Suction muffler for compressor

Patent metadata

Field	Value
Publication number	US-9518574-B2
Application number	US-201214125018-A
Country	US
Kind code	B2
Filing date	Jun 8, 2012
Priority date	Jun 10, 2011
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

To prevent oil from being drawn into a suction muffler of a compressor, a suction muffler 7 is disposed in a compressor casing at an inlet of a compression chamber at an upstream side of a refrigerant passage and positioned so that the suction muffler 7 receives oil, in which an upper lid member 71 , and a lower lid member 72 having a bottom wall to which refrigerant introducing and leading-out pipes 8, 72 d are connected, are fitted and secured by bringing an inner face of a side wall of the member 71 into tight contact with an outer face of a side wall of the member 72 , and a protruding portion 72 f is provided by forming a lower end of side wall of the member 71 to protrude below a lower face of bottom wall of the member 72 , to surround connecting portions of the pipes 8, 72 d.

First claim

The invention claimed is:

1. A suction muffler for a compressor, the suction muffler being disposed in a compressor casing at an inlet of a compression chamber on an upstream side of a refrigerant passage and disposed at a location at which the suction muffler receives oil sprayed from above in the casing,
wherein an introducing pipe and a leading-out pipe of a refrigerant are connected upward to the suction muffler from beneath the suction muffler, and
wherein at an outside of connecting portions of the introducing pipe and the leading-out pipe of the refrigerant, each of which is connected to the suction muffler, a protruding portion which protrudes below the connecting portions and surrounds the connecting portions is provided,
the suction muffler comprising:
an upper lid member which has an open lower face; and
a lower lid member which has an open upper face and a bottom wall to which the introducing pipe and the leading-out pipe of the refrigerant are connected,
wherein an inner face of a side wall of the upper lid member is joined to an outer face of a side wall of the lower lid member, to be fitted and secured thereto, and
wherein the protruding portion is provided by forming a lower end of the side wall of the upper lid member to protrude below a downward facing surface of the bottom wall of the lower lid member connected with the introducing pipe and the leading-out pipe of the refrigerant.

2. The suction muffler for the compressor according to claim 1 , wherein the upper lid member and the lower lid member are secured by engaging a protrusion formed on one of the side walls and an engaging hole formed on the other of the side walls.

3. The suction muffler for the compressor according to claim 1 , wherein to an attaching hole which is formed to penetrate through the bottom wall of the lower lid member, a rubber bush is attached, and an end of the refrigerant introducing pipe disposed to penetrate through the casing is press-fitted and attached in an inner peripheral surface of the bush.

4. A suction muffler for a compressor, the suction muffler being disposed in a compressor casing at an inlet of a compression chamber on an upstream side of a refrigerant passage and disposed at a location at which the suction muffler receives oil sprayed from above in the casing,
wherein an introducing pipe and a leading-out pipe of a refrigerant are connected upward to the suction muffler from beneath the suction muffler, and
wherein at an outside of connecting portions of the introducing pipe and the leading-out pipe of the refrigerant, each of which is connected to the suction muffler, a protruding portion which protrudes below the connecting portions and surrounds the connecting portions is provided,
the suction muffler comprising:
an upper lid member which has an open lower face; and
a lower lid member which has an open upper face and a bottom wall to which the introducing pipe and the leading-out pipe of the refrigerant are connected,
wherein an inner face of a side wall of the upper lid member is joined to an outer face of a side wall of the lower lid member, to be fitted and secured thereto, and
wherein the protruding portion is provided on a bottom wall of the lower lid member to protrude below a downward facing surface of the bottom wall connected with the introducing pipe and the leading-out pipe of the refrigerant.

5. The suction muffler for the compressor according to claim 4 , wherein the upper lid member and the lower lid member are secured by engaging a protrusion formed on one of the side walls and an engaging hole formed on the other of the side walls.

6. The suction muffler for the compressor according to claim 4 , wherein to an attaching hole which is formed to penetrate through the bottom wall of the lower lid member, a rubber bush is attached, and an end of the refrigerant introducing pipe disposed to penetrate through the casing is press-fitted and attached at an inner peripheral surface of the bush.

Assignees

• Tobe Takahisa
• Sanden Holdings Corp

Inventors

• Tobe Takahisa

Classifications

• F04B39/04

  Measures to avoid lubricant contaminating the pumped fluid · CPC title

• F04B39/0072 Primary

  characterised by assembly or mounting · CPC title

• F04B39/0061 Primary

  using muffler volumes · CPC title

• F04B39/023

  Hermetic compressors · CPC title