Liquid sprayer, liquid sprayer with container, and attachment for liquid sprayer

Abstract

To provide a liquid sprayer that can spray liquid including fine bubble with high density, a liquid sprayer with a container and an attachment for a liquid sprayer.SOLUTION: The liquid sprayer comprises: a pump main body; a nozzle 4, mounted on the pump main body, which has a spray port 4a through which liquid 5 is sprayed; an operation lever, mounted on the pump main body, which acts as a trigger to make the nozzle 4 spray the liquid 5; and a generation chip 7, provided at a tip of the nozzle 4, which generates the liquid 5 mixed with fine bubble. The generation chip 7 comprises an opening 7a through which the liquid 5 supplied through the spray port 4a of the nozzle 4 flows, a discharge port 7b provided at the other side of the opening 7a, an air suction window 8 for suctioning outside air into the generation chip 7, and a porous member (a mesh 9) provided between the air suction window 8 and the discharge port 7b. The porous member (the mesh 9) is positioned closer to the air suction window 8 than the discharge port 7b.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a liquid ejector capable of ejecting a liquid containing fine bubbles, a liquid ejector with a container, and an attachment for a liquid ejector.

Background Art

[0002] Regarding a liquid containing fine bubbles (for example, ultrafine bubbles with a bubble diameter of about 100 nm), when this is ejected, an infiltration effect into the skin for moisturizing, a cleaning effect due to the small size of the bubbles and the negatively charged bubbles are expected. For example, Patent Document 1 describes a liquid ejector (described as a mist spray in the same document) that includes a mist guide forming a spiral mist flow path and ejects mist-like droplets mixed with bubbles.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the liquid ejector described in Patent Document 1, the concentration of fine bubbles in the liquid is low, and there is room for improvement regarding the generation of fine bubbles for enhancing the above effects.

[0005] The present invention provides a liquid ejector capable of ejecting a liquid containing a high concentration of fine bubbles, a liquid ejector with a container, and an attachment for a liquid ejector.

Means for Solving the Problems

[0006] The present invention relates to a liquid ejector comprising a pump body, a nozzle attached to the pump body and having an outlet for ejecting liquid, an operating lever attached to the pump body and acting as a trigger for ejecting liquid from the nozzle, and a generating tip provided at the tip of the nozzle for generating a liquid mixed with fine bubbles, wherein the generating tip comprises an opening through which the liquid supplied from the outlet of the nozzle passes, a discharge port provided on the opposite side of the opening, an air intake window for taking in outside air into the generating tip, and a porous member provided between the air intake window and the discharge port, wherein the porous member is located on the air intake window side of the discharge port. [Effects of the Invention]

[0007] According to the liquid dispenser, liquid dispenser with container, and attachment for liquid dispenser of the present invention, the concentration of fine bubbles can be increased by effectively applying shear force from the porous member to the bubbles contained in the liquid. [Brief explanation of the drawing]

[0008] [Figure 1] This is an overall diagram showing a liquid dispenser with a container. [Figure 2] This is a magnified perspective view of the generation chip portion. [Figure 3] This is a cross-sectional view showing the area from the nozzle to the discharge port. [Figure 4] This diagram shows the state of the liquid sprayed from the nozzle with the attachment (generating chip) removed. [Figure 5] This figure shows the UFB concentration values ​​for various combinations of impact distance from the nozzle to the mesh and the number of meshes. [Figure 6] This figure shows the UFB concentration and bubble diameter values ​​for different impact distances from the nozzle to the mesh when using a mesh with 40 mesh counts. [Figure 7] This figure shows the UFB concentration and bubble diameter values ​​for different mesh counts when the impact distance from the nozzle to the mesh is 6 mm. [Modes for carrying out the invention]

[0009] Hereinafter, examples of preferred embodiments of the present invention will be described with reference to the drawings. The drawings illustrating this embodiment are merely illustrative of the configuration, shape, and arrangement of components of the liquid dispenser, liquid dispenser with container, and liquid dispenser attachment of the present invention, and do not limit the present invention. Furthermore, in all drawings, similar components are denoted by the same reference numerals, and redundant explanations are omitted as appropriate.

[0010] <Overview> First, an overview of the embodiments of the present invention will be described with reference to Figures 1 to 3. Figure 1 is an overall view of the liquid dispenser U with a container, Figure 2 is an enlarged perspective view of the generation tip 7 (attachment 10), and Figure 3 is a cross-sectional view showing the area from the nozzle 4a to the discharge port 7b.

[0011] As shown in Figures 1 to 3, the liquid dispenser 1 according to this embodiment comprises a pump body 3, a nozzle 4 attached to the pump body 3 and having an outlet 4a for ejecting liquid 5, an operating lever 6 attached to the pump body 3 and acting as a trigger for ejecting liquid 5 from the nozzle 4, and a generating tip 7 provided at the tip of the nozzle 4 for generating liquid 5 mixed with fine bubbles. The generating chip 7 includes an opening 7a through which the liquid 5 supplied from the nozzle outlet 4a of the nozzle 4 passes, a discharge port 7b provided on the opposite side of the opening 7a, an air intake window 8 for taking in outside air into the generating chip 7, and a porous member (mesh 9) provided between the air intake window 8 and the discharge port 7b. The porous member (mesh 9) is located on the air intake window 8 side of the discharge port 7b.

[0012] Note that "being located on the air intake window side rather than the discharge port 7b" means being located in the half region on the air intake window 8 side when the region between the air intake window 8 and the discharge port 7b is divided into two equal parts in the direction in which the liquid 5 flows within the generation tip 7. In other words, the shortest distance from the mesh 9 to the air intake window 8 is shorter than the shortest distance from the mesh 9 to the discharge port 7b.

[0013] "Triggering" means changing the state (e.g., pressure state) inside the pump body 3 or operating the internal mechanism of the pump body 3 to suck up the liquid 5 from the container body 2. Also, in this embodiment, "microbubbles" mean UFB (ultra-fine bubbles 12) with a bubble diameter of about 100 nm or less. The liquid 5 passes through the opening 7a because the ejection pressure is applied to the liquid 5 from the ejection port 4a. Note that the liquid ejector 1 according to this embodiment is preferably a pressure accumulation type. The pressure accumulation type liquid ejector 1 means that even when the operation lever 6 serving as a trigger is operated, the content is not discharged until the hydraulic pressure of the liquid 6 stored in a cylinder (not shown) provided in the internal mechanism of the pump body 3 reaches a predetermined hydraulic pressure, and it is configured to be discharged when it reaches a predetermined hydraulic pressure or higher.

[0014] In this embodiment, outside air is taken into the generation tip 7 from the air intake window 8 because when the liquid 5 is ejected from the small-diameter ejection port 4a, the surrounding of the liquid 5 becomes a negative pressure due to the Venturi effect. Regarding the "porous member", in this embodiment, the mesh 9 formed in a mesh shape is described, but it is only necessary that a plurality of holes are provided, and it is not limited to such a configuration. For example, it may be something like a punch plate formed with a plurality of round holes or polygonal holes.

[0015] According to the above configuration, the shearing force from the porous member (mesh 9) is effectively applied to the bubbles 11 included in the liquid 5, so that fine ultra-fine bubbles 12 can be generated while increasing their number. Furthermore, because the porous member (mesh 9) is located on the air intake window 8 side of the discharge port 7b, shear force from the porous member (mesh 9) can be effectively applied to the air bubbles 11 contained in the liquid 5.

[0016] Furthermore, the liquid dispenser U with a container according to this embodiment includes a liquid dispenser 1 and a container body 2 that contains liquid 5. With the above configuration, the above effects of the liquid dispenser 1 can be enjoyed even with the liquid dispenser U with a container.

[0017] Furthermore, the attachment for the liquid dispenser according to this embodiment (attachment 10), as shown in Figures 1 to 3, is used by being attached to the tip of the nozzle 4 of a liquid dispenser 1, which comprises a pump body 3, a nozzle 4 attached to the pump body 3 and having an outlet 4a for ejecting liquid 5, and an operating lever 6 that acts as a trigger for ejecting liquid 5 from the nozzle 4, in order to generate liquid 5 mixed with fine bubbles. The attachment 10 includes an opening 7a through which the liquid 5 supplied from the nozzle 4a passes, a discharge port provided on the opposite side of the opening 7a, an air intake window 8 for taking in outside air into the attachment 10, and a porous member (mesh 9) provided between the air intake window 8 and the discharge port 7b. As described above, the porous member (mesh 9) is located on the side of the air intake window 8 that is closer to the discharge port 7b.

[0018] In other words, attachment 10 has the same function as the generating tip 7 attached to the tip of the nozzle 4 of the liquid ejector 1, and is configured to be retrofitted to the tip of the nozzle 4. With the above configuration, the attachment 10, which is mounted on the tip of the nozzle 4 of the liquid dispenser 1, can also enjoy the above-mentioned effects of the liquid dispenser 1.

[0019] <Overall Structure> Next, the overall configuration of the liquid dispenser U with a container will be explained with reference to Figure 1. The liquid dispenser U with a container includes, as described above, a liquid dispenser 1 and a container body 2 containing liquid 5. As described above, the liquid dispenser 1 comprises a pump body 3, a nozzle 4 attached to the tip of the pump body 3 and having an outlet 4a for ejecting liquid 5, an operating lever 6 which acts as a trigger for ejecting liquid 5 from the nozzle 4, and a generating tip 7 which generates liquid 5 mixed with fine bubbles.

[0020] Next, the nozzle 4 and the generating tip 7 (attachment 10) will be described, mainly with reference to Figures 2 and 3.

[0021] <Nozzle> As shown in Figure 3, a nozzle 4a is formed at the center of the tip of the nozzle 4, from which liquid 5 is ejected when the operating lever 6 is operated. The diameter d of the nozzle 4a in this embodiment is 0.3 mm, which is a very small diameter compared to conventional nozzles. The nozzle 4a has a spiral guide (not shown) formed in an air intake channel (not shown) on the outer diameter side of the nozzle 4a, so that a swirling flow (conical liquid film 5a) is formed on the ejected liquid 5.

[0022] <Generated chip> The generating chip 7 is the part that generates ultrafine bubbles 12, and comprises a ring-shaped base end member 7f and a tip end member 7g, and a mesh 9 disposed between them. The base end member 7f is connected to the nozzle 4 and has an opening 7a formed at its base end, a narrow-diameter portion 7d that is continuous with the opening 7a, and a wide-diameter portion 7e that is larger in diameter than the narrow-diameter portion 7d, separated from the narrow-diameter portion 7d by a step 7c. The opening 7a, the narrow-diameter portion 7d, and the wide-diameter portion 7e form part of the flow path for the liquid 5 ejected from the nozzle outlet 4a of the nozzle 4.

[0023] The narrow diameter portion 7d has an air intake window 8 that communicates with the outside and allows outside air to be taken in. In this embodiment, the air intake window 8 is a 1 mm square through-hole formed in the thickness direction, and four of them are formed in the circumferential direction of the generated chip 7. The shape and number of air intake windows 8 can be set arbitrarily.

[0024] In the section where the air intake window 8 is provided (narrow diameter section 7d), the upstream flow path diameter D adjacent to the nozzle 4a is 1.4 mm. The nozzle 4a, formed with a diameter d of 0.3 mm as described above, is formed to be sufficiently small compared to the flow path diameter D of 1.4 mm.

[0025] This configuration creates a large negative pressure on the liquid 5 ejected from the nozzle 4a to the area where the air intake window 8 (narrow diameter section 7d) is located, allowing a large amount of air introduced through the air intake window 8 to be drawn into the liquid 5.

[0026] The negative pressure generated in this area can be expressed by the following formula.

number

[0027] A receiving recess 7i is formed on the end face of the tip side of the base end member 7f, which is recessed towards the base end compared to the surrounding area. The mesh 9 is housed in this receiving recess 7i. The mesh 9, while housed in the receiving recess 7i, is held between the base end member 7f and the tip end member 7g. In this embodiment, specifically as shown in Figure 2, the base end member 7f and the tip end member 7g are each provided with four mounting holes 7h in the circumferential direction that communicate in the thickness direction. The base end member 7f and the tip end member 7g are connected with the mesh 9 contained within them by passing bolts (not shown) through these mounting holes 7h and fastening them with nuts (not shown). The mesh 9 according to this embodiment has a mesh opening of 0.4 mm and a mesh count of 40. Other mesh counts will be discussed later.

[0028] As shown in Figure 3, in the flow path through which the liquid 5 passes in the generating chip 7, the inner diameter D2 of the area where the porous member (mesh 9) is provided is larger than the inner diameter D1 of the area where the air intake window 8 is provided.

[0029] With the above configuration, the nozzle side where the mesh 9 is located can be made to have negative pressure, thereby increasing the amount of air intake. In addition, by allowing the liquid 5 to come into contact with a wide area of ​​the mesh 9, the bubbles 11 mixed in the liquid 5 can be made even finer to form ultrafine bubbles 12, and their number can be increased.

[0030] As shown in Figure 3, in the flow path of the liquid 5 in the generating chip 7, the inner diameter of the portion where the porous member (mesh 9) is provided (large diameter portion 7e) is larger than the inner diameter of the portion where the air intake window 8 is provided (small diameter portion 7d), with a step 7c in between. With the above configuration, the pressure of the liquid 5 passing through the area where the mesh 9 is provided is relatively lower than the pressure at the area where the air intake window 8 is provided, thereby expanding the bubbles contained in the liquid 5. As a result, a shear force is applied to the expanded bubbles 11 from the generation tip 7, effectively generating fine bubbles.

[0031] As shown in Figure 3, the conical liquid film 5a formed by the liquid 5 ejected from the nozzle 4a is dimensionally arranged so that it does not come into contact with either the narrow diameter portion 7d where the air intake window 8 is provided, or the wide diameter portion 7e where the porous member (mesh 9) is provided. In other words, the device is configured such that a space is formed between the conical liquid film 5a formed by the liquid 5 ejected from the nozzle 4a and the narrow diameter portion 7d and the wide diameter portion 7e.

[0032] Furthermore, whether or not the above-mentioned "non-contact dimensional relationship" exists can be confirmed by cutting the generating chip 7, which extends from the nozzle 4a in the direction of liquid 5 ejection, perpendicular to the ejection axis of liquid 5, observing the liquid film 5a ejected from the nozzle 4a in that state, and comparing the dimensions of the liquid film 5a with the dimensions inside the generating chip 7. A specific observation method is to take images using a high-speed camera or similar device (for example, FASTCAM NovaS12, manufactured by Photron).

[0033] Here, the conical liquid film 5a described above is formed when the liquid 5 is sprayed during "normal use". Here, "normal use" refers to, for example, in this embodiment, the case in which the liquid 5 is sprayed with a viscosity of 1 mPa·second and a spray velocity of 5.6 m / second at the nozzle 4a. With the above configuration, it is possible to avoid a decrease in the pressure of the liquid discharged from the discharge port 7b due to friction caused by contact with the liquid film 5a, and to prevent liquid dripping from the air intake window 8 and the accumulation of liquid in the part supporting the mesh 9 (large diameter part 7e).

[0034] <Various conditions> Next, various conditions of the liquid dispenser 1 according to this embodiment will be described, mainly with reference to Figures 4 to 7. Figure 4 shows the state of the liquid 5 ejected from the nozzle 4a with the attachment 10 (generation chip 7) removed. In Figure 4, of the liquid 5 ejected from the nozzle 4a, the straight portion of the conical liquid film 5a is defined as the straight region R1 in the direction of ejection, the portion where the ridge line 5b of the liquid film 5a is wavy is defined as the wave film region R2, the portion where the liquid 5 is dispersed is the dispersion region R3, and the portion that has become mist-like is the mist region R4.

[0035] Figure 5 shows the UFB concentration values ​​for different combinations of impact distance from nozzle 4a to mesh 9 and mesh count. Figure 6 shows the UFB concentration and bubble diameter values ​​for different impact distances from nozzle 4a to mesh 9 when using mesh 9 with 40 mesh counts. Figure 7 shows the UFB concentration and bubble diameter values ​​for different mesh counts when the impact distance from nozzle 4a to mesh 9 is 6 mm.

[0036] The porous member (mesh 9) is provided between the nozzle 4a and the region where the liquid film 5a formed by the liquid 5 ejected from the nozzle 4a shown in Figure 4 undulates (wave film region R2) in the ejection direction.

[0037] The position of the wave film region R2 changes depending on the viscosity and injection speed of the liquid 5. The region where the liquid film 5a undulates (wave film region R2) related to the placement of the mesh 9 is the region where the liquid 5 undulates when the liquid sprayer 1 sprays liquid 5 during "normal use" as described above. Furthermore, since the position of the wave film region R2 changes depending on the viscosity or injection speed of the liquid 5, the position of the mesh 9 should be determined according to the viscosity of the liquid 5 contained in the container body 2 and the wave film region R2 which changes according to the injection speed of the liquid 5.

[0038] The position of the above-mentioned wave film region R2 can be determined by spraying liquid 5 from the nozzle 4a with the generation tip 7 removed from the liquid ejector U with a container, as shown in Figure 4.

[0039] According to the above configuration, a mesh 9 is provided between the region where the liquid film 5a undulates (wave film region R2) and the nozzle 4a. In other words, the liquid 5 reaches the mesh 9 before it disperses (reaches the dispersion region R3), and a shear force is applied from the mesh 9 to the bubbles contained in the liquid 5, thereby forming many fine bubbles.

[0040] In particular, it is even more preferable that the porous member (mesh 9) is located within the region where the liquid 5 ejected from the nozzle 4a forms a continuous film (straight-line region R1 and wave-film region R2), and within the region where the liquid film 5a of the ejected liquid 5 undulates in the ejection direction (wave-film region R2). Here, the wave film region R2 is defined as the region where the amplitude of the ridge line 5b of the liquid film 5a is 0.6 mm or more.

[0041] With the above configuration, a mesh 9 is provided within the wave film region R2 where the liquid film 5a of the ejected liquid 5 undulates, thereby enabling the formation of many fine bubbles.

[0042] The porous member (mesh 9) according to this embodiment is provided within a range of 2 mm to 10 mm from the nozzle 4a in the ejection direction. According to the above configuration, the concentration of ultrafine bubbles 12 can be increased.

[0043] In this embodiment, as shown in Figure 5, the UFB (ultrafine bubble) concentration (number of bubbles with a diameter of 100 nm or less per 1 mL) was measured at distances of 2 mm, 6 mm, and 10 mm from the nozzle 4a to the mesh 9 (impact distance X shown in Figure 3) using a mesh 9 with a mesh count of 40, and the UFB concentration at an impact distance X of 6 mm was measured using mesh 9 with a mesh count of 30 and 60. As a result, in all measurements, the UFB concentration was 2 × E +09 The value was greater than or equal to 1 / mL.

[0044] Furthermore, the porous member (mesh 9) is formed in a mesh-like structure, and it is preferable that the number of meshes in mesh 9 be between 30 and 60. Furthermore, the number of meshes in mesh 9 can be in the range of 20 to 60, and is more preferably 35 to 45. In this way, by installing a mesh 9 with an optimal mesh size, the flow velocity of the injected liquid 5 can be moderately disturbed in the region where ultrafine bubbles 12 are generated, thereby atomizing the bubbles and increasing the UFB concentration, and the deceleration can be suppressed within a predetermined range.

[0045] Furthermore, as shown in Figure 6, when using mesh 9 with 40 mesh counts, the UFB concentration is 4.1 × E when the collision distance is 2 mm. +09 With a concentration of 4.0 × E, the average bubble diameter was 177 nm, and the collision distance was 6 mm. +09 With a concentration of 162 nm per 10 mm and an average bubble diameter of 162 nm, the UFB concentration is 2.2 × E. +09 The bubble density was 190 nm per mL, with an average bubble diameter of 190 nm.

[0046] Furthermore, it is more preferable that the porous member (mesh 9) is located within a range of 2 mm to 6 mm from the nozzle 4a in the ejection direction, and it is preferable that it is located within a range of 2 mm to 4 mm, as this allows for a higher UFB concentration.

[0047] Furthermore, as shown in Figure 7, when the collision distance X is 6 mm, and mesh 9 with 30 meshes is used, the UFB concentration is 2.3 × E +09 With a concentration of 40 particles / mL and an average bubble diameter of 200 nm, the UFB concentration was 4.16 × E when using a mesh with 40 mesh counts and 9 mesh. +09 With cells / mL and an average bubble diameter of 202 nm, and using a mesh 9 with 60 mesh counts, the UFB concentration was 1.70 × E +09 The bubble density was 218 nm per mL, with an average bubble diameter of 218 nm. Note that while the conditions for a mesh count of 40 and a collision distance of 6 mm are the same in Figures 6 and 7, the UFB concentration and average bubble diameter are different because they are data from different samples.

[0048] Although the configuration of the above embodiment has been described as an example, the various components related to the liquid dispenser, liquid dispenser with container, and attachment for the liquid dispenser of the present invention do not need to be independent entities. It is permissible for multiple components to be formed as a single member, for one component to be formed from multiple members, for one component to be part of another component, for a part of one component to overlap with a part of another component, and so on.

[0049] The above embodiment encompasses the following technical concepts. (1) A liquid dispenser comprising a pump body, a nozzle attached to the pump body and having an outlet for ejecting liquid, an operating lever attached to the pump body and acting as a trigger for ejecting liquid from the nozzle, and a generating tip provided at the tip of the nozzle for generating a liquid mixed with fine bubbles, wherein the generating tip comprises an opening through which the liquid supplied from the outlet of the nozzle passes, a discharge port provided on the opposite side of the opening, an air intake window for taking in outside air into the generating tip, and a porous member provided between the air intake window and the discharge port, wherein the porous member is located on the air intake window side of the discharge port. (2) The liquid ejector according to (1), wherein the porous member is provided between the region where the liquid film formed by the liquid ejected from the nozzle undulates and the nozzle in the ejection direction. (3) The liquid ejector according to (1) or (2), wherein the porous member is provided in a region in which the liquid ejected from the nozzle is continuous in a film-like manner, and in a region in which the liquid film of the ejected liquid is wavy in the ejection direction. (4) A liquid ejector according to any one of (1) to (3), wherein in the flow path through which the liquid passes in the generating chip, the inner diameter of the portion where the porous member is provided is larger than the inner diameter of the portion where the air intake window is provided. (5) The liquid ejector according to (4), wherein in the flow path through which the liquid passes in the generating chip, the inner diameter of the portion where the porous member is provided is larger than the inner diameter of the portion where the air intake window is provided, with a step in between. (6) The liquid ejector according to (4) or (5), wherein the conical liquid film formed by the liquid ejected from the nozzle is dimensionally such that it does not come into contact with the narrow diameter portion where the air intake window is provided or with the wide diameter portion where the porous member is provided. (7) The liquid ejector according to any one of (1) to (6), wherein the porous member is provided within a range of 2 mm to 10 mm from the nozzle in the ejection direction. (8) The liquid ejector according to any one of (1) to (7), wherein the porous member is formed in a mesh-like manner, and the number of meshes of the porous member is preferably 20 or more, more preferably 30, and preferably 60 or less, and more preferably 45 or less. (9) A liquid dispenser with a container, comprising a liquid dispenser as described in any one of items (1) to (8), and a container body containing the liquid. (10) The liquid dispenser according to any one of (1) to (9), wherein the liquid dispenser is of the accumulator type. (11) A liquid dispenser attachment used by being attached to the tip of the nozzle of a liquid dispenser comprising a pump body, a nozzle attached to the pump body and having an outlet for ejecting liquid, and an operating lever that acts as a trigger for ejecting liquid from the nozzle, for generating a liquid mixed with fine bubbles, the attachment comprising an opening through which the liquid supplied from the outlet of the nozzle passes, a discharge port provided on the opposite side of the opening, an air intake window for taking in outside air into the liquid dispenser attachment, and a porous member provided between the air intake window and the discharge port, wherein the porous member is located on the air intake window side of the discharge port. (12) The attachment for a liquid dispenser according to (11), wherein the porous member is provided between the region where the liquid film formed by the liquid ejected from the nozzle undulates in the ejection direction and the nozzle. (13) The attachment for a liquid dispenser according to (11) or (12), wherein the porous member is provided in a region in which the liquid ejected from the nozzle is continuous in a film-like manner, and in a region in which the liquid film of the ejected liquid is wavy in the ejection direction. (14) In the flow path through which the liquid passes in the generating chip, the inner diameter of the portion where the porous member is provided is larger than the inner diameter of the portion where the air intake window is provided. The attachment for a liquid dispenser according to any one of (11) to (13). (15) In the flow path through which the liquid passes in the generating chip, the inner diameter of the portion where the porous member is provided is larger than the inner diameter of the portion where the air intake window is provided, with a step in between, the attachment for a liquid dispenser as described in (14). (16) The attachment for a liquid dispenser according to (14) or (15), wherein the conical liquid film formed by the liquid ejected from the nozzle is dimensionally such that it does not come into contact with the narrow diameter portion where the air intake window is provided or with the wide diameter portion where the porous member is provided. (17) The porous member is provided within a range of 2 mm to 10 mm from the nozzle in the discharge direction, an attachment for a liquid dispenser according to any one of (11) to (16). (18) The porous member is formed in a mesh-like manner, and the number of meshes of the porous member is 30 to 60, the attachment for a liquid dispenser according to any one of (11) to (17). A liquid dispenser with a container, comprising an attachment for a liquid dispenser as described in any one of paragraphs (19)(11) to (18), the liquid dispenser, and a container body containing the liquid. (20) A method for generating microbubbles using a liquid ejector comprising a pump body, a nozzle attached to the pump body having an outlet for ejecting liquid, an operating lever attached to the pump body acting as a trigger for ejecting liquid from the nozzle, and a generating tip provided at the tip of the nozzle for generating a liquid mixed with microbubbles, wherein the generating tip is provided with an opening through which the liquid supplied from the outlet of the nozzle passes, a discharge port provided on the opposite side of the opening, an air intake window for taking in outside air into the generating tip, and a porous member provided between the air intake window and the discharge port, wherein the porous member is located on the air intake window side of the discharge port, and the liquid passes through the generating tip to generate microbubbles. [Explanation of symbols]

[0050] 1 liquid squirt 2. Container body 3. Pump body 4 nozzles 4a spout 5 liquid 5a Liquid film 5b Ridge 6. Operating lever 7 Generation chips 7a aperture 7b Discharge port 7c step 7d narrow diameter part 7e Large diameter part 7f Base end member 7g tip side component 7h mounting holes 7i Recessed area 8. Air intake window 9 Mesh (porous material) 10 Attachments (Attachments for liquid dispensers) 11 bubbles 12 Ultrafine bubbles R1 Straight-line area R2 wave film region R3 distributed area R4 Mist Area U-shaped container with liquid dispenser

Claims

1. A pump body; a nozzle attached to the pump body and having a nozzle for ejecting liquid; A liquid ejector including: an operating lever attached to the pump body and serving as a trigger for ejecting liquid from the nozzle; and a generating tip provided at the tip of the nozzle for generating liquid mixed with fine bubbles, The generating chip comprises: the nozzle includes an opening through which the liquid supplied from the outlet of the nozzle passes, a discharge port provided on the opposite side to the opening, an air intake window for taking in outside air into the production chip, and a porous member provided between the air intake window and the discharge port, 2. A liquid ejector, comprising: a nozzle for ejecting liquid from a nozzle hole of the liquid ejection device;

2. 2. The liquid ejector according to claim 1, wherein the porous member is provided between the ejection port and a region in the ejection direction where a liquid film formed by the liquid ejected from the ejection port undulates.

3. 2. The liquid ejector according to claim 1, wherein the porous member is provided within a region where the liquid ejected from the ejection port forms a continuous film and where the liquid film of the ejected liquid undulates in the ejection direction.

4. 2. The liquid ejector according to claim 1, wherein the flow path in the production tip through which the liquid passes has an inner diameter greater at a portion where the porous member is provided than at a portion where the air inlet window is provided.

5. The liquid ejector according to claim 4 , wherein the inner diameter of the portion of the flow path in the production chip through which the liquid passes, where the porous member is provided, is larger than the inner diameter of the portion of the flow path through which the air intake window is provided, with a step therebetween.

6. 5. A liquid jetting device according to claim 4, wherein a dimensional relationship is such that a conical liquid film formed by the liquid jetted from the jetting outlet does not come into contact with either the narrow diameter portion in which the air intake window is provided or the large diameter portion in which the porous member is provided.

7. 2. The liquid ejector according to claim 1, wherein the porous member is provided within a range of 2 mm to 10 mm from the ejection port in the ejection direction.

8. The porous member is formed in a mesh shape, 2. The liquid ejector according to claim 1, wherein the number of meshes of the porous member is 30 to 60.

9. A liquid ejector according to any one of claims 1 to 8; A container body containing the liquid.

10. A liquid ejector attachment is provided which is attached to a tip of a nozzle of a liquid ejector having a pump body, a nozzle attached to the pump body and having an ejection port for ejecting liquid, and an operating lever which serves as a trigger for ejecting liquid from the nozzle, and which generates a liquid mixed with fine bubbles, the liquid ejector attachment comprises an opening through which the liquid supplied from the ejection port of the nozzle passes, an ejection port provided on the opposite side to the opening, an air intake window for taking in outside air into the liquid ejector attachment, and a porous member provided between the air intake window and the ejection port, 2. An attachment for a liquid ejector, wherein the porous member is located closer to the air intake window than the discharge port.

Images