A device that dissolves oxygen from the atmosphere into a liquid.

Abstract

The present invention provides a device with a simple configuration that efficiently dissolves atmospheric oxygen into a liquid. [Solution] The apparatus comprises a liquid injection section for pouring liquid, and a bent hollow pipe having an upper vertical pipe section, a lower vertical pipe section, and a horizontal pipe section connecting them. When the internal cross-sectional area of ​​the horizontal pipe section is 1a' and the cross-sectional area of ​​the liquid flowing inside the horizontal pipe section is 1b', the condition 1 / 5 ≤ 1b' / 1a' ≤ 2 / 3 is satisfied. Within this range, a cavity is formed in the horizontal pipe section where the mixed flow and the inner wall of the bent hollow pipe form the outer circumference. Bubbles are stored in the cavity, and repeated movement of bubbles between the cavity and the mixed flow promotes the dissolution of oxygen into the liquid.

Description

Technical Field

[0001] The present invention relates to an apparatus for dissolving atmospheric oxygen in a liquid. In particular, the present invention relates to an apparatus for dissolving atmospheric oxygen in a liquid, which injects a liquid from a liquid injection site into a bent hollow pipe to form a mixed flow containing bubbles and flowing, and promotes the storage and movement of the bubbles and enhances oxygen dissolution according to the relationship between the mixed flow and the inner wall of the bent hollow pipe.

Background Art

[0002] Conventionally, as means for dissolving oxygen in a liquid, air supply by a diffuser, a fine bubble generator, impeller stirring, water spraying, etc. have been used.

[0003] However, these means have problems such as the apparatus being likely to be large-scale, the consumption power and the burden of maintenance management being large, and the performance being likely to deteriorate due to clogging or the like.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the present invention is to provide an apparatus that can efficiently dissolve atmospheric oxygen in a liquid while having a simple configuration.

Means for Solving the Problems

[0006] The apparatus of the present invention includes a liquid injection site for injecting a liquid and a bent hollow pipe having a bent portion. The bent hollow pipe has an upper vertical pipe portion, a lower vertical pipe portion, and a horizontal pipe portion communicating these.

[0007] When the internal cross-sectional area of ​​the horizontal pipe is 1a' and the cross-sectional area of ​​the liquid flowing inside the horizontal pipe is 1b', the following equation is satisfied.

number

[0008] Within the range satisfying the above equation 1, a cavity is formed in the horizontal pipe section, with the mixed flow and the inner wall of the bent hollow pipe forming the outer circumference. Bubbles are stored in the cavity, and repeated movement of bubbles between the cavity and the mixed flow promotes the dissolution of oxygen into the liquid. In this specification, "storage" refers to the state in which bubbles accumulate and remain in the cavity. [Effects of the Invention]

[0009] According to the present invention, by setting the ratio of the flow cross-sectional area 1b' to the internal cross-sectional area 1a' of the horizontal pipe section to a predetermined range, cavities are more easily formed within the horizontal pipe section, and air bubbles are stored within these cavities.

[0010] Furthermore, the repeated movement of bubbles between the cavity and the mixed flow promotes contact between the bubbles and the liquid, allowing the oxygen within the bubbles to dissolve efficiently into the liquid. [Brief explanation of the drawing]

[0011] [Figure 1] A cross-sectional view of a bent hollow pipe is shown. [Figure 2] The cross-section and flow characteristics of a bent hollow pipe are shown in general. [Figure 3] This diagram shows a schematic representation of the cavities and air bubble storage formed within a bent hollow pipe. [Figure 4] This shows the relationship between the internal cross-sectional area 1a' of the horizontal pipe section and the cross-sectional area 1b' of the liquid flowing inside the horizontal pipe section. [Modes for carrying out the invention]

[0012] Embodiments of the present invention will be described below with reference to the drawings.

[0013] As shown in FIG. 2, the apparatus for dissolving oxygen in the atmosphere into the liquid of the present invention includes a liquid injection part 1 and a bent hollow pipe 2. The bent hollow pipe 2 has an upper vertical pipe part, a lower vertical pipe part, and a horizontal pipe part communicating these two parts.

[0014] The liquid 1e injected from the liquid injection part 1 flows while taking in gas in the bent hollow pipe 2, forming a mixed flow in which the liquid and bubbles are mixed.

[0015] As shown in FIG. 4, let the inner cross-sectional area of the horizontal pipe part be 1a′ and the cross-sectional area of the liquid flowing in the horizontal pipe part be 1b′.

[0016] In the present invention, the ratio of 1b′ to 1a′ is set to satisfy the above-mentioned number 1.

[0017] By setting it within this range, the flow state in the horizontal pipe part becomes a state accompanied by cavity formation and bubble storage / movement.

[0018] Within the range satisfying the above-mentioned number 1, as shown in FIG. 3, a cavity is formed in the horizontal pipe part, where the mixed flow and the inner wall of the bent hollow pipe form the outer periphery.

[0019] Bubbles are stored in the cavity, and a state where bubbles are continuously supplied and moved between the cavity and the mixed flow occurs.

[0020] Thereby, the contact between the liquid and the bubbles in the mixed flow is promoted, and the oxygen in the bubbles is efficiently dissolved into the liquid.

Explanation of Reference Numerals

[0021] 1... Liquid injection part 1a... Liquid injection port 1b... Central position below the liquid injection part 1c... Central position above the liquid injection part 1d... Central axis of the liquid injection part 1f... Horizontal line at the central position above the liquid injection part 1e... Liquid 1g... Horizontal line at the liquid collision position α‥Liquid injection angle 1i... Mixed flow surrounding flow 1h‥Mixed flow mainstream 1j... Mixed flow surrounding flow 2. Bent hollow pipe 2a... Upper vertical pipe outer shell 2b... Upper vertical pipe outer shell 2c... Horizontal pipe bottom 2d... Horizontal pipe ceiling 2e...Lower vertical pipe outer shell 2f...Lower vertical pipe outer shell 2h...Horizontal line at position 4a θ...Angle between the horizontal line 2h and the outer wall of the upper vertical pipe enclosure 2a 2i‥Cavity 2j‥Cavity 2k‥Cavity 3. Top of the inner wall of the upper vertical pipe outer casing 4. Inside the joint between the upper vertical pipe outer shell and the horizontal pipe. 4a...Outer side of the joint between the upper vertical pipe casing and the horizontal pipe 5. Extend the bent hollow pipe position 12 vertically downwards to the position where it meets the bottom of the horizontal pipe. 6. Inside of the joint between the horizontal pipe and the lower vertical pipe outer casing. 7. Bottom of the inner wall of the outer casing of the lower vertical pipe 8. Bottom of the inner wall of the outer casing of the lower vertical pipe 9... The position where the horizontal pipe position 6 is extended horizontally to the left and hits the inner wall of the lower vertical pipe outer casing. 10. Inside the joint between the lower vertical pipe outer shell and the horizontal pipe. 11... Extend the lower vertical pipe position 6 upwards to the position where it meets the horizontal pipe. 12. Inside of the joint between the horizontal pipe and the upper vertical pipe outer casing. 13. Top of the inner wall of the upper vertical pipe outer casing 14. Liquid 1e impacts the inner wall of the upper vertical pipe. 15... The position where the main mixed flow 1h collides with the bottom of the horizontal pipe. 16. Position where the lower flow 21 collides with the inner wall of the upper vertical pipe outer casing 2a. 17. Position where the mid-layer flow 23 collides with the inner wall of the lower vertical pipe outer casing 2f. 18... The position where the lower flow 25 collides with the horizontal pipe ceiling. 19. Upper current 20‥Middle flow 21‥Lower flow 19′... Upper flow released into space 20'...Mid-layer flow released into space 21'...Lower flow released into space 22. Upper layer flow 23‥Middle flow 24‥Lower flow 24'... Flow separated and detached from the lower flow 24. 24′′...a flow that has separated and detached from the lower flow 24. 25‥Lower flow 26. Upper layer flow 25'...Lower flow released into space 26'... Upper flow released into space 27. Flow discharged from the opening at the bottom of the vertical pipe below the bent hollow pipe 2. 40. Air bubbles accumulating in cavity 2i 41. Air bubbles accumulating in cavity 2j 42. Air bubbles accumulating in the 2k cavity L...The horizontal distance between the lower central position 1b of the liquid injection point and the inner wall of the upper vertical pipe outer casing 2b. H3...The vertical distance between the point of impact 14 on the inner wall of the upper vertical pipe outer casing 2b of liquid 1e and the top 13 of the inner wall of the upper vertical pipe outer casing 2b. H4...The vertical distance between the lower central position 1b of the liquid injection point and the top of the inner wall 13 of the upper vertical pipe outer casing 2b. 2'...Outer casing of the horizontal pipe of the bent hollow pipe 2 1a'...Internal cross-sectional area of ​​a bent hollow pipe 1b'...Cross-sectional area of ​​the liquid flowing through the hollow section inside a bent hollow pipe.

Claims

1. A device for dissolving atmospheric oxygen in a liquid, comprising a liquid injection section for injecting liquid and a bent hollow pipe having a bent section, wherein the bent hollow pipe has an upper vertical pipe section, a lower vertical pipe section and a horizontal pipe section connecting them, and when the internal cross-sectional area of ​​the horizontal pipe section is 1a' and the cross-sectional area of ​​the liquid flowing inside the horizontal pipe section is 1b', the equation 1 is satisfied. [Math 1]

2. The apparatus according to claim 1, wherein, within the range satisfying the above equation 1, a cavity is formed in the horizontal pipe portion, the mixed flow and the inner wall of the bent hollow pipe forming the outer circumference, bubbles are stored in the cavity, and the continuous movement of bubbles between the cavity and the mixed flow promotes the dissolution of oxygen into the liquid.

Images