UREA SOLUTION SPRAY NOZZLE

• US 20160108838A1
• Filed: 05/29/2014
• Published: 04/21/2016
• Est. Priority Date: 06/04/2013
• Status: Active Grant

• Current Assignee: Japan Ship Machinery And Equipment Association, Yanmar Power Technology Co., Ltd.
• Original Assignee: Japan Ship Machinery And Equipment Association, Yanmar Company Limited (Yanmar Holdings Co., Ltd.)
• Inventors: INOUE, Tsuyoshi
• Granted Patent: US 10,487,758 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B05B 7/0416 with arrangements for mixing one gas and one liquid
• CPC Class Codes: B05B 7/0815 with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
• CPC Class Codes: F01N 2510/00 Surface coverings
• CPC Class Codes: F01N 2590/02 for marine vessels or naval applications
• CPC Class Codes: F01N 2610/02 the substance being ammonia or urea
• CPC Class Codes: F01N 2610/08 with prior mixing of the substances with a gas, e.g. air
• CPC Class Codes: F01N 2610/085 Controlling the air supply
• CPC Class Codes: F01N 2610/1453 Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
• CPC Class Codes: F01N 2610/146 Control thereof, e.g. control of injectors or injection valves
• CPC Class Codes: F01N 2900/06 Parameters used for exhaust control or diagnosing
• CPC Class Codes: F01N 2900/10 said parameters being related to the vehicle or its components
• CPC Class Codes: F01N 3/206 Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents F01N3/2066 takes precedence
• CPC Class Codes: F01N 3/2066 Selective catalytic reduction [SCR]
• CPC Class Codes: F01N 3/208 Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
• CPC Class Codes: F01N 3/22 Control of additional air supply only, e.g. using by-passes or variable air pump drives
• CPC Class Codes: F01N 9/00 Electrical control of exhaust gas treating apparatus monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N11/00; conjoint electrical control of two or more combustion engine functions F02D43/00
• CPC Class Codes: F02D 41/0235 in relation with the state of the exhaust gas treating apparatus control of exhaust gas treating apparatus per se F01N
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

A urea solution spray nozzle maybe provided that can suppress the deposit and growth of urea in the urea solution spray nozzle. A urea solution spray nozzle according to at least one present embodiment is such that urea solution flow paths and gas flow paths and are constituted, and urea solution and gas are mixed and injected from an injection port, and a slit, which is a lateral ejection port, is constituted in such a manner that the gas is ejected in the same direction as the injection direction of the urea solution along surfaces of the urea solution spray nozzle, and a water-repellent coating layer is formed on the surfaces of the urea solution spray nozzle.

Claims

1. A urea solution spray nozzle in which a urea solution flow path and a gas flow path are constituted, and pressurized air that passes through the gas flow path is mixed with urea solution and injected from an injection port,

wherein a branch flow path communicated with the gas flow path is provided, and a lateral ejection port is constituted in such a manner that the pressurized air that passes through the branch flow path is ejected in a same direction as an injection direction of the urea solution along a surface of the urea solution spray nozzle, and

wherein a water-repellent coating layer is formed on the surface of the urea solution spray nozzle, and

wherein the surface of the urea solution spray nozzle is constituted of an inclined plane having a constant tilted angle in such a manner that an outline thereof forms a constant angle with respect to an axial line of the injection port in a predetermined range centering on the injection port.

2. An exhaust purification device for vessels, the exhaust purification device configured to include the urea solution spray nozzle according to claim 1 and a control device,

wherein the control device is configured to be connected to a global positioning system device that detects a present position of the exhaust purification device and configured to store a regulation area map that indicates a regulation area of exhaust,

wherein when the control device obtains the present position detected by the global positioning system device and determines that the present position is disposed in the regulation area of the exhaust based on the regulation area map, the control device controls the pressurized air and the urea solution, which are mixed, to be injected from the urea solution spray nozzle.

3. (canceled)