# US 2017/0282191 A1 · Solenoid valve

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- Number: US 2017/0282191 A1
- Document ID: US20170282191A1
- Status: Published application
- Kind: A1
- Application number: 15/266,278
- Filed: 2016-09-15
- Published: 2017-10-05
- Earliest claimed: 2016-03-29
- Assignees: Hyundai Motor Company; Kia Motors Corporation
- Applicants: Hyundai Motor Company; Kia Motors Corporation
- Inventors: June Ho LEE; Youngchul KIM
- Web page: https://patentgrep.com/patent/US20170282191A1

## CPC

- B03C 1/30: Combinations with other devices, not otherwise provided for
- B03C 1/0335: {using coils}
- B03C 1/23: with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp
- B03C 1/286: {disposed at the inner circumference of a recipient, e.g. magnetic drain bolt}
- F16K 11/07: with cylindrical slides
- F16K 31/0613: {with cylindrical slides}
- F16K 31/0675: {Electromagnet aspects, e.g. electric supply therefor}
- B03C 2201/18: Magnetic separation whereby the particles are suspended in a liquid
- B03C 2201/30: for use in or with vehicles
- B03C: MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS (separating isotopes B01D59/00; combinations of magnetic or electrostatic separation with separation of solids by other means B03B, B07B)
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}

## Abstract

A solenoid valve includes: a magnetic force generating coil generating an electromagnetic force; a valve spool reciprocated depending on an electromagnetic force generated from the magnetic force generating coil; a holder having the valve spool inserted into a hollow portion of the holder and forming a plurality of ports opened and closed depending on the reciprocating motion of the valve spool; a foreign material collecting coil collecting a foreign material when power is applied to the magnetic force generating coil to serve as an electromagnet; and a foreign material outlet port formed in the holder and discharging the foreign material collected in the foreign material collecting coil when the supply of power to the foreign material collecting coil is released to outside.

## Claims

### Claim 1

A solenoid valve, comprising:
a magnetic force generating coil generating an electromagnetic force;
a valve spool reciprocating depending on the electromagnetic force generated from the magnetic force generating coil;
a holder having the valve spool inserted into a hollow portion of the holder, the holder forming a plurality of ports that are opened and closed depending on the reciprocating motion of the valve spool;
a foreign material collecting coil collecting a foreign material when power is supplied to the magnetic force generating coil to serve as an electromagnet; and
a foreign material outlet port formed in the holder and discharging the foreign material collected in the foreign material collecting coil when the supply of power to the foreign material collecting coil is released to outside.

### Claim 2 (depends on 1)

The solenoid valve of claim 1, further comprising:
a holder part including the holder and the valve spool;
a magnetic part including the magnetic force generating coil and a plunger which reciprocates by the electromagnetic force generated from the magnetic force generating coil; and
a core part forming a boundary between the holder part and the magnetic part,
wherein the valve spool is pushed by the plunger when power is supplied to the magnetic force generating coil and returns to an original position by an elastic member when the supply of power to the magnetic force generating coil is released.

### Claim 3 (depends on 2)

The solenoid valve of claim 2, wherein:
the foreign material collecting coil is interposed between the core part and the holder, and the foreign material outlet port is formed between the foreign material collecting coil and the core part.

### Claim 4 (depends on 2)

The solenoid valve of claim 2, further comprising:
a discharge channel discharging oil infiltrated into the magnetic part to the outside,
wherein the foreign material outlet port is disposed between the foreign material collecting coil and the discharge channel.

### Claim 5 (depends on 1)

The solenoid valve of claim 1, wherein the plurality of ports include:
an oil inlet port formed to supply oil into the holder, the oil inlet part selectively opened and closed depending on the reciprocating motion of the valve spool;
an oil outlet port formed to discharge the oil in the holder, the oil outlet port selectively opened and closed depending on the reciprocating motion of the valve spool; and
a control port always opened to discharge the oil supplied through the oil inlet port, and
the oil outlet port is closed when the oil inlet port is opened, and the oil outlet port is opened when the oil inlet port is closed.

### Claim 6 (depends on 5)

The solenoid valve of claim 5, wherein:
the foreign material collecting coil is disposed between the foreign material outlet port and the oil outlet port.