Screw compressor for a utility vehicle

Patent metadata

Field	Value
Publication number	US-11994129-B2
Application number	US-201916355106-A
Country	US
Kind code	B2
Filing date	Mar 15, 2019
Priority date	Sep 21, 2016
Publication date	May 28, 2024
Grant date	May 28, 2024

Abstract

A screw compressor for a utility vehicle has a housing, wherein, in the operationally ready and assembled state of the screw compressor, an oil sump is provided in the housing. A magnet is arranged in the oil sump.

First claim

What is claimed is:

1. A screw compressor for a utility vehicle, comprising:
a housing having a housing body and a rotor housing disposed in the housing body for screws of the screw compressor, wherein, in an operationally ready and assembled state of the screw compressor, an oil sump is provided in the housing body, a baffle plate is arranged in the housing body below the rotor housing, and a magnet formed as a substantially cylindrical disc is arranged in the oil sump below the baffle plate,
an air inlet for feeding air to be compressed to an air filter,
an air feed channel for receiving filtered air from the air filter and supplying the filtered air to screws of the screw compressor,
a valve insert disposed in the air feed channel to regulate supply of the filtered air to said screws, and
a drain plug removably coupled to the housing, wherein the drain plug is movable from a closed position to an open position, wherein an oil outflow opening is closed when the drain plug is in the closed position and wherein the oil outflow opening is opened when the drain plug is in the open position,
wherein the magnet is fastened to the housing by a spacer passing through the magnet, the spacer being composed of a screw bolt and a distancing sleeve pushed onto the screw bolt, and
wherein the magnet is arranged in the housing body and is spaced away from an inner wall of the housing body so as to permit oil to wash completely around the magnet except for a region of the magnet at which the spacer passes through the magnet, wherein the magnet is spaced apart from, and not connected to, the drain plug and/or the oil outflow opening, and wherein the magnet is maintained in the housing body when the drain plug is moved to the open position.

2. The screw compressor as claimed in claim 1 , wherein the screw compressor has no oil filter.

3. The screw compressor as claimed in claim 1 , wherein the baffle plate extends in a horizontal direction and is provided with oil passage slots.

4. The screw compressor as claimed in claim 1 , wherein the drain plug is removably coupled to a bottom wall of the housing, and wherein the magnet is coupled to a side wall of the housing.

Assignees

• Knorr Bremse Systeme Fuer Nutzfahrzeuge Gmbh

Inventors

• Hebrard Gilles
• Marescot Jean-Baptiste
• Mellar Joerg
• Weinhold Thomas

Classifications

• F05C2251/12

  Magnetic properties · CPC title

• F04C2270/24

  Level of liquid, e.g. lubricant or cooling liquid · CPC title

• F04C2270/19

  Temperature · CPC title

• F04C2280/02

  Preventing solid deposits in pumps, e.g. in vacuum pumps with chemical vapour deposition [CVD] processes · CPC title

• F04C2240/30

  Casings or housings · CPC title