Hermetic compressor with pressure pulsation reducing mechanism for refrigerant
US5452991A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1994 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | May 17, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S181/403
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A hermetic compressor includes a sealed casing which accommodates therein a compressing unit for compressing a refrigerant and a driving unit for driving the compressing unit. A communication passage is provided for establishing communication between the compressing unit and a discharge muffler. The discharge muffler is formed therein with a substantially annular hermetic passage for the compressed refrigerant introduced via the communication passage. In the substantially annular hermetic passage, the introduced compressed refrigerant is bifurcated in opposite directions. The substantially annular hermetic passage has an outlet in the discharge muffler. At the outlet, the bifurcated refrigerant joins and flows out of the substantially annular hermetic passage so as to reduce pressure pulsation of the compressed refrigerant by canceling pressure pulsation components contained in the bifurcated refrigerant. In order to enhance the cancellation effect, the outlet may be arranged at a position which is opposite, in a diametrical direction, to a position where the substantially annular hermetic passage communicates with the communication passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.