Silencer for a vehicle air conditioning system

Patent metadata

Field	Value
Publication number	US-9541301-B2
Application number	US-201514930795-A
Country	US
Kind code	B2
Filing date	Nov 3, 2015
Priority date	Aug 23, 2013
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

A silencer for a vehicle air conditioning system is designed to reduce a noise and a vibration of a compressor transmitted into a vehicle room along coolant pipes. The silencer includes a silencer body tube and an external resonance tube. The silencer body tube is installed between the coolant pipes wherein a coolant gas flowing along the coolant pipes passes through the silencer body tube, the silencer body tube including one or more resonance holes formed on an outer circumferential surface of the silencer body tube. The external resonance tube is installed on the outer circumferential surface of the silencer body tube wherein a resonance chamber for absorbing a vibration and a noise of a coolant gas flowing through the silencer body tube is defined between the outer circumferential surface of the silencer body tube and the external resonance tube.

First claim

What is claimed is:

1. A silencer for reducing noise and vibration transmitted through a coolant pipe conveying a coolant gas and a lubricating oil therethrough, the silencer comprising:
a silencer body tube including a resonance hole formed in an outer circumferential surface thereof; and
an external resonance tube disposed around the outer circumferential surface of the silencer body tube, a resonance chamber having a total volume defined between the outer circumferential surface of the silencer body tube and the external resonance tube, the total volume of the resonance chamber absorbing a vibration and a noise of the coolant gas flowing through the silencer body tube, the resonance hole providing fluid communication between the silencer body tube and the resonance chamber and lubricating oil introduced into the resonance chamber flowing downward in a gravity direction and discharging into the silencer body tube through the resonance hole.

2. The silencer of claim 1 , wherein the silencer body tube is coaxial with and in fluid communication with the coolant pipe to cause the coolant gas flowing through the coolant pipe to flow through the silencer body tube.

3. The silencer of claim 2 , wherein the silencer body tube has an inner diameter that is substantially equal to an inner diameter of the coolant pipe.

4. The silencer of claim 1 , wherein the silencer body tube is formed from a portion of the coolant pipe conveying the coolant gas therethrough.

5. The silencer of claim 1 , wherein the total volume of the resonance chamber is fixed.

6. A silencer for reducing noise and vibration transmitted through a coolant pipe conveying a coolant gas and a lubricating oil therethrough, the silencer comprising:
a silencer body tube including a resonance hole formed in an outer circumferential surface thereof; and
an external resonance tube disposed around the outer circumferential surface of the silencer body tube, a resonance chamber having a fixed total volume defined between the outer circumferential surface of the silencer body tube and the external resonance tube, the fixed total volume of the resonance chamber absorbing a vibration and a noise of the coolant gas flowing through the silencer body tube, the resonance hole providing fluid communication between the silencer body tube and the resonance chamber and lubricating oil introduced into the resonance chamber flowing downward in a gravity direction and discharging into the silencer body tube through the resonance hole.

7. The silencer of claim 6 , wherein the resonance hole is formed in a gravity direction lower portion of the silencer body tube.

8. The silencer of claim 7 , wherein the silencer body tube is oriented at a predetermined angle with respect to a ground surface.

9. The silencer of claim 8 , wherein the resonance hole is spaced from an end of the silencer body tube adjacent a ground surface.

10. The silencer of claim 7 , wherein there is a plurality of resonance holes and the silencer body tube is oriented at a predetermined angle with respect to a ground surface and the resonance hole is arranged lower than any remaining ones of the plurality of resonance holes in the gravity direction.

11. The silencer of claim 7 , wherein each of the plurality of resonance holes formed in the silencer body tube is formed in a portion of the silencer body tube corresponding to a gravity direction lower region of the resonance chamber having a length of less than or equal to one half of a total length of the resonance chamber.

12. The silencer of claim 11 , wherein each of the plurality of resonance holes formed in the silencer body tube is formed in a portion of the silencer body tube corresponding to a gravity direction lowermost region of the resonance chamber.

13. The silencer of claim 10 , wherein the plurality of resonance holes includes a first resonance hole formed in a gravity direction lowermost portion of the silencer body tube and a second resonance hole formed in a gravity direction uppermost portion of the silencer body tube.

14. The silencer of claim 6 , wherein the silencer body tube includes a first correct position indicating portion formed therein to indicate a correct placement of a first end of the external resonance tube relative to the silencer body tube.

15. The silencer of claim 14 , wherein the silencer body tube includes a second correct position indicating portion formed in the silencer body tube axially spaced apart from the first correct position indicating portion, wherein the second correct position indicating portion corresponds to a position of a second end of the external resonance tube.

16. The silencer of claim 15 , wherein the first correct position indicating portion includes a protrusion bead formed to protrude from a portion of the outer circumferential surface of the silencer body tube corresponding to a position of one end of the external resonance tube.

17. The silencer of claim 16 , wherein the protrusion bead protrudes radially outwardly from the outer circumferential surface of the silencer body tube and is formed by subjecting the silencer body tube to a forming process, and wherein the external resonance tube is welded to the protrusion bead.

18. The silencer of claim 17 , wherein the silencer body tube further comprises a welding groove formed on the outer circumferential surface of the silencer body tube, wherein the welding groove is configured to receive a melted welding metal when the external resonance tube is welded to the protrusion bead.

Assignees

• Halla Visteon Climate Control
• Hanon Systems

Inventors

• Jung Hwan Myeong
• Seo Jeong Hun
• Ko Jae Woo
• Lee Nam Joon
• Lee Ho
• Baek Seung Ho
• Park Dae Keun

Classifications

• B60H2001/006

  Noise reduction · CPC title

• F24F2013/245

  using resonance · CPC title

• B60H1/00571

  of liquid ducts, e.g. for coolant liquids or refrigerants · CPC title

• F24F13/24 Primary

  Means for preventing or suppressing noise · CPC title