# US 5,703,336 A · Exhaust noise suppressing apparatus for hermetic compressor

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 5,703,336 A
- Document ID: US5703336A
- Status: Granted
- Kind: A
- Application number: 08/638,293
- Filed: 1996-04-26
- Granted: 1997-12-30
- Earliest claimed: 1995-11-02
- Assignees: LG Electronics Inc.
- Inventors: Kyoung Sig Tark; Sung Oun Park
- Web page: https://patentgrep.com/patent/US5703336A

## CPC

- F04B 39/0055: {with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes}
- F01N 1/12: using spirally or helically shaped channels (cyclones B04C)
- Y10S 181/403: Refrigerator compresssor muffler
- F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F)
- F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

An improved exhaustion noise suppressing apparatus for a hermetic compressor directed to minimizing vibration of a refrigerator cycle pipe mechanism caused by a pressure difference of an exhausting gas pressure of the exhausting gas which is discharged from the system to the outside of the compressor by providing a damping member for offsetting a pressure wave form of the refrigerant gas to one side of the interior of the exhaustion noise suppressing unit wherein the compressed refrigerant gas discharged from the cylinder and the exhausting chamber is introduced into the loop pipe through the head cover and the exhaustion noise suppressing unit.

## Claims

### Claim 1

An exhaust noise suppressing apparatus for a hermetic compressor, the apparatus comprising:
an exhaust noise suppressing unit forming a single chamber having an inlet port at one end thereof for communicating with an exhausting chamber of the hermetic compressor and having an outlet port at another end thereof; and
damping means provided at the inlet port of the exhaust noise suppressing unit for guiding a compressed refrigerant gas from the exhausting chamber of the hermetic compressor into the exhaust noise suppressing apparatus unit while damping vibration noise in the refrigerant gas being guided as the refrigerant gas reaches the single chamber exhaust noise suppressing unit.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein said damping means is a spiral shaped pipe having one end extending through the inlet port of the exhaust noise suppressing unit and into the exhaust chamber of the hermetic compressor, and having an opposite end thereof directed generally perpendicularly to the outlet port of the exhaust noise suppressing unit.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein said damping means is a damping member fixed to an interior of the exhaustion noise suppressing unit.

### Claim 4 (depends on 3)

The apparatus of claim 3, wherein said damping member includes a guiding groove communicating with the inlet portion of the exhaustion noise suppressing unit.

### Claim 5 (depends on 4)

The apparatus of claim 4, wherein said guiding groove is scroll-shaped and externally formed from the center thereof.

### Claim 6 (depends on 5)

The apparatus of claim 5, wherein said damping member includes a path formed at an outer surface thereof and communicating between one portion of the guiding groove and the exhaustion noise suppressing unit.