Spraying apparatus

Patent metadata

Field	Value
Publication number	US-11278923-B2
Application number	US-201916249819-A
Country	US
Kind code	B2
Filing date	Jan 16, 2019
Priority date	Jan 31, 2018
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

A spraying apparatus includes a spraying apparatus main body, a liquid introduction portion, a gas introduction portion, a gas-liquid spout portion, a liquid inlet, a gas inlet, a tubular flow passage, a spout, a flow passage having a taper, a straightener, and a projection portion. The liquid inlet allows a liquid flow to enter a gas-liquid mixer which is a space inside the annular gas introduction portion. The gas inlet allows a gas flow to enter the gas-liquid mixer. The straightener has an opening having an uneven shape provided in the flow passage having the taper. The projection portion is provided in the liquid introduction portion, protrudes to the gas-liquid mixer, and forms the straightener and a straightening outlet.

First claim

What is claimed is:

1. A spraying apparatus comprising:
a spraying apparatus main body that has a liquid flow passage and a gas flow passage;
a liquid introduction portion that is provided at an end portion of the liquid flow passage;
an annular gas introduction portion that is provided at an end portion of the gas flow passage;
a gas-liquid spout portion that covers the liquid introduction portion and the annular gas introduction portion;
a liquid inlet that is provided for communicating with the liquid flow passage at at least one place of the liquid introduction portion and allows a liquid flow to enter a gas-liquid mixer, which is a space inside the annular gas introduction portion;
a gas inlet that is provided for communicating with the gas flow passage at at least one place of the annular gas introduction portion and allows a gas flow to enter the gas-liquid mixer;
a tubular flow passage, which penetrates the gas-liquid spout portion, that mixes the gas flow exited from the gas inlet and the liquid flow exited from the liquid inlet, and allows a gas-liquid mixed fluid in which a liquid is atomized to exit;
a spout that is provided in the gas-liquid spout portion for communicating with the tubular flow passage and spouts the gas-liquid mixed fluid;
a flow passage that is provided in the gas-liquid spout portion and has a taper communicating with the spout;
a straightener provided in the flow passage, the straightener having an opening for noise reduction; and
a projection portion that is provided in the liquid introduction portion, protrudes to the gas-liquid mixer, and forms the straightener and a straightening outlet,
wherein the straightener is provided in the gas-liquid spout portion on a spout side of the gas-liquid mixer to form the straightening outlet,
wherein, along a plane that is orthogonal to a central axis of the spraying apparatus main body that intersects the opening of the straightener, a width of the opening along a line extending from a center of the projection portion radially outward varies around a circumference of the projection portion, and
wherein in a case where the spraying apparatus is cut along an inner surface of the gas-liquid spout portion in a direction intersecting the central axis of the spraying apparatus main body and is viewed from a spraying apparatus main body side, an area ratio of an area of the straightening outlet to an area of the opening of the straightener is greater than 0% and 60% or less, and the area of the straightening outlet is greater than an area of the tubular flow passage.

2. The spraying apparatus of claim 1 ,
wherein in a case where a side on which the spraying apparatus main body is formed is defined as an upstream side and a side on which the spout is formed is defined as a downstream side, the projection portion has a tapered shape from a bottom surface of the projection portion on the upstream side toward a tip portion of the projection portion on the downstream side.

3. The spraying apparatus of claim 1 ,
wherein in the case where the spraying apparatus is cut along the inner surface of the gas-liquid spout portion in the direction intersecting the central axis of the spraying apparatus main body and is viewed from the spraying apparatus main body side, the straightening outlet includes a plurality of triangles disposed on the circumference of the projection portion.

4. The spraying apparatus of claim 1 ,
wherein in the case where the spraying apparatus is cut along the inner surface of the gas-liquid spout portion in the direction intersecting the central axis of the spraying apparatus main body and is viewed from the spraying apparatus main body side, the straightening outlet includes a circular ring on the circumference of the projection portion and a plurality of triangles disposed around the circular ring.

5. The spraying apparatus of claim 1 , wherein the width of the opening along the line extending from the center of the projection portion radially outward continuously varies around the circumference of the projection portion.

6. The spraying apparatus of claim 1 , wherein the straightening outlet is a gap on an upstream side end of the straightener between an inner edge of the opening and the projection portion, and the straightener communicates with the tubular flow passage.

7. A spraying apparatus comprising:
a spraying apparatus main body that has a liquid flow passage and a gas flow passage;
a liquid introduction portion that is provided at an end portion of the liquid flow passage;
an annular gas introduction portion that is provided at an end portion of the gas flow passage;
a gas-liquid spout portion that covers the liquid introduction portion and the annular gas introduction portion;
a liquid inlet that is provided for communicating with the liquid flow passage at at least one place of the liquid introduction portion and allows a liquid flow to enter a gas-liquid mixer, which is a space inside the annular gas introduction portion;
a gas inlet that is provided for communicating with the gas flow passage at at least one place of the annular gas introduction portion and allows a gas flow to enter the gas-liquid mixer;
a tubular flow passage, which penetrates the gas-liquid spout portion, that mixes the gas flow exited from the gas inlet and the liquid flow exited from the liquid inlet, and allows a gas-liquid mixed fluid in which a liquid is atomized to exit;
a spout that is provided in the gas-liquid spout portion for communicating with the tubular flow passage and spouts the gas-liquid mixed fluid;
a flow passage that is provided in the gas-liquid spout portion and has a taper communicating with the spout;
a straightener provided in the flow passage, the straightener having an opening for noise reduction; and
a projection portion that is provided in the liquid introduction portion, protrudes to the gas-liquid mixer, and forms the straightener and a straightening outlet,
wherein the straightener is provided in the gas-liquid spout portion on a spout side of the gas-liquid mixer to form the straightening outlet, and
wherein in a case where the spraying apparatus is cut along an inner surface of the gas-liquid spout portion in a direction intersecting a central axis of the spraying apparatus main body and is viewed from a spraying apparatus main body side, the straightening outlet includes a plurality of triangles disposed on a circumference of the projection portion, an area ratio of an area of the straightening outlet to an area of the opening of the straightener is greater than 0% and 60% or less, and the area of the straightening outlet is greater than an area of the tubular flow passage.

8. The spraying apparatus of claim 7 , wherein the straightening outlet is a gap on an upstream side end of the straightener between an inner edge of the opening and the projection portion, and the straightener communicates with the tubular flow passage.

9. A spraying apparatus comprising:
a spraying apparatus main body that has a liquid flow passage and a gas flow passage;
a liquid introduction portion that is provided at an end portion of the liquid flow passage;
an annular gas introduction portion that is provided at an end portion of the gas flow passage;
a gas-liquid spout portion that covers the liquid introduction portion and the annular gas introduction portion;
a liquid inlet that is provided for communicating with the liquid flow passage at at least one place of the liquid introduction portion and allows a liquid flow to enter a gas-liquid mixer, which is a space inside the annular gas introduction portion;
a gas inlet that is provided for communicating with the gas flow passage at at least one place of the annular gas

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Isomi Akira
• Tabata Daisuke
• Ueda Yuki

Classifications

• B05B7/0416

  with arrangements for mixing one gas and one liquid · CPC title

• B05B7/0458

  the gas and liquid flows being perpendicular just upstream the mixing chamber · CPC title

• B05B7/0483 Primary

  with gas and liquid jets intersecting in the mixing chamber · CPC title

• B05B1/002 Primary

  designed to reduce the generation or the transmission of noise or to produce a particular sound; associated with noise monitoring means · CPC title

• B01F23/21322

  Internal mixer atomization, i.e. liquid and gas are mixed and atomized in a jet nozzle before spraying · CPC title