JP2008114211A - Fluid ejection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluid ejection device capable of ejecting cleaning liquid atomized into minute droplets of relatively uniform particle diameters by the strong force of liquid and gas being spread and ejected therefrom even if negative pressure generated by the force of pressurized gas being ejected is utilized for the ejection. <P>SOLUTION: The fluid ejection device is comprised of a gas ejection pipe 7 fabricated from a flexible tube communicating with a supply source 2 of pressurized gas via a pipeline with the base end of the ejection pipe 7 fixed to the rear end of an outer pipe 6 and the tip end of the ejection pipe 7 constituting a free end, which ejection pipe 7 is gyrated along the inner face of the outwardly expanding trumpet-shaped outer pipe 6 by the pressurized gas being ejected therefrom, and a liquid ejection nozzle member 10 communicating with a liquid supply source 3 via a pipeline 11 and attached to the wall face of the outer pipe 6 in the vicinity of its rear end, which nozzle member 10 ejects liquid from the tip in the direction of the open end of the outer pipe 6 by virtue of the negative pressure generated behind the space wherein the gas ejection pipe 7 is gyrated or by virtue of the pressure of water such as city water and the negative pressure as well. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an ejection device for ejecting gas and liquid necessary for cleaning and coating mainly while diffusing them in a certain region at the same time.

Conventional technology

  A general fluid ejection device used in a cleaning or cleaning device first removes dust or dirt from the cleaning portion with compressed air, and then ejects water or cleaning liquid from the ejection nozzle at a high pressure so that the portion to be cleaned is cleaned. Wash off dirt. In the case of cleaning, for example, the pressure of tap water is insufficient, so compressed air is sent to a supply source such as water or a detergent, and pressurized and supplied to the ejection nozzle. Therefore, a powerful compressed air supply source is also required for supplying liquid, and the liquid supply source such as water and detergent becomes large, and the entire apparatus becomes large.

For this reason, the applicant previously proposed a compact fluid ejection device that ejects cleaning liquid together with pressurized cleaning air without pressurizing (see Patent Document 1).
As shown in FIG. 2, this apparatus has a double-structured jet pipe C composed of an outer nozzle A and an inner nozzle B formed of a flexible tube material and a trumpet-shaped guide member G surrounding it. Have. The ejection pipe C has a proximal end fixed and a distal end a free end. Pressurized air is fed into the flow path D formed between the outer nozzle A and the inner nozzle B by a compressor. When the pressurized air is ejected vigorously from the tip of the flow path D, at least the front part of the ejection pipe C including the outer nozzle A and the inner nozzle B jumps at random and is restricted by the guide member G so as to rotate. do. The proximal end of the inner nozzle B is communicated with a cleaning liquid supply source E via a pipe F. Negative pressure is generated at the center of the tip of the ejection pipe by the pressurized air ejected from the flow path. The cleaning liquid is discharged from the tip of the jet pipe while being rotationally diffused in a mixed state with the jet air without requiring a pressurizing source by the suction force acting on the tip of the inner nozzle.

  JP 2003-154294 A

In the apparatus described in Patent Document 1, the gas and liquid discharged from the tip of the ejection pipe are vibrated by the swiveling motion of the ejection pipe C, and the mixed fluid is struck against the portion to be cleaned or the portion to be cleaned. Erupted. However, since the ejection pipe C has a double structure of the inner nozzle B and the outer nozzle A, the whole becomes heavy, and the swirling speed higher than expected cannot be obtained. For this reason, it became clear that the jet power of the mixed fluid was not as expected.
Further, the apparatus uses only the negative pressure acting on the center of the tip of the ejection pipe C as the pressurized air is ejected, and sucks and ejects the cleaning liquid from the liquid supply source. However, since the negative pressure acts on the small opening end of the inner nozzle B, the cleaning liquid itself cannot be ejected strongly.
Furthermore, although the liquid to be ejected is diffused and atomized, not only the diameter of the water droplets is relatively large but also there is a variation, and there is a drawback that it is difficult to spray the cleaning liquid to narrow or fine places.
For this reason, in the invention described in Patent Document 1, although there is no power in the jet output and rough cleaning and washing can be performed, it takes time to clean or wash fine portions and persistent dirt.

  An object of the present invention is to provide a fluid that can eject a nebulized cleaning liquid having a relatively uniform and small particle size while using a negative pressure associated with a jet output of a pressurized gas and a strong diffusion jet output of liquid and gas. The object is to provide an ejection device.

In order to solve the above problems, the present invention has the following configuration.
That is, the apparatus of the present invention according to claim 1 surrounds the gas ejection pipe formed of a flexible pipe material and the gas ejection pipe in the entire length direction, and has a front-expanding trumpet shape. An outer cylinder that is formed, and a nozzle member that is attached to a wall surface near the rear end of the outer cylinder and that ejects liquid toward the front open end in the outer cylinder.
The gas ejection pipe has a proximal end fixed to the rear end portion of the outer cylinder via an attachment member and the like, and communicated with a pressurized gas supply source via a pipe line, while a distal end of the outer cylinder is expanded. It is located in the vicinity of the open end to form a free end, and at least the front portion of the ejection pipe makes a swiveling motion when pressurized gas is ejected from the tip.
The nozzle member communicates with the liquid supply source via a pipe line, and causes the liquid to be ejected from the open end of the outer cylinder through the swirl region from behind the swirl region of the ejection pipe.

This fluid ejection device may be one in which an annular brush is detachably attached along the open end surface of the outer cylinder.
The gas ejection pipe and the outer cylinder are detachably attached to the tip of a gun-type air ejection device. The gas ejected from the gas ejection pipe is turned on and off by a gun trigger.

The liquid supply source is preferably a water supply directly connected to a faucet or the like, but may be a storage container that stores liquid in a pressurized state.
In the case of water supply, the nozzle member ejects liquid by the negative pressure generated behind the swirl region with the swirl movement of the gas ejection pipe and the water pressure of the tap water.
In the case of the pressurized storage container, it is desirable that the pressure storage container is detachably attached to a gun-type air ejection device.
In the present invention, the liquid supply source does not necessarily need to be a pressurized liquid, but is not only a negative pressure generated behind the swirling region of the gas ejection pipe, but is further increased by being slightly pressurized. It becomes possible to eject the mixed fluid effectively.
The nozzle member may be a plurality of nozzles that eject different liquids or the same liquid to different positions on the rear end portion of the outer cylinder.
It is desirable to provide an open / close valve in the middle of the liquid supply line of the nozzle member.
As the liquid ejected from the nozzle member, it is possible to use a detergent or a solution containing an abrasive that can be detachably attached to the main body of the apparatus or filled in an independent storage container.

  The gas ejection pipe may be formed of a flexible tube material made of, for example, synthetic resin, and a balancer that assists the swiveling motion of the gas ejection pipe may be attached to the outer periphery thereof. For example, a plurality of balancers are attached with a ring material made of synthetic rubber, for example, at intervals in the length direction of the gas ejection pipe.

The outer cylinder has a front-expanding trumpet shape and does not ask any other configuration as long as the nozzle member can be attached to the rear end.
As the pressurized gas, air pressurized by a compressor, air from an aerosol-type compressed air supply source, or other gas is used.

According to the present invention, the jet pipe that swirls along the inner surface of the outer cylinder that forms a front-expanding trumpet shape is formed by only one gas jet pipe. It becomes lighter and can turn at a higher speed when gas is ejected.
Further, according to the present invention, the gas ejection pipe can generate a large negative pressure behind the swivel region by performing a high-speed swivel movement, and this negative pressure is further applied to the narrow rear end of the outer cylinder. Since it acts intensively, the liquid can be ejected vigorously from the nozzle member for liquid ejection attached to the rear end portion of the outer cylinder.
Further, according to the present invention, the liquid ejected with the swirling of the ejecting pipe is diffused as it goes forward in the outer cylinder due to the negative pressure in the swirling region, and is also sheared by the swirling flexible ejecting pipe. Therefore, it can dissipate outside with the air flow from the open end of the outer cylinder in a miniaturized state.

  According to the second aspect of the present invention, the brush provided at the tip of the outer cylinder moves so as to vibrate finely under the vibration of the outer cylinder accompanying the turning of the ejection pipe. The hair slides to remove the dirt on the surface to be cleaned and to make it stand up.

  According to the invention described in claim 3, since the gas ejection pipe and the like are attached to the gun-type air ejection device, a compact and easy-to-operate device can be provided.

  According to the fourth aspect of the present invention, not only the negative pressure generated behind the swirl region with the swirling motion of the gas ejection pipe but also the water pressure of tap water is applied, so that the liquid can be ejected more powerfully than the nozzle member. it can. Moreover, since it is not necessary to pressurize tap water anew, it is not necessary to attach a separate pressurizing device as in the prior art prior to Patent Document 1.

According to the invention described in claim 5, the type of the liquid can be easily changed, and there are a plurality of hoses and pipes around the device, so that the device is compact and excellent in operability. Can provide.
In addition, by allowing the liquid in the storage container to be pressurized and ejected at a required pressure, the liquid can be ejected vigorously from the nozzle member by negative pressure and pressure as with tap water. Can do.

  According to the sixth aspect of the present invention, since the plurality of nozzle members are provided, the same or different types of liquid can be ejected in a large amount from the tip of the outer cylinder.

  According to the seventh aspect of the present invention, since the opening / closing valve is provided in the middle of the liquid supply pipe, the liquid can be ejected at a desired time.

  According to invention of Claim 8, an inertial force can be provided to the turning motion of a gas ejection pipe by a balancer, and the stable turning motion can be performed.

  According to the ninth aspect of the invention, it is possible to obtain a gas jet pipe that is relatively economical and durable.

  According to the invention of claim 10, strong pressure air can be ejected from the ejection pipe.

  According to the eleventh aspect of the present invention, a portable and compact device can be provided.

  According to invention of Claim 12, it can be used as a jetting apparatus for cleaning or washing.

Hereinafter, an embodiment when the present invention is applied to a cleaning apparatus will be described in detail with reference to the drawings.
FIG. 1 is a schematic explanatory diagram of a fluid ejection device according to an embodiment of the present invention. The fluid ejection device includes a fluid ejection gun 1, a pressurized air supply source 2, and a cleaning liquid supply source 3.
The fluid ejection gun 1 is configured such that an ejection mechanism section 5 is detachably attached to a barrel end of a gun body 1a via a connecting body 4. By operating a trigger, the gun body 1a is supplied with pressurized air from a pressurized air supply source 2 such as an air compressor via an air hose, and injects pressurized air from the tip of the barrel. Pressurized air is supplied while the trigger is pulled, and air supply from the air hose is cut off by releasing the trigger.
The coupling body 4 has a passage 4a for pressurized air injected from the gun body 1a.

The ejection mechanism section 5 is configured by attaching an ejection pipe 7 inside the outer cylinder 6.
The outer cylinder 6 is formed of a rigid synthetic resin material, and the rear half 6a has a cylindrical shape, and the front half 6b has a trumpet shape that expands toward the tip.
The ejection pipe 7 is formed of a small diameter tube material made of a synthetic resin having flexibility such as nylon, Teflon (registered trademark), polyurethane, polypropylene, and the like, and a base end portion is fixed in a rear end portion of the outer cylinder 6. It is fixed to the attachment portion 8 and the front end portion is a free end. A base end portion of the ejection pipe 7 fixed to the attachment portion 8 communicates with the passage 4 a of the connecting body 4. When the pressurized air that has flowed through the passage 4a is ejected from the tip of the ejection pipe 7, it causes the ejection pipe 7 formed of a flexible material to jump. The movement of the front portion of the ejection pipe 7 is restricted by the trumpet-shaped inner surface of the outer cylinder front portion 6 b and performs a turning motion along the inner surface of the outer cylinder 6.

  A plurality of synthetic resin balancers 9 are attached to the outer periphery of the ejection pipe 7 at intervals in the length direction. The balancer 9 applies an inertial force to the above-described swirling motion of the ejection pipe so that the swirling is performed efficiently.

A cleaning liquid spray nozzle 10 is attached to the cylindrical rear half 6 a of the outer cylinder 6. The injection nozzle 10 has an injection port 10 a at its tip in the outer cylinder and opens toward the expanded end of the outer cylinder 6. The base portion 10b of the injection nozzle 10 has a connection end of a connection pipe 11 that is on the outer surface of the outer cylinder 6 and communicates with the cleaning liquid supply source 3, and is provided with an operation member 10c that opens and closes the passage of the cleaning liquid. .
Further, an annular brush 12 in which bristles are planted along the axial direction of the outer cylinder is attached to the front end surface of the outer cylinder 6 that is opened in a trumpet shape.

In the figure, a cleaning liquid supply source 3 (31) indicated by a solid line is a general water supply 31 supplied to a home or the like. A water tap and a connection end provided on the base portion 10b of the injection nozzle 10 are connected by a connection pipe 11a.
As shown by a two-dot chain line in the figure, the cleaning liquid supply source 3 may be a storage container 32 that is detachably attached to the vicinity of the coupling body 4 by a screw type or fitting type technique.
The cleaning liquid storage container 3 stores the cleaning liquid in a slightly pressurized state. The cleaning liquid may be water, but usually a detergent or a solution containing an abrasive is used.
The cleaning liquid storage container 3 is connected to the connection end of the injection nozzle base 10b through the connection pipe 11b.

The usage state of this apparatus will be described.
First, when only pressurized air is ejected, the compressor 2 which is a supply source of pressurized air is driven, and the trigger of the gun body 1a is pulled. Pressurized air flows from the compressor 2 through the air hose and the gun body, flows into the ejection pipe 7 through the passage 4 a of the connecting body 4, and is ejected vigorously from the tip of the ejection pipe 7. The ejection pipe 7 is formed of a flexible tube material and has a free end at its tip, so that the free end jumps and jumps, but is regulated by the inner surface of the outer cylinder 6 and regularly swivels. Do exercise. This swirling motion is a high-speed swirling motion because the ejection pipe 7 is formed of only a single pipe material and is much lighter than in the prior art. Further, the balancer 9 attached to the outer periphery of the ejection pipe 7 stabilizes the turning motion.

The air ejected from the tip of the ejection pipe 7 is accelerated by the swiveling motion of the ejection pipe 7 to become a diffused air flow that strikes the surface to be cleaned, and blows away dirt on the surface to be cleaned.
Further, when the ejection pipe 7 hits the inner surface of the outer cylinder and performs a turning motion, a delicate vibration is generated in the outer cylinder 6. This vibration is transmitted to the brush 12 provided at the tip of the outer cylinder. Accordingly, by bringing the brush hair into contact with the surface to be cleaned, the surface to be cleaned is automatically rubbed against the hair of the brush, and the dirt stuck to the surface to be cleaned is peeled off. The peeled dirt is removed from the surface to be cleaned by the air flow.

  Next, when jetting using pressurized air and cleaning liquid in combination with this apparatus, the water pipe 31 and the nozzle base 10b are connected by the connecting pipe 11a, and the operating lever of the open / close operating member 10c is opened to connect the connecting pipe. 11a and the injection nozzle 10 are brought into a communication state.

  Then, when the compressor 2 is driven so that pressurized air is ejected from the ejection pipe 7 and the ejection pipe 7 is swung, the swirl area of the ejection pipe 7, that is, the entire rear of the swirling area having a conical shape in the outer cylinder (in the drawing) NP) is the negative pressure region. This negative pressure is concentrated in the cylindrical space of the outer cylinder rear end 6a having a narrow diameter, and acts strongly on the injection port 10a of the injection nozzle 10. The water from the water tap 31 is ejected from the injection port 10a in a pressurized state. Accordingly, the suction force due to the negative pressure is added to the water pressure of the tap water, and the water is ejected vigorously forward. The relationship between the negative pressure acting on the cleaning liquid and the pressure applied to the cleaning liquid is the same in the case of the storage container 32 that is detachably mounted.

The sprayed cleaning liquid is diffused into the trumpet-like inner space of the outer cylinder 6 and guided to the outer cylinder open end. At this time, the diffused cleaning liquid is refined by being brought into contact with the swirling flexible ejection pipe 7 and sheared to form a fine mist. The mist-like cleaning liquid is vigorously ejected forward as a mixed flow with the pressurized air ejected from the ejection pipe, and it also strikes the surface to be cleaned and also removes oil stains that cannot be removed only by the air flow.
Since the dirt on the surface to be cleaned becomes wet by the cleaning liquid, it is more easily removed by sliding the brush.

When the finger is released from the trigger and the jet of pressurized air is stopped, negative pressure does not act on the nozzle injection port 10a. Around this time, the operation lever of the opening / closing operation member 10c is returned to the closed position, thereby stopping the ejection of air and liquid.
In the case where the storage container 32 is used, the storage container 32 may be removed from the gun body 1a and filled when the internal cleaning liquid is exhausted.

This device uses only negative pressure without pressurizing the liquid by appropriately setting the length of the outer cylinder and gas ejection pipe, the volume behind the swivel region that becomes the negative pressure region, or the position of the nozzle injection port. It is possible to carry out diffusion injection in the state which atomized the liquid mixture of a liquid and gas ahead.
Further, instead of a compressor, an aerosol-type compressed air supply source may be used as the pressurized gas supply source. In this case, an aerosol can or the like is connected to the end of the air supply line extending from the base end of the grip portion of the gun body.
In the above-described embodiment, the case where the present apparatus is used as an ejection apparatus for cleaning has been described, but the present invention can also be used as an ejection apparatus for coating as it is.

Schematic which showed the fluid ejection apparatus which concerns on one Embodiment of this invention in the partial cross section. Sectional drawing of the principal part of a conventional apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fluid ejection gun 2 Pressurized air supply source 3 Liquid supply source 4 Connection body 4a Passing path 5 Injection mechanism part 6 Outer cylinder 7 Injection pipe 9 Balancer 10 Nozzle member 10a Nozzle injection port 10b Nozzle base part 10c Opening / closing operation member 11 (11a 11b) Connection line 12 between the liquid supply source and the nozzle member 12 Brush 31 Water supply source 32 Liquid storage container

Claims (12)

A gas ejection pipe formed by a flexible pipe;
An outer cylinder that surrounds the entire area of the gas jet pipe in the longitudinal direction and forms a front-opening trumpet shape;
A nozzle member attached to the rear portion of the outer cylinder, and for ejecting liquid toward the open end in the front of the outer cylinder;
The gas ejection pipe has a proximal end fixed to the rear end portion of the outer cylinder and communicates with a pressurized gas supply source via a pipe line, while a distal end is positioned in the vicinity of the open end where the outer cylinder is expanded. Then, a free end is formed, and at least the front portion of the ejection pipe swirls along the inner surface of the outer cylinder by the pressurized gas being ejected from the tip.
The nozzle member is communicated with a liquid supply source via a conduit, and the liquid is ejected from the open end of the outer cylinder through the swirl region from behind the swirl region of the ejection pipe.
A fluid ejection device characterized by that. The fluid ejection device according to claim 1, wherein
An annular brush is attached along the open end surface of the outer cylinder,
Fluid ejection device. The fluid ejection device according to claim 1, wherein
The fluid ejection device, wherein the gas ejection pipe and the outer cylinder are detachably attached to a tip of a gun-type air ejection device. The liquid source is water;
The nozzle member ejects liquid by the water pressure of tap water and the negative pressure generated behind the swirling region with the swirling motion of the gas ejection pipe.
The fluid ejection device according to claim 1. The liquid supply source is a storage container that is detachably attached to a gun-type air ejection device and contains liquid in a pressurized or unpressurized state.
The fluid ejection device according to claim 1. The nozzle member is composed of a plurality of nozzle members that eject different liquids or the same liquid to different positions of the rear end portion of the outer cylinder.
The fluid ejection device according to claim 1, wherein the fluid ejection device is provided. The liquid supply conduit of the nozzle member has an open / close valve in the middle.
The fluid ejection device according to claim 1 or 4. A balancer that assists the swivel movement of the gas ejection pipe is attached to the outer periphery of the gas ejection pipe.
The fluid ejection device according to claim 1. The gas ejection pipe is made of a flexible synthetic resin tube material,
The fluid ejection device according to claim 1. The pressurized gas is air compressed by a compressor.
The fluid ejection device according to claim 1. The pressurized gas supply source is an aerosol-type compressed air supply source.
The ejection device according to any one of claims 1 to 3. The liquid is cleaning water or cleaning liquid or cleaning liquid containing a polishing material.
The fluid ejection device according to claim 1.

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