Compressor With Muffler

a compressor and muffler technology, applied in the direction of machines/engines, liquid fuel engines, positive displacement liquid engines, etc., can solve problems such as noise and potential motor damag

US20090116977A1Inactive Publication Date: 2009-05-07EMERSON CLIMATE TECH INC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
Publication Date
2009-05-07
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

A compressor assembly may include a shell, a discharge fitting, a muffler, a compression mechanism, and a motor. The shell may have an opening therethrough with the discharge fitting generally extending therefrom. The muffler may be in communication with the discharge fitting and may be external to the shell. The muffler may have an inlet proximate the discharge fitting, an outlet distal from the discharge fitting, and a body portion extending therebetween. The muffler may include a valve assembly proximate the outlet. The compression mechanism may be contained within the shell and include a suction inlet and a discharge passageway. The discharge passageway may be connected to the opening in the shell for direct discharge of refrigerant from the compression mechanism to the discharge fitting. The motor may be contained within the shell and drivingly coupled to the compression mechanism.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of U.S. Provisional Application No. 60 / 984,908, filed on Nov. 2, 2007. The entire disclosure of the above application is incorporated herein by reference.FIELD

[0002] The present disclosure relates to scroll compressors, and more specifically to scroll compressor having mufflers.BACKGROUND AND SUMMARY

[0003] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

[0004] Direct discharge refrigerant compressors for cooling systems such as air conditioning, refrigeration or chiller systems, may include an external muffler to reduce a discharge pressure pulse and / or noise. These compressors may also include a device to prevent backflow during shutdown in order to prevent motor damage. When the compressor is shut down, the compression mechanism is at a lower pressure than the discharge fitting and the external muffler. Without backfl...

Examples

Embodiment Construction

[0025]The following description is merely exemplary in nature and is not intended to limit the present teachings, application, or uses.

[0026]The present teachings are suitable for incorporation in many different types of scroll and rotary compressors, including hermetic machines, open drive machines and non-hermetic machines. For exemplary purposes, a compressor assembly 10 is shown including a hermetic scroll refrigerant motor-compressor 12 of the low-side type, i.e., where the motor and compressor are cooled by suction gas in the hermetic shell, as illustrated in the vertical section shown in FIGS. 1, 2, 4 and 5.

[0027]As shown in FIGS. 1 and 2, compressor assembly 10 includes compressor 12 and an external muffler assembly 14. Compressor 12 may include a cylindrical hermetic shell 16, a compression mechanism 18, a main bearing housing 20, a motor assembly 22, a refrigerant discharge fitting 24, and a suction gas inlet fitting 26. The hermetic shell 16 may house the compression mech...