Compressor noise reduction

Patent metadata

Field	Value
Publication number	US-10890188-B2
Application number	US-201715682208-A
Country	US
Kind code	B2
Filing date	Aug 21, 2017
Priority date	Aug 22, 2016
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

A scroll compressor is disclosed. The compressor includes an enclosure including a compression mechanism that compresses a working fluid. A discharge port discharges a compressed working fluid. A discharge plenum receives the compressed working fluid from the discharge port. A pulsation absorber is disposed within the discharge plenum, the pulsation absorber dividing the discharge plenum into a plurality of volumes.

First claim

What is claimed is:

1. A scroll compressor, comprising:
an enclosure including:
a compression mechanism that compresses a working fluid;
a discharge port through which a compressed working fluid is discharged;
a discharge plenum which receives the compressed working fluid from the discharge port; and
a pulsation absorber disposed within the discharge plenum, the pulsation absorber dividing the discharge plenum into a plurality of volumes, the pulsation absorber extending across a diameter of the enclosure and contacting walls of the enclosure, and the entire pulsation absorber extending in a direction perpendicular to a longitudinal axis of the discharge port,
wherein in a sectional view of the scroll compressor, the pulsation absorber includes a first end and a second end, the first end and the second end contact walls of the enclosure, and the entire pulsation absorber extends from the first end to the second end in the direction perpendicular to the longitudinal axis of the discharge port.

2. The scroll compressor according to claim 1 , wherein the pulsation absorber is a porous material dividing the discharge plenum into two chambers.

3. The scroll compressor according to claim 2 , wherein the pulsation absorber is made of a sintered metal, a perforated sheet metal, a micro-perforated sheet metal, metallic fiber, or another pulsation-absorbing medium.

4. The scroll compressor according to claim 2 , wherein the pulsation absorber is disposed a distance from the discharge port that is based on absorption of pulsations in the compressed working fluid across a particular frequency range.

5. The scroll compressor according to claim 2 , further comprising a tuning member disposed perpendicularly to the pulsation absorber.

6. The scroll compressor according to claim 5 , wherein the tuning member is disposed on a side of the pulsation absorber that is relatively away from the discharge port.

7. The scroll compressor according to claim 5 , wherein the tuning member forms a plurality of pulsation chambers.

8. The scroll compressor according to claim 7 , wherein the plurality of pulsation chambers are designed to attenuate selected frequencies, the plurality of pulsation chambers having different volumes.

9. The scroll compressor according to claim 1 , further comprising a muffler assembly, the muffler assembly including a shell having a volume and a connecting tube disposed between the shell and the discharge port, the connecting tube connecting the shell to the discharge port.

10. The scroll compressor according to claim 9 , wherein a longitudinal axis of the connecting tube is perpendicular to the longitudinal axis of the discharge port.

11. The scroll compressor according to claim 9 , wherein the connecting tube is lined with a porous material.

12. The scroll compressor according to claim 1 , further comprising a plurality of muffler assemblies, each of the plurality of muffler assemblies including a shell having a volume and a connecting tube disposed between the shell and the discharge port, the connecting tube connecting the shell to the discharge port.

13. A heating, ventilation, and air conditioning (HVAC) system, comprising:
a compressor, a condenser, an expansion device, and an evaporator fluidly connected forming a heat transfer circuit,
wherein the compressor is a scroll compressor, the scroll compressor including:
an enclosure including:
a compression mechanism that compresses a working fluid;
a discharge port through which a compressed working fluid is discharged;
a discharge plenum which receives the compressed working fluid from the discharge port; and
a pulsation absorber disposed within the discharge plenum, the pulsation absorber dividing the discharge plenum into a plurality of volumes, the pulsation absorber extending across a diameter of the enclosure and contacting walls of the enclosure, and the entire pulsation absorber extending in a direction perpendicular to a longitudinal axis of the discharge port,
wherein in a sectional view of the scroll compressor, the pulsation absorber includes a first end and a second end, the first end and the second end contact walls of the enclosure, and the entire pulsation absorber extends from the first end to the second end in the direction perpendicular to the longitudinal axis of the discharge port.

14. The HVAC system according to claim 13 , wherein the pulsation absorber is a porous material dividing the discharge plenum into two chambers, and
the pulsation absorber is made of a sintered metal, a perforated sheet metal, or a micro-perforated sheet metal.

15. The HVAC system according to claim 13 , wherein the pulsation absorber is disposed a distance from the discharge port that is based on absorption of pulsations in the compressed working fluid across a particular frequency range.

16. The HVAC system according to claim 14 , further comprising a tuning member disposed perpendicularly to the pulsation absorber, the tuning member disposed on a side of the pulsation absorber that is relatively away from the discharge port and forming a plurality of pulsation chambers, wherein the plurality of pulsation chambers are designed to attenuate selected frequencies, the plurality of pulsation chambers having different volumes.

17. The HVAC system according to claim 13 , wherein the pulsation absorber includes a muffler assembly, the muffler assembly including a shell having a volume and a connecting tube disposed between the shell and the discharge port, the connecting tube connecting the shell to the discharge port,
wherein a longitudinal axis of the connecting tube is perpendicular to the longitudinal axis of the discharge port, the connecting tube being lined with a porous material, and
wherein the muffler assembly is a resonator, the shell having the volume is an elastic element of the resonator.

18. A method for attenuating pulsation in a scroll compressor, comprising:
directing a compressed working fluid from a compression mechanism of the scroll compressor through a discharge port into the discharge plenum; and
directing the compressed working fluid into a plurality of volumes within the discharge plenum, the plurality of volumes being formed by a pulsation absorber disposed within the discharge plenum, the pulsation absorber extending across a diameter of the enclosure and contacting walls of the enclosure, and the entire pulsation absorber extending in a direction perpendicular to a longitudinal axis of the discharge port,
wherein in a sectional view of the scroll compressor, the pulsation absorber includes a first end and a second end, the first end and the second end contact walls of the enclosure, and the entire pulsation absorber extends from the first end to the second end in the direction perpendicular to the longitudinal axis of the discharge port.

19. The method according to claim 18 , further comprising:
dividing the discharge plenum into the plurality of volumes;
wherein the dividing is performed at a time of manufacturing the scroll compressor.

20. The method according to claim 18 , further comprising:
dividing the discharge plenum into the plurality of volumes;
wherein the dividing is performed after a time of manufacturing the scroll compressor.

Assignees

• Trane Int Inc

Inventors

• Rockwood William B
• Harmening Richard D
• Kearney Todd

Classifications

• F04C29/0035

  Equalization of pressure pulses (silencing F04C29/06) · CPC title

• F04C29/063 Primary

  Sound absorbing materials · CPC title

• F25B1/04

  with compressor of rotary type ({F25B1/005,} F25B1/10 take precedence) · CPC title

• F04C29/12

  Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet · CPC title

• F04C29/065

  Noise dampening volumes, e.g. muffler chambers · CPC title