KR-102963274-B1 - microbubble jet nozzle device for pollutants removal

Abstract

The present invention relates to a microbubble jet nozzle device for cleaning contaminants, comprising: a connecting member connected to a fluid supply unit and providing a flow path for a fluid supplied from the fluid supply unit; a receptacle communicating with the connecting member and receiving the fluid introduced through the connecting member; a plurality of expansion tubes arranged radially in communication with the receptacle, wherein the diameter of the end portion located further from the receptacle is formed to be larger than the diameter of the tip portion, thereby inducing microbubble generation through changes in fluid flow velocity and internal pressure caused by the difference in diameter between the tip portion and the end portion; a discharge tube communicating with each of the expansion tubes and discharging the fluid introduced through each of the expansion tubes; and a housing accommodating the connecting member, the receptacle, the expansion tube, and the discharge tube.

Inventors

• 박형민
• 박주연
• 강예은

Assignees

• 서울대학교산학협력단

Dates

Publication Date

20260511

Application Date

20220816

Claims (7)

1. A connecting member connected to a fluid supply unit and providing a fluid flow path supplied from the fluid supply unit; A receptacle that communicates with the above-mentioned connecting member and receives the fluid flowing in through the above-mentioned connecting member; A plurality of expansion tubes arranged radially in communication with the receptor, wherein the diameter of the terminal end located further from the receptor is formed to be larger than the diameter of the tip end, thereby inducing the generation of microbubbles through changes in fluid flow velocity and internal pressure caused by the difference in diameter between the tip end and the terminal end; A discharge pipe communicating with each of the above expansion pipes to discharge the fluid flowing in through each of the above expansion pipes; and A housing accommodating the above-mentioned connecting member, receptacle, expansion tube, and discharge tube; comprising The above discharge pipe includes a mesh having an opening rate of 20 to 40%, which is embedded in one end adjacent to the above expansion pipe. In the above housing, the leading end to which one end of the connecting member is connected is formed with a smaller diameter than the trailing end, and As each of the plurality of expansion tubes is individually connected between the receptor and the discharge tube, the fluid flowing from the receptor into each of the expansion tubes flows along different paths from the receptor toward the discharge tube, and The above connecting member is connected to the fluid supply unit as a fastener provided at the other end opposite to the one end connected to the housing is fastened to the fluid supply unit, and is made of a flexible material so as to be freely bent while connected to the fluid supply unit. It further includes a circulation pipe that communicates with the above-mentioned receptor and circulates the fluid contained in the above-mentioned receptor, and A microbubble jet nozzle device for cleaning contaminants, characterized in that the above-mentioned circulation tube is formed in the shape of a straight tube with one end closed, provided in multiple numbers, and arranged radially around the center circumference of one surface of the receptacle.
2. In paragraph 1, A microbubble jet nozzle device for cleaning contaminants, characterized in that the diameter of the end portion of the expansion tube is 2.5 to 4 times the diameter of the tip portion.
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6. In paragraph 1, A microbubble jet nozzle device for cleaning contaminants, characterized in that the length of the circulation pipe is 0.5 to 0.9 times the length of the expansion pipe.
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Description

Microbubble jet nozzle device for pollutant removal The present invention relates to a nozzle device, and more specifically, to a microbubble jet nozzle device for cleaning contaminants that enables the smooth removal of contaminants from an object to be cleaned by spraying a fluid containing microbubbles through the rapid generation of a large amount of microbubbles by a non-powered method. Skin, food, clothing, and machine parts can be contaminated by various substances. For example, skin can be contaminated by cosmetics, etc., and food products can be contaminated by microorganisms or pesticide residues, etc. Accordingly, washing is performed to remove contaminants from skin, food, clothing, machine parts, etc. At this time, there was a problem where the removal of contaminants did not meet expectations when washing was performed using ordinary washing water such as tap water. For this reason, cleaning is performed using washing water containing a large amount of bubbles. As bubbles penetrate the object to be cleaned and burst, the pressure generated when the bubbles burst separates contaminants, thereby enhancing cleaning power and enabling more efficient removal of contaminants compared to using ordinary cleaning water. However, ordinary bubbles with a size of mm had a problem in that they were difficult to penetrate into fine areas such as skin pores, and in particular, as shown in FIG. 1, there was a problem in that the cleaning efficiency was reduced as the surface area that could come into contact with contaminants (500) present on the object to be cleaned (600) was reduced due to the significant gap between one of the ordinary bubbles (200') and another. Accordingly, there has recently been an increasing number of cases where washing is performed using washing water containing bubbles, specifically microbubbles with a size of μm . Since microbubbles are extremely fine in size, they can penetrate deep into every nook and cranny of the object to be cleaned, such as the pores of the skin, making the removal of contaminants more efficient. Meanwhile, microbubbles can be generated by various 'microbubble generating devices' as disclosed in Korean Public Patent No. 10-2019-0031012, etc. However, most conventional microbubble generators generated microbubbles in still water by transmitting power through ultrasonic generators placed within a housing. Consequently, the requirement for a power source led to costs and inconveniences associated with its provision and installation. Furthermore, contaminants remaining within the housing after cleaning could affect the object being cleaned during subsequent cleaning processes, causing re-contamination of the object. To address this problem, a 'non-powered microbubble generator' has been proposed, such as one that includes a spiral channel or a single venturi tube with a skirt-shaped cross-section. However, conventional non-powered microbubble generators containing spiral channels had the problem of being cumbersome to manufacture and manage because the structure became complex due to the spiral channels. Furthermore, conventional non-powered microbubble generators, which include a single venturi tube with a skirt-shaped cross-section, had problems such as failing to meet expectations for bubble generation, increased water consumption due to the requirement of a significant amount of water inflow, and reduced durability and airtightness due to the need for an air inlet. For the reasons mentioned above, attempts are being made in this field to develop nozzle devices that not only enhance durability and airtightness but also enable the rapid generation of a large amount of microbubbles using a non-powered method; however, satisfactory results have not been achieved to date. Figure 1 is an example diagram showing the state in which a normal bubble of mm size comes into contact with a contaminant. FIG. 2 is a cross-sectional view showing the internal structure of a microbubble jet nozzle device for cleaning contaminants according to the present invention. FIG. 3 is an exemplary diagram showing a form in which a microbubble jet nozzle device for cleaning contaminants according to the present invention is connected to a fluid supply device. FIG. 4 is an exemplary diagram showing the arrangement of the expansion tube in a microbubble jet nozzle device for cleaning contaminants according to the present invention. FIG. 5 is an exemplary diagram showing a form in which a microbubble jet nozzle device for cleaning contaminants according to the present invention further includes a circulation pipe. FIG. 6 is an exemplary diagram showing another form of a microbubble jet nozzle device for cleaning contaminants according to the present invention, further including a circulation pipe. FIG. 7 is an exemplary diagram showing another form of a microbubble jet nozzle device for cleaning contaminants according to the present invention, further including a circulation pipe. FIG. 8 is