# US 9,579,943 B2 · Compressed air supply installation and pneumatic system

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,579,943 B2
- Document ID: US9579943B2
- Status: Granted
- Kind: B2
- Application number: 14/526,016
- Filed: 2014-10-28
- Published: 2015-02-19
- Granted: 2017-02-28
- Earliest claimed: 2010-12-16
- Assignees: WABCO GmbH
- Applicants: WABCO GmbH
- Inventors: Dieter Frank; Frank Meissner
- Web page: https://patentgrep.com/patent/US9579943B2

## CPC

- B60G 17/0523: {Regulating distributors or valves for pneumatic springs}
- B60G 17/052: Pneumatic spring characteristics (B60G17/048 takes precedence {; valves per se F16K})
- F04B 17/03: driven by electric motors
- F04B 39/16: Filtration; Moisture separation
- F16K 31/0651: {the fluid passing through the solenoid coil}
- F16K 31/0658: {Armature and valve member being one single element}
- F16K 31/0675: {Electromagnet aspects, e.g. electric supply therefor}
- B01D 53/261: {by adsorption}
- B60G 2202/152: Pneumatic spring
- B60G 2300/07: Off-road vehicles
- B60G 2500/2012: Open systems
- B60G 2500/2021: Arrangement of valves
- B60G 2500/2044: Air exhausting valves
- B60G 2600/26: Electromagnets; Solenoids
- B60G 2600/66: Humidifying or drying means
- Y10T 137/86051: Compressed air supply unit
- B60G: VEHICLE SUSPENSION ARRANGEMENTS (air-cushion vehicles B60V; {cycle suspensions B62K25/00})
- F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F)
- 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)}
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A compressed air supply installation for operating a pneumatic installation, especially an air suspension installation of a vehicle, includes an air supply unit and an air compression unit for supplying a compressed air supply unit with compressed air, a pneumatic connection, especially a bleeding line, comprising a bleeding valve and a bleeding port for bleeding air, and a pneumatic connection, especially a compressed air supply line having an air drier and a compressed air port for supplying the pneumatic installation with compressed air The air drier has a drier container through which compressed air can flow and which contains a desiccant. The drier container has a wall forming a desiccant-free recess, and at least part of the bleeding valve system is arranged in the recess.

## Claims

### Claim 1

A compressed air supply system for operating a pneumatic system, the compressed air supply system comprising:
an air supply and an air compressor configured to supply a compressed air supply with compressed air;
a venting line having a vent valve arrangement and a vent port configured to vent air; and
a compressed air supply line having an air dryer and a compressed air connection configured to supply the pneumatic system with compressed air, wherein the air dryer includes a drying container containing a drying agent through which compressed air can flow, wherein the drying container includes a wall defining a recess free from the drying agent and the vent valve arrangement is disposed at least partly in the recess, and wherein the vent valve arrangement is a controllable solenoid valve arrangement having a primary valve, a secondary valve, and a solenoid part, the primary valve and the secondary valve being activatable by a common controller of the solenoid part acting on both.

### Claim 2

A compressed air supply system for operating a pneumatic system, the compressed air supply system comprising:
an air supply and an air compressor configured to supply a compressed air supply with compressed air;
a venting line having a vent valve arrangement and a vent port configured to vent air;
a compressed air supply line having an air dryer and a compressed air connection configured to supply the pneumatic system with compressed air; and
a housing arrangement, wherein at least one of (i) a first section of the housing arrangement includes a motor and (ii) a second section includes the air compressor drivable by the motor and (iii) a third section connected to the second section via a pressure sources interface includes the air dryer and the vent valve arrangement, wherein the air dryer includes a drying container containing a drying agent through which compressed air can flow, wherein the drying container includes a wall defining a recess free from the drying agent and the vent valve arrangement is disposed at least partly in the recess, wherein the drying container forms part of the housing arrangement, and wherein the drying container includes a cover having a venting section at least partially divided into pneumatic lines.

### Claim 3 (depends on 2)

The compressed air supply system as claimed in claim 2, wherein the venting section of the drying container cover is at least partially divided into pneumatic lines by a single molded seal.

### Claim 4

A compressed air supply system for operating a pneumatic system, the compressed air supply system comprising:
an air supply and an air compressor configured to supply a compressed air supply with compressed air;
a venting line having a vent valve arrangement and a vent port configured to vent air; and
a compressed air supply line having an air dryer and a compressed air connection configured to supply the pneumatic system with compressed air, wherein the air dryer includes a drying container containing a drying agent through which compressed air can flow, wherein the drying container includes a wall defining a recess free from the drying agent and the vent valve arrangement is disposed at least partly in the recess, wherein the drying container comprises a first chamber, wherein the recess is disposed in the drying container adjacent the first chamber, and wherein the drying agent is disposed in the first chamber and at least partly surrounds the recess.

### Claim 5 (depends on 4)

The compressed air supply system as claimed in claim 4, wherein the vent valve arrangement includes a valve housing formed at least partially by at least one of the wall and a casing tube.

### Claim 6 (depends on 4)

The compressed air supply system as claimed in claim 4, wherein the vent valve arrangement is a controllable solenoid valve arrangement having a solenoid part and a pneumatic part, at least one of the solenoid part and the pneumatic part being at least partially arranged in the recess.

### Claim 7 (depends on 4)

The compressed air supply system as claimed in claim 4, wherein the vent valve arrangement is a controllable solenoid valve arrangement configured for direct connection of a compressed air volume from a free space without any fittings.

### Claim 8 (depends on 4)

The compressed air supply system as claimed in claim 4, wherein the vent valve arrangement is a controllable solenoid valve arrangement having a single armature.

### Claim 9 (depends on 4)

The compressed air supply system as claimed in claim 4, wherein the vent valve arrangement is a solenoid valve arrangement including at least one of (i) an elastomeric valve seat and (ii) one of an armature and a valve seat made of metal.

### Claim 10 (depends on 4)

The compressed air supply system as claimed in claim 4, wherein the recess is arranged substantially symmetrically with respect to an axis of the drying container.

### Claim 11 (depends on 10)

The compressed air supply system as claimed in claim 10, wherein the recess is arranged at least one of substantially parallel and substantially coaxial to the axis of the drying container.

### Claim 12 (depends on 4)

The compressed air supply system as claimed in claim 4, wherein the recess connects to a free space without any fittings upstream of the vent valve arrangement, the free space and the vent valve arrangement being arranged substantially coaxially to an axis of the drying container.

### Claim 13 (depends on 4)

The compressed air supply system as claimed in claim 4, further comprising a housing arrangement, wherein at least one of (i) a first section of the housing arrangement includes a motor and (ii) a second section includes the air compressor drivable by the motor and (iii) a third section connected to the second section via a pressure sources interface includes the air dryer and the vent valve arrangement, and wherein the drying container forms part of the housing arrangement.

### Claim 14 (depends on 4)

The compressed air supply system as claimed in claim 4, wherein the pneumatic system is a vehicle air suspension system.

### Claim 15 (depends on 4)

A vehicle air suspension system comprising the compressed air supply system as claimed in claim 4.