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Hermetic compressorRelated Patent Categories: Pumps, Motor Driven, Electric Or Magnetic Motor, Reciprocating Rigid Pumping MemberHermetic compressor description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070020126, Hermetic compressor. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of priority under 35 U.S.C. .sctn. 119 to Korean Patent Application No. 2005-65184, filed Jul. 19, 2005, entire contents of which are incorporated herein by reference. This application may also be related to commonly owned U.S. patent application Ser. No. 11/199,170, filed Aug. 9, 2005, as well as commonly owned U.S. patent application Ser. No. 11/232,936, filed Sep. 23, 2005, the contents of each of which are incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a hermetic compressor, and, more particularly, to a hermetic compressor having an improved oil supply structure capable of supplying a sufficient amount of oil into a space defined between an eccentric portion of a rotating shaft and a connecting rod. [0004] 2. Description of the Related Art [0005] Japanese Patent Laid-Open Publication No. 63-85270 describes a conventional hermetic compressor in which oil is supplied into respective drive parts of the compressor by use of a rotational centrifugal force of a rotating shaft. According to the conventional structure for lubricating an eccentric portion of the rotating shaft, it is impossible to supply a sufficient amount of oil to the frictional region between the eccentric portion and a connection rod because an oil receiving gap between the connecting rod and the eccentric portion is extremely narrow. This results in insufficient lubrication, which causes excessive wear of the compressor components. [0006] In particular, if a drive motor stops, the oil, which serves as a lubricant between the rotating shaft and the connecting rod, flows downward while only an extremely small amount of oil remains. As a result, the rotating shaft inevitably rotates with little or no oil lubrication until oil is again supplied when the compressor initially operates. As a result, wear of the compressor parts increases, as does the noise generated by the compressor. [0007] Furthermore, since the eccentric portion of the rotating shaft exhibits poor lubrication when the maximum compression load is applied as the piston reaches a top dead point, durability and operational reliability of the rotating shaft are severely damaged. SUMMARY OF THE INVENTION [0008] The present invention has been made in order to solve the above problems. It is an aspect of the invention to provide a hermetic compressor capable of supplying a sufficient amount of oil into a frictional region between an eccentric portion of a rotating shaft and a connecting rod. [0009] To this end, a first non-limiting aspect of the present invention provides a hermetic compressor, including: a hermetic case; a frame configured to be received in the hermetic case, a drive unit and a compression unit arranged at lower and upper sides of the frame, respectively; a rotating shaft mounted to the frame and configured to transmit a rotational force of the drive unit to the compressional unit and having an upper eccentric portion connected to the upper compression unit; and a connecting rod configured to be coupled to the eccentric portion, wherein an oil bank is formed at a surface of the eccentric portion of the rotating shaft that comes into contact with the connecting rod. [0010] Another non-limiting aspect of the present invention provides a hermetic compressor, including: a case; a drive unit adapted to be received in the case; a compression until adapted to be received in the case; a rotating shaft configured to transmit a rotation a1 force of the drive unit to the compression unit, the rotating shaft including at least an eccentric portion; a connecting rod configured to be coupled to the eccentric portion and an oil bank positioned at a surface of the eccentric portion. [0011] Additional aspects and/or advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS [0012] These and/or other aspects and advantages of the exemplary embodiments of the invention will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, of which: [0013] FIG. 1 is a sectional view showing a non-limiting example of an oil supply structure for an eccentric portion of a rotating shaft; [0014] FIG. 2 is a sectional view showing a non-limiting example of an interior configuration of a hermetic compressor including an eccentric portion of a rotating shaft; [0015] FIG. 3 is a sectional view showing an oil supply configuration including an oil bank formed at the eccentric portion of the rotating shaft according to a second non-limiting embodiment of the present invention; [0016] FIGS. 4A to 4C are sectional views showing an oil supply configuration including an oil bank formed at the eccentric portion of the rotating shaft according to a third non-limiting embodiment of the present invention; [0017] FIGS. 5A to 5C are sectional views showing an oil supply configuration including an oil bank formed at the eccentric portion of the rotating shaft according to a fourth non-limiting embodiment of the present invention; [0018] FIG. 6 is a sectional view showing the a non-limiting example of the positional relationship between the rotating shaft, connecting rod, and piston when the piston reaches a top dead point; [0019] FIGS. 7A to 7C are sectional views showing an oil supply configuration including an oil bank formed at the eccentric portion of the rotating shaft according to a fifth non-limiting embodiment of the present invention; and [0020] FIGS. 8A to 8C are sectional views showing an oil supply configuration including an oil bank formed at the eccentric portion of the rotating shaft according to a sixth non-limiting embodiment of the present invention. Continue reading about Hermetic compressor... Full patent description for Hermetic compressor Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Hermetic compressor patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Hermetic compressor or other areas of interest. ### Previous Patent Application: Micropump for electronics cooling Next Patent Application: Hermetic type compressor Industry Class: Pumps ### FreshPatents.com Support Thank you for viewing the Hermetic compressor patent info. IP-related news and info Results in 0.16086 seconds Other interesting Feshpatents.com categories: Accenture , Agouron Pharmaceuticals , Amgen , AT&T , Bausch & Lomb , Callaway Golf 174 |
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