# US 11,992,854 B2 · Air mixing nozzle tip structure

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- Number: US 11,992,854 B2
- Document ID: US11992854B2
- Status: Granted
- Kind: B2
- Application number: 17/637,526
- Filed: 2021-09-27
- Published: 2024-02-15
- Granted: 2024-05-28
- Earliest claimed: 2020-11-18
- Assignees: INUS Co., Ltd.
- Applicants: Inus Co., Ltd.
- Inventors: Myung Hwan Kim
- Web page: https://patentgrep.com/patent/US11992854B2

## CPC

- B05B 7/0425: {without any source of compressed gas, e.g. the air being sucked by the pressurised liquid}
- A61H 9/0021: {Hydraulic massage}
- B05B 7/0483: {with gas and liquid jets intersecting in the mixing chamber}
- B05B 7/0876: {to form parallel jets constituted by a liquid or a mixture containing a liquid (B05B7/0884, B05B7/0892 take precedence)}
- E03D 9/08: Devices in the bowl producing upwardly-directed sprays; Modifications of the bowl for use with such devices (showers A47K3/28; bathing devices for special therapeutic or hygienic purposes A61H33/00, for specific parts of the body A61H35/00 ){; Bidets; Combinations of bowls with urinals or bidets; Hot-air or other devices mounted in or on the bowl, urinal or bidet for cleaning or disinfecting}
- A61H 2205/086: Buttocks
- E03C 1/084: Jet regulators with aerating means
- B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D)
- A61H: PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY (electrotherapy, magnetotherapy, radiation therapy or ultrasound therapy A61N)
- E03D: WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03C: DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER (not connected to either water-supply main or to waste pipe A47K; devices of the kind used in the ground E03B, E03F); SINKS

## Abstract

Proposed is an air mixing nozzle tip structure which improves productivity while simplifying the structure by being configured so that air is introduced through an air mixing inlet and discharged together with wash water, improves cleaning power while realizing a massage effect because fine water droplets are formed in the process that wash water and air are combined and discharged, controls the inlet amount of air by forming the air mixing inlet on one side or each of opposite sides of a nozzle tip cover or by adjusting the cross-sectional size of the air mixing inlet, and promotes product stability by providing an air supply passage at the rear of the air mixing inlet so that the air introduced through the air mixing inlet is smoothly discharged to a wash water ejection hole through an air guide.

## Claims

### Claim 1

An air mixing nozzle tip structure, comprising: a nozzle tip body in which a wash water moving hole and a bidet water moving hole for movement of wash water and bidet water are formed therethrough, and coupled to a nozzle main body; and a nozzle tip cover welded to an upper part of the nozzle tip body, the nozzle tip cover having a wash water ejection hole and a bidet water ejection hole that are formed to communicate with the wash water moving hole and the bidet water moving hole, respectively, so that the wash water and the bidet water are sprayed, the nozzle tip structure further comprising:
an air mixing inlet formed in the nozzle tip cover, communicating with the wash water ejection hole to introduce external air is mixed;
an air guide formed to be protruded on an upper portion of the nozzle tip body, adjacent to the wash water moving hole, and allowing the air introduced through the air mixing inlet to be ejected together with the wash water through the wash water ejection hole; and
an air supply passage formed to extend backward inside the nozzle tip cover from the air mixing inlet and facilitating an inflow of air to the air guide,
wherein the air mixing inlet is formed on one side or each of opposite sides of the nozzle tip cover to control an inlet amount of air,
the air guide is formed in a circular shape along an edge of the wash water moving hole, with a guide surface being formed on an outer surface thereof in a direction toward the air supply passage to be inclined at a predetermined angle to guide the inflow of air, and to control the inlet amount of air according to the angle of the guide surface, wherein the air guide is located inside the wash water ejection hole to prevent the wash water from flowing into the air mixing inlet and blocking the air supply passage, a distance between an upper surface of the air guide and a final water outlet surface of the wash water ejection hole is secured at least 2 mm to prevent irregularity of the inflow of air, and a wing part extending in a width direction of the nozzle tip body is formed on each side of the air guide, and coupling grooves are formed on the inside of the nozzle tip cover to correspond to the wing part, and
the air supply passage is formed with a larger cross-sectional area than the air mixing inlet to increase an inflow speed of the air introduced into the air mixing inlet.