Intake box with sound-damping properties for an air supply system in a compression arrangement

Patent metadata

Field	Value
Publication number	US-9903390-B2
Application number	US-201314389778-A
Country	US
Kind code	B2
Filing date	Apr 4, 2013
Priority date	Apr 5, 2012
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

An intake box of an air supply system in a compressor arrangement, having an intake grill and an air intake pipe arranged on the compressor side, wherein the intake grill and the air intake pipe are arranged between a lower lid and an upper lid, wherein, in addition, a sound damping box for minimizing noise emissions is arranged between the intake grill and the air intake pipe, wherein the longitudinal dimension and width dimension of the sound damping box are each at least three times as large as the depth dimension of the sound damping box.

First claim

The invention claimed is:

1. An air intake box of an air supply system in a compressor arrangement, the intake box comprising:
an intake grille;
an air intake pipe arranged in proximity to a compressor;
a lower cover; and
an upper cover,
wherein the intake grille and the air intake pipe are arranged between the lower cover and the upper cover,
wherein the compressor arrangement further comprises a sound damping box that minimizes noise emission and is arranged between the intake grille and the air intake pipe,
wherein length and width dimensions of the sound damping box are each at least three times as large as a depth dimension of the sound damping box,
wherein sound waves originating from the air intake pipe, starting from the compressor, propagate through the sound damping box,
wherein the sound damping box has at least one insulating panel on each of the lower cover and the upper cover, and
wherein arrangement of the insulating panels over a large area in the sound damping box reduces the sound level of the sound waves.

2. The air intake box of claim 1 , further comprising an air guide that minimizes noise emission and is arranged between the intake grille and the sound damping box, such that an inflow region is created between the intake grille and the air guide plate, a labyrinth is created between the air guide plate and the sound damping box, and an expansion region, in which the air intake pipe is arranged, is created between the sound damping box and a termination plate.

3. The air intake box of claim 2 , wherein the construction of the intake box is designed in two pieces, wherein the intake grille, the air guide plate, the termination plate, an upper part of the sound damping box and the upper insulating panel are fastened to the upper cover.

4. The air intake box of claim 1 , further comprising an air guide plate, which, in combination with the sound damping box, forms a sound trap, wherein a distance between the air guide plate and the sound damping box is smaller than the length of the sound trap of the air guide plate.

5. The air intake box of claim 1 , wherein the sound damping box has at least one air inlet opening, wherein the at least one air inlet opening has an area which has at least the size of a smallest cross-section area of the air intake pipe.

6. The air intake box of claim 1 , wherein an air chamber is formed by the insulating panels, and wherein a cross-section area of the air chamber is greater than the smallest cross-section area of the air intake pipe.

7. The air intake box of claim 6 , wherein a path of the sound waves through the air chamber tangentially along the insulating panels is at least twice as large as the distance between the two insulating panels.

8. The air intake box of claim 1 , wherein an interior of the sound damping box is filled completely or partially with sound-insulating material and/or a sinter material.

9. The air intake box of claim 1 , wherein at least one spacer bolt is arranged between the insulating panels, to prevent the insulating panels from being drawn together due to a reduced pressure or ageing phenomena.

10. The air intake box of claim 1 , wherein the cross-section area of the air flow openings of the intake grille is at least twice as large as the smallest cross-section area of the air intake pipe.

11. The air intake box of claim 1 , wherein the intake grille is set back by a distance in the direction of the air intake pipe, forming a prechamber, wherein a slot-like gap is arranged in the prechamber in front of the intake grille in order to allow the escape of any moisture which has penetrated the prechamber.

Assignees

• Knorr Bremse Systeme
• Knorr Bremse System Fur Schienefahrzeuge Gmbh

Inventors

• Fritz Matthias
• Gibson Melanie

Classifications

• F04D29/403

  especially adapted for elastic fluid pumps · CPC title

• F04D29/663 Primary

  Sound attenuation · CPC title

• B60T17/008 Primary

  Silencer devices · CPC title