Noise reduction type purge control solenoid valve

Patent metadata

Field	Value
Publication number	US-11821391-B2
Application number	US-201715621287-A
Country	US
Kind code	B2
Filing date	Jun 13, 2017
Priority date	Jun 13, 2016
Publication date	Nov 21, 2023
Grant date	Nov 21, 2023

Abstract

A noise reduction type purge control solenoid valve includes a body including a connector that supplies electricity from the exterior; a cover coupled to the body having a fluid inlet and a fluid outlet, and formed with a fluid discharge passage connected to the fluid outlet therein; a solenoid component disposed in the body; and an armature disposed between the solenoid component and the fluid discharge passage and moving upward and downward by the solenoid component to open and close the fluid discharge passage. Further, a noise reduction member is mounted on the armature to reduce noise generated by contact between the fluid discharge passage and the armature. A noise reduction wall protrudes along a circumference of an upper surface of the noise reduction member.

First claim

What is claimed is:

1. A noise reduction type purge control solenoid valve, comprising:
a body including a connector configured to supply electricity from exterior;
a cover coupled to the body having a fluid inlet and a fluid outlet, and formed with a fluid discharge passage connected to the fluid outlet therein;
a solenoid component disposed in the body;
an armature disposed between the solenoid component and the fluid discharge passage and configured to move upward and downward by the solenoid component to open and close the fluid discharge passage;
a noise reduction member mounted on the armature to reduce noise generated by contact between the fluid discharge passage and the armature; and
a noise reduction wall protruding upward from a radially outer end of the noise reduction member along a circumference of an upper surface of the noise reduction member to surround a contact surface where the noise reduction member and the fluid discharge passage are in contact,
wherein the noise reduction wall is formed radially outward from the contact surface,
wherein a noise generated when the fluid discharge passage and the noise reduction member contact each other is obstructed and attenuated by the noise reduction wall before the noise is transmitted to the exterior of the body,
wherein the noise reduction member is formed with a fastening protrusion which protrudes downward from the radially outer end of the noise reduction member, and the armature is formed with a fastening aperture into which the fastening protrusion is inserted to allow the noise reduction member to be mounted on the armature,
wherein a blocking wall is formed at an upper portion of the noise reduction wall, the blocking wall arranged to protrude toward a center of the noise reduction member so as to allow introduction of a fluid but obstruct noise emission,
wherein the noise reduction member, the noise reduction wall, the fastening protrusion, and the blocking wall are integrally formed, and the blocking wall is formed to protrude radially inward from an upper end of the noise reduction,
wherein the noise is attenuated in a space surrounded by the noise reduction member, the noise reduction wall, and the blocking wall, and
wherein the blocking wall is spaced apart from an exterior surface of the fluid discharge passage, and the fluid is disposed to be introduced between the blocking wall and the outer surface of the fluid discharge passage.

2. The noise reduction type purge control solenoid valve of claim 1 , wherein the solenoid component includes:
a solenoid port disposed in the body;
a bobbin component disposed in the solenoid port;
a solenoid core positioned at the center of the bobbin component;
a coil wound around an exterior portion of the bobbin component; and
a plate coupled to an upper portion of the bobbin component, disposed to face the armature, and magnetized when power is applied to the coil.

3. The noise reduction type purge control solenoid valve of claim 2 , wherein the solenoid component further includes a spring inserted into a spring accommodating portion formed at a lower portion of the armature and supported by the solenoid core to elastically support the armature.

4. The noise reduction type purge control solenoid valve of claim 1 , wherein a plurality of protrusions for dispersing noise are formed on an interior surface of the noise reduction wall.

5. The noise reduction type purge control solenoid valve of claim 1 , further comprising:
a ring filter disposed in the cover and configured to reduce noise generated when a fluid is introduced through the fluid inlet.

Assignees

• Hyundai Kefico Corp

Inventors

• Lee Ahn Hee

Classifications

• F02M25/0836 Primary

  Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold · CPC title

• F02M2025/0845

  Electromagnetic valves · CPC title

• F02M2200/09

  Fuel-injection apparatus having means for reducing noise · CPC title

• F16K31/06 Primary

  using a magnet {, e.g. diaphragm valves, cutting off by means of a liquid} · CPC title

• F16K47/02

  for preventing water-hammer or noise · CPC title