# US 10,766,001 B2 · Aerator apparatus and air diffusion apparatus comprising same

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- Number: US 10,766,001 B2
- Document ID: US10766001B2
- Status: Granted
- Kind: B2
- Application number: 15/764,141
- Filed: 2016-09-30
- Published: 2018-09-27
- Granted: 2020-09-08
- Earliest claimed: 2015-09-30
- Assignees: Lotte Chemical Corporation
- Applicants: Lotte Chemical Corporation
- Inventors: Young Lim Koo; Hyung Wook Ahn; Gyu Hong Min
- Web page: https://patentgrep.com/patent/US10766001B2

## CPC

- B01D 61/08: Apparatus therefor
- B01D 61/20: Accessories; Auxiliary operations
- B01D 65/08: Prevention of membrane fouling or of concentration polarisation
- C02F 1/44: by dialysis, osmosis or reverse osmosis {(general membrane separation processes B01D61/00, membrane modules B01D63/00, electrodialysis C02F1/4693, combination of membrane modules and bioreactors C02F3/1268)}
- C02F 3/20: using diffusers
- B01D 65/02: Membrane cleaning or sterilisation {; Membrane regeneration}
- B01D 2313/26: Specific gas distributors or gas intakes
- B01D 2315/06: Submerged-type; Immersion type
- B01D 2321/185: Aeration
- C02F 3/1273: {Submerged membrane bioreactors}
- C02F 2303/16: Regeneration of sorbents, filters
- Y02W 10/10: Biological treatment of water, waste water, or sewage
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)
- Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

## Abstract

An aerator apparatus including a housing having an inner cavity formed therein, which includes at least one side wall and an upper surface portion connected to the at least one side wall. Additionally, the aerator apparatus includes a first partition wall formed inside the inner cavity and extends from a first lower end to a first upper end to form a first cavity portion and a second cavity portion. Furthermore, a second partition wall is formed between the first partition wall and the first side wall inside the inner cavity, and is extended from a second upper end to a second lower end to form a first chamber and a second chamber in the second cavity portion.

## Claims

### Claim 1

An aerator comprising:
a housing having an inner cavity and comprising at least one side wall and an upper surface connected to the at least one side wall;
a first partition formed in the inner cavity and extending from a first lower end to a first upper end to define a first cavity and a second cavity; and
a second partition formed between the first partition and a first side wall in the inner cavity and extending from a second upper end to a second lower end to form a first chamber and a second chamber in the second cavity,
wherein the housing comprises an outlet communicating with the second chamber, the first upper end of the first partition is spaced apart from the upper surface to form a first opening such that the first cavity communicates with the second cavity through the first opening, the at least one side wall comprises the first side wall and a second side wall opposite the first side wall, the first lower end of the first partition is connected to the first side wall through a lower surface, the second side wall is connected to the upper surface through a first connecting surface, the second partition is connected to the upper surface through a second connecting surface, the first chamber and the second chamber communicate with each other under the second lower end of the second partition, and at least one of the first connecting surface and the second connecting surface is a planar surface, a curved surface, or a polygonal surface.

### Claim 2 (depends on 1)

The aerator according to claim 1, wherein the first connecting surface is a curved surface, and the curved surface has a minimum radius of curvature r1 satisfying Equation 1:
a
4
≤
r
1
≤
a
where a denotes a distance between the second side wall and the first partition.

### Claim 3 (depends on 1)

The aerator according to claim 1, wherein the second connecting surface is a curved surface, the curved surface has a minimum radius of curvature r2 satisfying Equation 2:
b
3
≤
r
2
≤
b
where b denotes a distance between the first partition and the second partition.

### Claim 4 (depends on 1)

The aerator according to claim 1, wherein at least one of the first connecting surface and the second connecting surface is a polygonal surface.

### Claim 5 (depends on 1)

The aerator according to claim 1, wherein the first connecting surface is a planar surface connecting the second side wall to the upper surface, a distance x1 between the second side wall and a point at which an extension of the second side wall joins an extension of the upper surface satisfies Equation 3, and a distance x2 between the upper surface and the point satisfies Equation 4:
a
4
≤
x
1
≤
a
〈
Equation
⁢
⁢
3
〉
a
4
≤
x
2
≤
a
〈
Equation
⁢
⁢
4
〉
where a is a distance between the second side wall and the first partition.

### Claim 6 (depends on 1)

The aerator according to claim 1, wherein the second connecting surface is a planar surface connecting the upper surface to the second partition, a distance x3 between the upper surface and a point at which an extension of the upper surface joins an extension of the second partition satisfies Equation 5, and a distance x4 between the second partition and the point satisfies Equation 6:
b
3
≤
x
3
≤
b
〈
Equation
⁢
⁢
5
〉
b
3
≤
x
4
≤
b
〈
Equation
⁢
⁢
6
〉
where b denotes a distance between the first partition and the second partition.

### Claim 7 (depends on 1)

The aerator according to claim 1, wherein the first partition is connected to the lower surface through a third connecting surface, the lower surface is connected to the first side wall through a fourth connecting surface, and at least one of the third connecting surface and the fourth connecting surface is a planar surface, a curved surface, or a polygonal surface.

### Claim 8 (depends on 7)

The aerator according to claim 7, wherein the third connecting surface is a curved surface comprising a minimum radius of curvature r3 satisfying Equation 7, and the fourth connecting surface is a curved surface comprising a minimum radius of curvature r4 satisfying Equation 8:
c
4
≤
r
3
≤
c
〈
Equation
⁢
⁢
7
〉
0
≤
r
4
≤
3
4
⁢
c
〈
Equation
⁢
⁢
8
〉
where c denotes a distance between the first partition and the first side wall.

### Claim 9 (depends on 7)

The aerator according to claim 7, wherein the third connecting surface is a planar surface connecting the first partition to the lower surface; a distance x5 between the first partition and a point at which an extension of the first partition joins an extension of the lower surface satisfies Equation 9; a distance x6 between the lower surface and the point satisfies Equation 10; the fourth connecting surface is a planar surface connecting the lower surface to the first side wall, a distance x7 between the lower surface and a point at which an extension of the lower surface joins an extension of the first side wall satisfies Equation 11;
and a distance x8 between the first side wall and the point satisfies Equation 12:
c
4
≤
x
5
≤
c
〈
Equation
⁢
⁢
9
〉
c
4
≤
x
6
≤
c
〈
Equation
⁢
⁢
10
〉
0
≤
x
7
≤
3
4
⁢
c
〈
Equation
⁢
⁢
11
〉
0
≤
x
8
≤
3
4
⁢
c
〈
Equation
⁢
⁢
12
〉
where c denotes a distance between the first partition and the first side wall.

### Claim 10 (depends on 1)

The aerator according to claim 1, wherein the housing further comprises an inlet communicating with the first cavity.

### Claim 11 (depends on 1)

The aerator according to claim 1, wherein the aerator comprises the inner cavity separated into two or more.

### Claim 12 (depends on 1)

An air diffuser comprising:
the aerator according to claim 1; and
an air diffusion pipe for discharging air through an air diffusion hole.

### Claim 13 (depends on 12)

The air diffuser according to claim 12, wherein the air diffusion pipe is placed in the first cavity of the housing such that the air discharged through the air diffusion hole is discharged from the aerator through the outlet after sequentially passing through the first cavity, the first chamber, and the second chamber.

### Claim 14 (depends on 12)

The air diffuser according to claim 12, wherein the aerator further comprises an inlet communicating with the first cavity, and the air diffusion pipe penetrates the aerator through the inlet.