KR20160112282A - Suction nozzle - Google Patents

Suction nozzle Download PDF

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Publication number
KR20160112282A
KR20160112282A KR1020150037642A KR20150037642A KR20160112282A KR 20160112282 A KR20160112282 A KR 20160112282A KR 1020150037642 A KR1020150037642 A KR 1020150037642A KR 20150037642 A KR20150037642 A KR 20150037642A KR 20160112282 A KR20160112282 A KR 20160112282A
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KR
South Korea
Prior art keywords
suction nozzle
sample
body surface
protrusions
slits
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Application number
KR1020150037642A
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Korean (ko)
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KR101683758B1 (en
Inventor
이상준
이승철
Original Assignee
포항공과대학교 산학협력단
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Priority to KR1020150037642A priority Critical patent/KR101683758B1/en
Publication of KR20160112282A publication Critical patent/KR20160112282A/en
Application granted granted Critical
Publication of KR101683758B1 publication Critical patent/KR101683758B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02—Burettes; Pipettes
    • B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
    • B01L3/0217—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type
    • B01L3/022—Capillary pipettes, i.e. having very small bore
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2400/00—Moving or stopping fluids
    • B01L2400/04—Moving fluids with specific forces or mechanical means
    • B01L2400/0403—Moving fluids with specific forces or mechanical means specific forces
    • B01L2400/0463—Hydrodynamic forces, venturi nozzles

Abstract

The present invention relates to a suction nozzle for sucking a liquid sample. The inner part of the nozzle has a cavity through which the sample is introduced. The suction nozzle comprises: at least one body surface disposed in the longitudinal direction; a head surface disposed at one end of the body surface; and an outlet which is formed at the other end of the body surface so that it is opposite to the head surface and allows discharge of the sample to the outside. In the suction nozzle, any one of the body surface and the head surface comprises a plurality of protrusions which protrudes out from the surface of the suction nozzle and is in contact with the sample to introduce the sample to the nozzle surface by using a capillary action; and a plurality of slits which is disposed alternately with the protrusions and passes through the nozzle surface so that the sample arriving at the surface of the suction nozzle may infiltrate into the suction nozzle. Thus, the surface of the suction nozzle maintains wetness so that it may suck the sample stably and smoothly. In addition, the sample sucked by the suction nozzle is transferred to the outlet of the suction nozzle and discharged to the outside, thereby facilitating suction and discharge of the sample.

Description

Suction nozzle {SUCTION NOZZLE}

The present invention relates to a suction nozzle.

In researches such as chemistry and life science, in order to analyze a small amount of biomaterials or samples, a process of sucking liquid substances or samples effectively and transferring them to a diagnostic apparatus is required. As micromachining technology develops, micro-sized devices for transferring a small amount of fluid have been actively studied.

Generally, a liquid-sucking conduit has a straw structure with one large hole at the end. This structure is useful in situations where the straw inlet is submerged in the fluid, but it is difficult to properly suck the fluid in an environment where the inlet is difficult to immerse in the fluid (for example, the fluid is spread in a thin film over the surface).

When a thin and widely spread liquid is to be sucked, a method of absorbing by using a sponge-type porous material is used. In the case of using a sponge-like porous material, it is possible to absorb the liquid, but there is no conduit structure, so there is a structural restriction to transfer and control the absorbed liquid.

SUMMARY OF THE INVENTION The present invention provides a suction nozzle having a structure capable of smoothly sucking a liquid sample under various conditions.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. It can be understood.

According to an embodiment of the present invention, a suction nozzle for sucking a liquid sample is a suction nozzle for sucking a liquid sample, and a hollow is formed in the nozzle to introduce the sample into the inside, A head surface disposed at one end of the body surface, and an outlet formed at the other end surface of the body surface so as to face the head surface, the sample being discharged to the outside, wherein the body surface and the head surface One of which is protruded from the surface of the suction nozzle and alternately arranged with a plurality of protrusions and protrusions which come into contact with the sample and use the capillary phenomenon to flow the sample to the surface of the suction nozzle, and the surface of the suction nozzle penetrates, And a plurality of slits that pass the sample reaching the surface of the suction nozzle to the inside of the suction nozzle.

According to an embodiment of the present invention, a plurality of slits and a plurality of protrusions are formed on the body surface, and the plurality of slits and the plurality of protrusions may be arranged in parallel along a direction intersecting the longitudinal direction of the body surface.

The protrusion of this embodiment can be made longer in length from both ends of the body surface to the center of the body surface.

The plurality of projections may be arranged symmetrically on both sides of the plurality of slits.

The plurality of projections may be formed into an acicular shape.

The plurality of protrusions may be made of a hydrophilic material.

According to another embodiment of the present invention, a plurality of projections are arranged side by side so as to protrude outward from an intersection line of the head surface and the body surface, and a plurality of slits may be arranged side by side with the plurality of projections on the head surface.

According to the present invention, when a plurality of protrusions and a plurality of slits are formed on any one of the body surface and the head surface so that the suction nozzle is immersed in a large amount of liquid sample, direct suction through a plurality of slits is possible, When the fluid is brought into contact with the surface spread with the thin film, the wetting can be maintained on the surface of the suction nozzle until the suction of the liquid sample is completed, so that the sample can be stably and smoothly sucked. In addition, since the sample sucked by the suction nozzle can be moved to the discharge port of the suction nozzle and discharged to the outside, the sample can be easily sucked and discharged.

1 is a view showing a suction nozzle according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of the suction nozzle of Fig. 1 taken along the longitudinal direction. Fig.
FIG. 3 is a view showing an interface formed by a liquid sample according to the height of the projection. FIG.
4 is a view schematically showing slits and protrusions of the suction nozzle of Fig. 1;
5 is a cross-sectional view taken along line AA 'in Fig.
6 is a cross-sectional view taken along line BB 'of FIG.
FIGS. 7 to 10 are views showing, in order, a process of sucking a liquid sample having a thin film shape by the suction nozzle of FIG. 1. FIG.
11 is a view showing a suction nozzle according to another embodiment of the present invention.
Fig. 12 is an enlarged view of the head portion of the suction nozzle of Fig. 6;
13 is a plan view showing protrusions on the head surface, the slit on the head surface, and the head surface in Fig.
14 is a cross-sectional view taken along line CC 'in Fig.
FIG. 15 is a view showing a process of sucking a liquid sample in the form of a thin film through a suction nozzle according to another embodiment of the present invention in order.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

FIG. 1 shows a suction nozzle 100 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the suction nozzle 100 of FIG. 1 taken along the longitudinal direction. 3 is a view showing the interface between the slit 112 of the body surface 110 of the suction nozzle 100 of FIG. 1 and the liquid sample according to the height of the protrusion of the body surface 110, and FIG. 3, and FIG. 5 is a cross-sectional view taken along line BB 'of FIG.

Hereinafter, a suction nozzle 100 according to an embodiment of the present invention will be described with reference to the drawings.

According to an embodiment of the present invention, the suction nozzle 100 for sucking a liquid sample may have a cavity formed therein to allow the sample to flow into the body, and the body surface 110, the head surface 142, And an outlet 130. The body surface 110 is disposed in the longitudinal direction of the suction nozzle 100 of this embodiment, and may be one or more. Accordingly, in the case of one body surface 110, the entire body may be formed as a curved surface to completely surround the suction nozzle 100. In the case of the body surface 110 having two or more body surfaces 110, The suction nozzle 100 can be formed by the combination. As described above, the suction nozzle 100 surrounded by the body surface 110 is provided with a hollow therein so that a liquid sample to be sucked into the suction nozzle 100 can be introduced into the suction nozzle 100.

The head surface 142 is disposed at one end of the body surface 110 and blocks the hollow of the suction nozzle 100 formed by the body surface 110 from completely penetrating the suction nozzle 100.

The discharge port 130 is disposed at the other end of the body surface 110 opposite to the head surface 142 and forms a path through which the sample introduced into the suction nozzle 100 is discharged to the outside.

At this time, any one of the body surface 110 and the head surface 142 may include a plurality of protrusions 120 and a plurality of slits 112. The suction nozzle 100 according to an embodiment of the present invention shown in FIGS. 1 to 7 has a plurality of protrusions 120 and a plurality of slits 112 formed on a body surface 110, and FIGS. 8 to 12 The suction nozzle 100 according to another embodiment of the present invention has a plurality of protrusions 120 and a plurality of slits 112 formed on the head surface 142. The suction nozzle 100 according to another embodiment of the present invention will be described later in detail.

The plurality of slits 112 are formed through the surface of the suction nozzle. When the suction nozzle 100 is submerged in a large amount of liquid, the liquid sucks the sample through the suction nozzle 112.

The plurality of protrusions 120 protrude from the surface of the suction nozzle 100. When the suction nozzle 100 is brought into contact with a liquid sample having a thin film shape, And the sample is sucked into an empty space formed in the sample. At this time, the gap formed between the plurality of protrusions 120 acts as a capillary, and the liquid samples can flow into the gap between the plurality of protrusions 120 through the capillary phenomenon.

The liquid sample flowing into the gap between the plurality of protrusions 120 using the capillary phenomenon is moved along the surface of the protrusion 120 and thus can be introduced to the surface of the suction nozzle 100. The liquid sample flowing into the gap between the plurality of protrusions 120 and being delivered to the surface of the suction nozzle 100 is spread over the surface of the plurality of protrusions 120 due to the surface tension of the sample, an interface that is stretched like a tent can be formed as shown in Fig.

At this time, if the height difference from the neighboring protrusions 120 is excessively large, the formation of the interface is not smooth as shown in FIG. 3 (b), and it is difficult to maintain the wetting phenomenon of the plurality of protrusions 120. Therefore, the heights of adjacent protrusions 120 should be similar to each other as shown in FIG. 3 (a).

The liquid sample moved to the surface of the suction nozzle 100 along the surface of the projection 120 passes through the plurality of slits 112 and is moved into the suction nozzle 100.

A plurality of slits 112 are arranged alternately with each of the plurality of protrusions 120 and a liquid sample moved to the surface of the suction nozzle 100 along the surface of the protrusion 120 is moved to the inside of the suction nozzle 100 And the surface of the suction nozzle 100 is penetrated.

Referring to FIGS. 4 to 6, the alternate arrangement of the plurality of protrusions 120 and the plurality of slits 112 will be described in detail. 4 is an enlarged view showing a state in which a plurality of protrusions 120 and a plurality of slits 112 are formed on the body surface 110 of the suction nozzle 100 as in this embodiment, Sectional view taken along the line AA 'in FIG. 4, and FIG. 6 is a cross-sectional view taken along line BB' in FIG.

4 and 5, the plurality of protrusions 120 are formed extending from the body surface 110 of the suction nozzle 100, and the plurality of slits 112 are formed in the shape shown in FIGS. 4 and 6 A plurality of protrusions 120 are formed so as to pass between the body surface 110 of the extended suction nozzle 100. [ Accordingly, it can be seen that the plurality of protrusions 120 and the plurality of slits 112 are arranged alternately.

The plurality of protrusions 120 and the plurality of slits 112 are arranged along the body surface 110 of the suction nozzle 100 in a direction intersecting the longitudinal direction of the body surface 110 At this time, the length of the protrusion 120 according to the present embodiment may become longer as the distance from both ends of the body surface 110 to the center of the body surface 110 increases. However, this is merely an example, and may be included in the scope of the present invention if the length of the plurality of protrusions 120 has a continuously varying shape.

When the plurality of protrusions 120 are arranged along the direction intersecting with the longitudinal direction of the body surface 110, it is easy to penetrate into the liquid sample in various conditions, so that it is easy to suck up the liquid sample by the capillary phenomenon It becomes. In the case where the length of the plurality of protrusions 120 is continuously changed, for example, as the length of the protrusions 120 increases from both ends to the center, as described above with reference to FIG. 3, It is possible to increase the wettability of the protrusions 120. [0064] Therefore, the liquid sample can flow into the suction nozzle 100 more smoothly.

On the other hand, the plurality of protrusions 120 may be arranged symmetrically on both sides of each slit 112. The protrusions 120 arranged symmetrically on both sides of the slit 112 are more efficient because they can suck liquid samples in both directions regardless of their positions.

At this time, the protrusion 120 according to the present embodiment is formed in a needle-like shape and is advantageous to support the interface formed due to the surface tension, and is made of a hydrophilic material, so that the capillary phenomenon can be utilized.

FIGS. 7 to 10 show a process of sucking a liquid sample having a thin film shape by the suction nozzle 100 according to an embodiment of the present invention.

7, when the suction nozzle 100 according to the present embodiment is brought into contact with a liquid sample having a thin film shape, a gap between the plurality of protrusions 120 is filled with a liquid sample . Referring to FIG. 8, the liquid sample gradually moves over the surface of the protrusion 120 to the surface of the suction nozzle 100 over time. Fig. 9 shows a state in which the sample is being sucked by the suction nozzle 100. Fig. Fig. 10 shows a state in which the tentative interface is formed by the surface tension of the sample even while the sample is being sucked, so that the wetness of the protrusions 120 is maintained.

Therefore, even if a small amount of the sample remains on the outside until the liquid sample is not present outside the suction nozzle 100 after the suction of the sample is completed, the wetting of the protrusion 120 can be kept constant, The suction nozzle 100 according to the embodiment can stably sample the sample in an environment in which wetting is maintained even in a limited situation in which a liquid sample made of a thin film is sucked.

Meanwhile, according to another embodiment of the present invention, a suction nozzle 100 in which a plurality of projections 144 and a plurality of slits 143 are formed on the head surface 142 may be provided.

FIG. 11 is a view showing a suction nozzle 100 according to another embodiment of the present invention, and FIG. 12 is an enlarged view of a head portion of the suction nozzle 100 of FIG. 13 is a plan view showing the head surface 142 of Fig. 12, the slit 143 of the head surface 142 and the projection 144 of the head surface 142, Fig. 14 is a cross- FIG. FIG. 15 is a view showing, in order, a process of sucking a liquid sample through the suction nozzle 100 according to another embodiment of the present invention.

11 to 15, the suction nozzle 100 according to the present embodiment includes a plurality of protrusions 144 and a plurality of slits 143 formed on the head surface 142, and the closed body surface 110 ).

The plurality of protrusions 144 of this embodiment protrude outward from the intersection of the head surface 142 and the body surface 110 and can contact the liquid sample before the surface of the suction nozzle 100, The spacing between the projections 144 is constant and is arranged side by side so as to suck up liquid samples using capillary phenomenon.

The plurality of slits 143 of this embodiment are arranged alternately with each of the plurality of protrusions 144 in the same manner as the slits 143 formed in the body surface 110, The surface of the head surface 142 is formed so as to penetrate through the suction nozzle 100 so that a liquid sample moved to the surface can be moved into the suction nozzle 100.

The specific principle of sucking the liquid sample by the plurality of protrusions 144 and the plurality of slits 143 is the same as the above-described embodiment, and therefore, the description is omitted in order to avoid duplication.

15 shows a process of sucking a liquid sample in the form of a thin film by a plurality of protrusions 144 and a plurality of slits 143 formed on the head surface 142 according to the present embodiment.

15, when the suction nozzle 100 according to the present embodiment is brought into contact with a liquid sample having a thin film shape as shown in FIG. 15A, a gap between the plurality of protrusions 144 The liquid sample penetrates by the capillary phenomenon. Referring to FIG. 15 (b), the liquid sample gradually moves over the surface of the projection 144 to the surface of the head surface 142 over time. Fig. 15 (c) shows a state in which the sample is being sucked by the suction nozzle 100. Fig. FIG. 15D shows a state in which the tentative interface is formed by the surface tension of the sample even while the sample is being sucked so that the wetness of the protrusions 144 is maintained.

Therefore, even if a small amount of the sample remains on the outside until the liquid sample does not exist outside the suction nozzle 100 after the suction of the sample is completed, the wetness of the projection 144 can be kept constant, The suction nozzle 100 according to the embodiment can stably sample the sample in an environment where wetting is maintained.

The suction nozzle 100 according to the embodiments of the present invention has been described above. A plurality of protrusions 120 and 144 and a plurality of slits 112 and 143 are formed on any one of the body surface 110 and the head surface 142 so that the suction nozzle 100 The liquid sample can be sucked through the plurality of slits 112 and 143. In this case, On the other hand, when the suction nozzle 100 is in contact with a liquid sample having a thin film shape, the plurality of protrusions 120 and 144 can maintain the wetting of the plurality of slits 112 and 143, . In addition, since the sample sucked by the suction nozzle 100 can be moved to the discharge port 130 of the suction nozzle 100 and discharged to the outside, the sample can be easily sucked and discharged. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

100: suction nozzle
110: Body side
112: slit of the body surface
120: protrusion of the body surface
130: Outlet
140:
142: head face
143: slit of the head face
144: projection on the head surface

Claims (7)

As a suction nozzle for sucking a liquid sample,
A hollow is formed in the nozzle to allow the sample to flow into the nozzle,
The suction nozzle
At least one body surface disposed longitudinally;
A head surface disposed at one end of the body surface; And
And a discharge port formed at the other end of the body surface so as to face the head surface and through which the sample is discharged to the outside,
Wherein one of the body surface and the head surface is a surface
A plurality of protrusions protruding from a surface of the suction nozzle, the plurality of protrusions being in contact with the sample and introducing the sample to the surface of the suction nozzle using a capillary phenomenon; And
And a plurality of slits arranged alternately with the projections and passing through the surface of the suction nozzle to allow the sample reaching the surface of the suction nozzle to pass into the suction nozzle. The method according to claim 1,
Wherein the plurality of slits and the plurality of protrusions are formed on the body surface and are arranged in parallel along a direction crossing the longitudinal direction of the body surface. 3. The method of claim 2,
And the length of the protrusion gradually increases from both ends of the body surface to the center of the body surface. The method according to claim 1,
And the plurality of projections are disposed symmetrically on both sides of the plurality of slits. The method according to claim 1,
Wherein the projection is formed in a needle-like shape. The method according to claim 1,
Wherein the protrusion is made of a hydrophilic material. The method according to claim 1,
A plurality of the projections are arranged side by side so as to protrude outward from an intersection line of the head surface and the body surface,
And a plurality of said slits are disposed alongside said plurality of said projections on said head surface.
KR1020150037642A 2015-03-18 2015-03-18 Suction nozzle KR101683758B1 (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150037642A KR101683758B1 (en) 2015-03-18 2015-03-18 Suction nozzle

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KR20160112282A true KR20160112282A (en) 2016-09-28
KR101683758B1 KR101683758B1 (en) 2016-12-07

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019078676A3 (en) * 2017-10-20 2019-08-08 서강대학교산학협력단 Method and device for transferring nanoparticle monolayer by using capillary tube
US11499893B2 (en) 2017-10-20 2022-11-15 Sogang University Research Foundation Method and device for transferring nanoparticle monolayer by using capillary tube

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
S. J. Lee et. al., 'Liquid-intake flow around the tip of butterfly proboscis', Journal of Theoretical Biology, 348, 2014.02., pp.113-121. *
이승철 외 2인, '나비 펌프 구조와 동적 거동의 in vivo 가시화', 한국가시화정보학회, 제9권, 제4호, 2011, pp.69-73. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019078676A3 (en) * 2017-10-20 2019-08-08 서강대학교산학협력단 Method and device for transferring nanoparticle monolayer by using capillary tube
US11499893B2 (en) 2017-10-20 2022-11-15 Sogang University Research Foundation Method and device for transferring nanoparticle monolayer by using capillary tube

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