JPH0471950A - Two-liquid type washer device - Google Patents

Abstract

PURPOSE:To allow selective washing with simple construction between mode for jetting a mixture of a washing liquid contained in one tank and another liquid in the other tank, and another mode for jetting only the liquid in the other tank by providing a double outlet pump. CONSTITUTION:When the impeller 28 of a double outlet pump 26 is rotated in a normal direction and a washing liquid B in a tank 14 is fed to the nozzle 22 of a jet pump 16 via a pipe 52, the internal pressure of a mixing chamber 18 becomes low, with the liquid B jetted from the nozzle 22 to the mixing chamber 18 at high speed. As a result, another washing liquid in a tank 12 is sucked through a column pipe 20, thereby being mixed with the liquid B. This mixed washing liquid is jetted through a jet nozzle 78 via a fourway valve 56 and pipes 70 and 72. On the other hand, when the impeller 28 of the double outlet pump 26 is rotated in a reverse direction, only the washing liquid B in the tank 14 is fed to the jet nozzle 78 and jetted via a pipe 54 and the four- way valve 56.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a washer device for cleaning vehicle windshields, etc., and in particular, the present invention relates to a washer device for cleaning a vehicle windshield, etc. The present invention relates to a two-liquid washer device that performs switching injection.

[Prior Art] A two-liquid washer device for cleaning vehicle windshields, etc. is equipped with two mutually independent tanks, and each tank contains a cleaning liquid (for example, one tank contains a cleaning liquid). water, and the other tank contains a powerful cleaning solution for removing oil films etc. that adhere to the glass surface. In addition, each tank is equipped with an electric pump, which feeds the cleaning liquid contained in the tank and injects it from the nozzle (for example, Japanese Patent Laid-Open No. 591840
Publication No. 45). , Such a two-component washer system has the advantage of securing the necessary volume of cleaning fluid and increasing the flexibility in choosing the location of each tank, but on the other hand, each tank requires its own electric pump. Since it is attached, the cost is relatively high, and the electrical control device for driving the electric pump is complicated.

Therefore, in order to eliminate these drawbacks, a two-component washer device using a jet pump that does not require an electrical control device has been proposed (Utility Model Application No. 63-4).
Publication No. 770).

In this type of two-liquid washer device, when the electric pump attached to one tank is operated, the cleaning liquid in one tank is supplied to the jet pump, and the cleaning liquid in the other tank is then supplied to the jet pump. The water is pumped up, mixed with the cleaning liquid in one tank, and sprayed from a nozzle. Therefore, it is not necessary to provide a plurality of expensive electric pumps, a complicated electric control device is not required, and the structure is simplified.

“Problems to be Solved by the Invention” However, in the two-liquid washer device described above, although the cleaning liquid can be fed and sprayed from the nozzle with a simple structure, the cleaning liquid stored in one tank and the other The cleaning liquid stored in the tank can only be injected in a mixed state.In other words, in order to operate the jet pump to pump up the cleaning liquid, it is necessary to operate the electric pump at all times. One cleaning liquid supplied by the electric pump and the other cleaning liquid pumped up by the jet pump are always mixed and sprayed.For this reason, only one cleaning liquid is supplied separately and independently by the electric pump. I was unable to get it to spray from the nozzle.

In consideration of the above facts, the present invention has two modes: one in which the cleaning liquid contained in one tank and the cleaning liquid contained in the other tank are mixed and injected, and the other in which only the cleaning liquid contained in the other tank is injected. The object of the present invention is to obtain a two-component washer device that can selectively perform the following operations with a simple structure.

[Means for Solving the Problems] A two-liquid washer device according to the present invention is a two-liquid washer device in which cleaning liquid stored in two mutually independent tanks is fed by a pump and sprayed from a nozzle. a nozzle unit that is attached to one of the two tanks and that spouts the supplied cleaning liquid;
a pumping part that pumps up the cleaning liquid contained in the one tank by a jet stream from the nozzle part; and a venturi part that mixes the cleaning liquid spouted from the nozzle part and the cleaning liquid pumped from the pumping part and supplies the mixture to the nozzle. a jet pump that is attached to the other of the two tanks and communicated with the nozzle portion of the jet pump to direct the cleaning liquid contained in the other tank to the nozzle portion of the jet pump; a double outlet pump that selectively discharges to a first discharge port that supplies the cleaning liquid and a second discharge port that directly communicates with the nozzle and supplies the cleaning liquid stored in the other tank to the nozzle; It is characterized by having the following.

[Operation] In the two-liquid washer device configured as described above, when the double outlet pump operates and the cleaning liquid stored in the other tank is discharged from the first outlet, the cleaning liquid in the other tank is discharged from the jet pump. The jet pump is activated by being fed to the nozzle.

When the cleaning liquid from the other tank is spouted from the nozzle part, the cleaning liquid stored in one tank is pumped up by the jet stream, mixed with the cleaning liquid from the other tank, and is sent to the nozzle via the venturi part, and from the nozzle. Injected.

On the other hand, when the double outlet pump operates and the cleaning liquid stored in the other tank is discharged from the second outlet, the cleaning liquid in the other tank is directly fed to the nozzle,
As a result, only the cleaning liquid contained in the other tank is injected from the nozzle.

In this way, by switching between the state in which the cleaning liquid is discharged from the first discharge port of the double outlet pump and the state in which the cleaning liquid is discharged from the second discharge port, the cleaning liquid contained in one tank and the state in which the cleaning liquid is discharged from the other tank can be changed. It is possible to selectively perform an aspect in which the cleaning liquid contained in the tank is mixed with the cleaning liquid and injected, and an aspect in which only the cleaning liquid contained in the other tank is injected, and the structure is simplified.

[Example] FIG. 1 shows an overall configuration diagram of a two-component washer device 10 according to the present invention.

The two-component washer device 10 includes a tank 12 and a tank 1.
It is equipped with 4. The tank 12 contains a cleaning liquid A (for example, a strong cleaning liquid for removing oil film and the like adhering to a glass surface). A jet pump 16 is attached to the upper opening of the tank 12.

As shown in detail in FIG. 2, the jet pump 16 has a mixing chamber 18 formed in the center thereof.
It has a pumping pipe 20 as a pumping section that communicates with the pump.

The lift pipe 20 is suspended within the tank 12, and its tip is located near the bottom of the tank 12. Further, a nozzle 22 is connected to the mixing chamber 18, and a high-pressure fluid (so-called driving fluid: in this embodiment, cleaning liquid B in the tank 14, which will be described in detail later) is fed into the mixing chamber 18 at high speed. It is ready to squirt.

Further, a venturi 24 is formed in the mixing chamber 18 in communication with the nozzle 22 , and the high-speed fluid jetted into the mixing chamber 18 from the nozzle 22 is discharged to the venturi 24 . At this time, the high-speed fluid ejected into the mixing chamber 18 from the nozzle 22 causes the inside of the mixing chamber 18 to become a low-pressure region, so that the cleaning liquid A in the tank 12 is sucked through the water pump 20 and inside the mixing chamber 18. After being mixed with the fluid (cleaning liquid) ejected from the nozzle 22, the velocity energy flows into the venturi 24 while being converted into pressure energy.

The venturi 24 is connected via a pipe 58 to a four-way valve 56, which will be described in detail later.

On the other hand, the tank 14 contains cleaning liquid B (for example, water). Further, a double outlet pump 26 is attached to the bottom of the tank 14.

The double outlet pump 26 is a so-called centrifugal pump in which an impeller 28 is connected to a rotor 32 of an electric part 30, as shown in detail in FIG. 3, and as schematically shown in FIG. The guide path 34 and the guide path 36 are connected.

The impeller 28 also communicates with the inside of the tank 14 through an inlet 38. Therefore, when the impeller 28 rotates in the forward direction, the cleaning liquid B in the tank 14 is transferred to the suction port 38.
can be inhaled and flowed out to the guide path 34, while
By rotating the impeller 28 in the opposite direction, the tank 1
The cleaning liquid B in the cleaning liquid B can be sucked in through the suction port 38 and can flow out into the guide path 36.

Each guideway 34 , 36 is connected to a switching valve 40 . As schematically shown in FIG. 4, the central portion of the switching valve 40 is a valve chamber 42, and the aforementioned guide passage 34 and guide passage 36 are communicated with each other in the valve chamber 42, facing each other. There is. Further, a discharge port 44 as a first discharge port is communicated with the valve chamber 42 near the guide path 34, and a discharge port 44 as a second discharge port is communicated with the valve chamber 42 near the guide path 36. 46 are in communication.

A valve body 48 is arranged within the valve chamber 42 . The valve body 48 is arranged so as to be movable within the valve chamber 42 between a state in which the guide path 34 and the discharge port 44 are closed, and a state in which the guide path 36 and the discharge port 46 are closed. That is, when the valve body 48 is in contact with the inner wall of one side (upper side in FIG. 4) of the valve chamber 42, the guide path 36 and the discharge port 46 are closed by the valve body 48, and the guide path 34 and the discharge port 44 are closed. are in a state where they are substantially communicated via the valve chamber 42 (the state shown in FIG. 4). On the other hand, when the valve body 48 is in contact with the inner wall of the other valve chamber 42 (lower side in FIG. 4), contrary to the above, the guide passage 36 and the discharge port 46 are substantially in communication via the valve chamber 42. The guide path 34 and the discharge port 44 are in a state where the valve body 4 is closed.
8, it becomes a blockage state. That is, the double outlet pump 26 can discharge the cleaning liquid B in the tank 14 independently from the discharge port 44 or the discharge port 46 of the switching valve 40.

A compression spring 50 is disposed between the valve body 48 and the other inner wall of the valve chamber 42 (lower side in FIG. 4), and the valve body 4 is always
8 in the direction of the guide path 36 and the discharge port 46 (in the direction of the inner wall of one of the valve chambers 42 (upper side in FIG. 4)). Therefore, normally, the valve body 48 comes into contact with one inner wall of the valve chamber 42 to close the guide path 36 and the discharge port 46, and also closes the guide path 36 and the discharge port 46.
4 and the discharge port 44 are in communication (as shown in FIG. 5).

The discharge port 44 of the double outlet pump 26 is connected to the nozzle 22 of the jet pump 16 described above via a pipe 52, so that the cleaning liquid B discharged from the discharge port 44 is supplied to the nozzle 22. It has become.

On the other hand, the discharge port 46 is connected to a four-way valve 56 via a pipe 54. Therefore, the cleaning liquid B discharged from the discharge port 46 is directly supplied to the four-way valve 56 via the pipe 54.

As shown in FIG. 5, the central part of the four-way valve 56 is a valve chamber 60, and the valve chamber 60 further includes an inlet passage 64 to which the pipes 54 and 58 described above are connected, and an inlet passage 64 connected to the pipes 54 and 58.
2 is formed. Further, the valve chamber 60 includes an outflow passage 66,
An outflow path 68 is formed, and a pipe 70 and a pipe 72 are connected to each other.

A valve body 74 is arranged within the valve chamber 60 . The valve body 74 is arranged to be movable within the valve chamber 60 between a state in which the inflow passage 62 is closed and the inflow passage 64 is opened, and a state in which the inflow passage 62 is opened and the inflow passage 64 is closed. That is, when the valve body 74 is in contact with the inner wall of one side (upper side in FIG. 5) of the valve chamber 60, the inflow passage 62 is closed by the valve body 74, and the inflow passage 64 and the outflow passage 66, 68 are closed. They are in a state where they are substantially communicated via the chamber 60 (the state shown in FIG. 5).

On the other hand, when the valve body 74 is in contact with the inner wall of the other side of the valve chamber 60 (lower side in FIG. 5), contrary to the above, the inflow passage 62 and the outflow v466. The communication state is established, and the inflow path 64 is closed by the valve body 74.

A compression spring 76 is disposed between the valve body 74 and the other inner wall of the valve chamber 60 (lower side in FIG. 5), so that the valve body 74 is always
4 in the direction of the inflow passage 62 (one side of the valve chamber 60 (upper part in Fig. 5)
(inner wall direction). For this reason, normally the valve body 7
4 is in contact with one inner wall of the valve chamber 60 to close the inflow passage 62 and open the inflow passage 64 (the fifth
state shown).

The other ends of the pipes 70.72 connected to the outflow passages 66.68 of the 4-way valve 56 are connected to injection nozzles 78, respectively, and spray the cleaning liquids A and B after being supplied to the 4-way valve 56. It can be fed to the nozzle 78.

Next, the operation of this embodiment will be explained.

In the two-component water bathing device IO having the above configuration, cleaning liquid A and cleaning liquid B (powerful cleaning liquid and water) are mixed and sprayed, and cleaning liquid B (water) alone is sprayed selectively. I can do it.

That is, when the impeller 28 of the double outlet pump 26 is rotated in the forward direction, the cleaning liquid B in the tank 14 is sucked in from the suction port 38 and discharged from the discharge port 44, and the cleaning liquid B flows through the pipe 52 to the jet pump 16. is fed to the nozzle 22 of. Therefore, the cleaning liquid B is jetted from the nozzle 22 into the mixing chamber 18 at high speed, and at this time, the inside of the mixing chamber 18 becomes a low pressure region due to the high-speed cleaning liquid B jetted from the nozzle 22 into the mixing chamber 18. The cleaning liquid A in the tank 12 is sucked through the pumping pipe 20, mixed with the cleaning liquid B jetted from the nozzle 22 in the mixing chamber 18, and then flows out into the venturi 24 while the velocity energy is converted into pressure energy. Ru.

The mixed cleaning liquid that has flowed into the venturi 24 is transferred to the pipe 58.
is fed to the four-way valve 56 via the 4-way valve 56. Here, 4
In the way valve 56, the inflow path 62 is closed by the valve body 74, but when the mixed cleaning liquid is supplied, the valve body 74 is moved against the biasing force of the compression spring 76, and the inflow path 62 is opened. The inlet passage 62 is brought into communication with the outlet passages 66, 68 via the valve chamber 60, and the inlet passage 64 is closed. Therefore, the mixed cleaning liquid fed from the pipe 58 does not flow out into the inflow path 64, but flows out into the outflow path 66, 68 through the valve chamber 60.

Furthermore, the mixed cleaning liquid after flowing out into the outlet channels 66, 68 is fed to the injection nozzle 78 via the pipe 70, 72 and is injected.

On the other hand, the impeller 28 of the double outlet pump 26
By rotating in the opposite direction, the cleaning liquid B in the tank 14 is sucked in from the suction port 38 and discharged from the discharge port 46, and the cleaning liquid B is directly supplied to the four-way valve 56 via the pipe 54.

Here, the four-way valve 56 normally has a compression spring 7
6 biases the valve body 74 to close the inflow path 62 and open the inflow path 64, the supplied cleaning liquid B does not flow out into the inflow path 62 but passes through the valve chamber 60. Outflow into outlet channels 66,68.

Furthermore, the cleaning liquid B after flowing out to the outflow path 66.68 is
Pipe 70? 2 to the injection nozzle 78 for injection.

In this way, the discharge port 4 of the double outlet pump 26
By switching between a state in which the cleaning liquid B is discharged from the discharge port 4 and a state in which the cleaning liquid B is discharged from the discharge port 46, the cleaning liquid A contained in the tank 12 and the cleaning liquid B contained in the tank 14 are mixed and sprayed. A mode in which only the cleaning liquid B contained in the tank 14 is injected can be selectively performed. Further, there is no need to provide a plurality of expensive electric pumps, and furthermore, there is no need for a complicated electrical control device for driving the electric pumps, resulting in a simple structure.

Further, in the above embodiment, the inflow path 6 of the four-way valve 56 connected to the tank 12 side storing the powerful cleaning liquid A
2 is normally closed at the valve body 74 by the compression spring 76, so after spraying the cleaning liquid B (water), the pipe 7
This prevents the residual liquid remaining at 0.72 mm from flowing backward through the pipe 58 into the tank 12 storing the strong cleaning liquid A, thereby preventing the strong cleaning liquid A from being diluted.

Furthermore, although the tank 12 and tank 14 are separate bodies in the above embodiment, the present invention is not limited to this, and one tank may be partitioned into two storage areas.

Furthermore, in the above embodiment, the strong cleaning liquid A was stored in the tank 12 and the cleaning liquid B (water) was stored in the tank 14.
The cleaning liquids stored in these 12 and 14 do not necessarily have to be different, and may be the same cleaning liquid.

This allows the tanks to be distributed and arranged within the limited space of the engine compartment of the vehicle, which solves the problem of not being able to increase the tank capacity due to space constraints.

In this embodiment, the double outlet pump 26 is configured as a centrifugal pump in which an impeller 28 is connected to a rotor 32, and the jet pump 16 is configured such that the pumping pipe 20, nozzle 22, and venturi 24 are substantially perpendicular to each other. However, the configurations of the double outlet pump 26 and the jet pump 16 are not limited to this, and it goes without saying that other types and configurations may be used.

[Effects of the Invention] As described above, the two-component washer device according to the present invention has two modes: a mode in which the cleaning liquid contained in one tank and a cleaning liquid contained in the other tank are mixed and sprayed; This has the effect of selectively spraying only the cleaning liquid contained in the tank with a simple structure.

[Brief explanation of drawings]

Fig. 1 is an overall configuration diagram of a two-component washer device according to the present invention, Fig. 2 is a sectional view of a jet pump, Fig. 3 is a sectional view of a double outlet pump, and Fig. 4 is an impeller and switching of the double outlet pump. FIG. 5 is a sectional view of the 4-way valve, and FIG. 6 is a schematic diagram showing the piping state of the double outlet pump, jet pump, and 4-way valve. DESCRIPTION OF SYMBOLS 10... Two liquid washer device, 12... Tank (one tank), 14... Tank (other tank), 16... Jet pump, 20... Lifting pipe, 22... Nozzle, 24... Venturi, 26... Double outlet pump, 28... Impeller 38... Suction port, 40... Switching valve, 44... Discharge port (first discharge port), 46 ...Discharge port (second discharge port), 52.54.58.70.72...Pipe, 78...
・Injection nozzle.

Claims (1)

[Claims] (1) A two-component washer device in which cleaning liquid contained in two mutually independent tanks is supplied by a pump and sprayed from a nozzle, and the washing liquid is attached to one of the two tanks. , a nozzle part for spouting the supplied cleaning liquid; a pumping part for pumping up the cleaning liquid contained in the one tank by a jet stream from the nozzle part; a jet pump equipped with a bench lily unit that mixes the cleaning liquid and supplies it to the nozzle; and a jet pump that is attached to the other tank of the two tanks and is connected to the nozzle unit of the jet pump and is connected to the other tank. a first discharge port that supplies the cleaning liquid contained in the tank to the nozzle portion of the jet pump, and a second discharge port that directly communicates with the nozzle and supplies the cleaning liquid contained in the other tank to the nozzle. A two-component washer device characterized by comprising: a double outlet pump that selectively discharges water;