having a processing liquid pressure receiving area smaller than the washer hydraulic pressure receiving area in the operation axis direction of the bellows. Since the piston is fixed to the bellows and moves in conjunction with the bellows, it is possible to provide a window washer device capable of more reliably adjusting the supply amount of the processing liquid in the processing liquid supply amount adjusting device.

Further, according to the window washer device of the fourth aspect, in the treatment liquid supply amount adjusting device, the amount of the treatment liquid squeezed before the treatment liquid pushed out from the bellows reaches the treatment liquid pipe line. Since the throttling means (throttle valve or stopper) for adjusting the processing is provided, it is possible to provide a window washer device which can prevent the use of the processing liquid more than necessary and save the consumption of the processing liquid by adjusting the throttling means. it can.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration of a window washer device according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a configuration of a window washer device according to a second embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a configuration of a window washer device according to a third embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a configuration of a window washer device according to a fourth embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a configuration of a window washer device according to a fifth embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a configuration of a window washer device according to a sixth embodiment of the present invention.

FIG. 7 is an explanatory diagram showing a configuration of a window washer device according to a seventh embodiment of the present invention.

[Explanation of symbols]

 A Washer liquid B Treatment liquid such as water repellent liquid and hydrophilic liquid 101 Washer switch (switch means) 102 Washer liquid pump 103 Washer liquid tank 105 Injection nozzle 106 Washer liquid conduit 107 Treatment liquid supply amount adjusting device 108 Bellows 109 Outer chamber 115 inner chamber of bellows 109 715, 715a chamber 109 bellows 110 processing liquid tank 111 spring 212 piston 213 upper end portion of piston 212 114 check valve (check valve in control device) 316, 516 throttle valve ( (Throttle means) 117 Outlet 118 Pipe for processing liquid 119 Check valve 420,620 Stopper (throttle means) 721 Orifice 122 Pipe for branched washer liquid pipe 161 Branch point 162 Confluence point

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiko Nagai 1760 Higashimatano-cho, Totsuka-ku, Yokohama, Kanagawa Prefecture

Claims (4)

[Claims] 1. A washer fluid tank for storing a washer fluid, a washer fluid pump for delivering a washer fluid from the washer fluid tank, a processing fluid tank for storing a processing fluid, and a processing fluid tank for delivering the processing fluid. Processing liquid supply amount adjusting device for adjusting the amount of the processing liquid to be supplied, an injection nozzle for injecting the washer liquid and / or the processing liquid, and a washer liquid pipe for guiding the washer liquid from the washer liquid pump to the injection nozzle. A passage, a treatment liquid conduit having a check valve in the middle of the conduit for guiding the treatment liquid from the treatment liquid supply amount adjusting device to the injection nozzle, and a switch means for controlling the operation of the washer liquid pump. The processing liquid supply amount adjusting device includes a bellows using the washer liquid discharged from the washer liquid pump as a working liquid, The washer liquid is introduced into the outer chamber of the bellows through a branch of the washer liquid pipe, and the treatment liquid is introduced into the inner chamber of the bellows from the treatment liquid tank. A window washer device, wherein the processing liquid in the chamber inside the bellows is sent to the outside of the processing liquid supply amount adjusting device by the pressure of the washer liquid in the outside chamber. 2. The processing liquid supply amount adjusting device has an internal check valve in the adjusting device in a path of the processing liquid from the processing liquid tank to an inner chamber of the bellows. Window washer device. 3. A piston having a processing liquid pressure receiving area smaller than a washer hydraulic pressure receiving area in the operation axis direction of the bellows, wherein the processing liquid supply amount adjusting device is fixed to the bellows and moves in conjunction with the bellows. The window washer device according to claim 1 or 2, further comprising: 4. The treatment liquid supply amount adjusting device has a throttle means for adjusting the throttle amount of the treatment liquid while the treatment liquid extruded from the bellows reaches the treatment liquid pipe line. The window washer device according to claim 1, 2, or 3.