IP Library Granted Patent US 7,438,536
Granted Patent B2
US 7,438,536 · App. 11/004,123 · Granted Oct 21, 2008

Compressors including a plurality of oil storage chambers which are in fluid communication with each other

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Quick Facts
Patent No.
US 7,438,536
App. No.
11/004,123
Granted
Oct 21, 2008
Kind
B2
Abstract

The present invention provides a compressor capable of supplying a lubricating oil stably to the refrigerant suction side of a compression section even if a lubricating oil is discharged into an oil storage chamber with great force. In this compressor, the oil storage chamber is provided so that two chambers of a first oil storage chamber and a second oil storage chamber communicate with each other, the lubricating oil discharged from a separation chamber is received by the first oil storage chamber, and the lubricating oil is supplied from the second oil storage chamber to the refrigerant suction side of the compression section. Therefore, even if the oil surface of the first oil storage chamber is disturbed by the force of the lubricating oil discharged from the separation chamber, the lubricating oil can always be supplied stably without hindrance to the supply of lubricating oil to the refrigerant suction side of the compression section.

Claims (12)

1. A compressor comprising:

a compressor body;

a compression section for compressing a refrigerant sucked in said compressor body;

a separation chamber for separating a lubricating oil, which is contained in the refrigerant discharged from said compression section, from the refrigerant;

a first oil storage chamber for receiving the lubricating oil discharged from said separation chamber;

a second oil storage chamber for storing the lubricating oil to be supplied to the refrigerant suction side of said compression section;

a partition member separating the first oil storage chamber from the second oil storage chamber; and

a lower communication path for connecting lower parts of said first oil storage chamber and said second oil storage chamber to each other, wherein an orifice is provided to regulate the flow rate of lubricating oil supplied from said second oil storage chamber to the refrigerant suction side of said compression section.

2. The compressor according to claim 1 , wherein an upper communication path is provided to connect upper spaces of said first oil storage chamber and said second oil storage chamber to each other.

3. The compressor according to claim 2 , wherein an orifice is provided to regulate the flow rate of lubricating oil supplied from said second oil storage chamber to the refrigerant suction side of said compression section.

4. The compressor according to claim 1 , wherein a filter is provided between said orifice and said second oil storage chamber.

5. The compressor according to claim 3 , wherein a filter is provided between said orifice and said second oil storage chamber.

Assignments (5)
CHANGE OF NAME Recorded Aug 22, 2022
From: SANDEN HOLDINGS CORPORATION
To: SANDEN CORPORATION
Reel/Frame 061296/0529 →
CORRECTIVE ASSIGNMENT TO CORRECT THE TYPOGRAPHICAL ERRORS IN PATENT NOS. 6129293, 7574813, 8238525, 8083454, D545888, D467946, D573242, D487173, AND REMOVE 8750534 PREVIOUSLY RECORDED ON REEL 047208 FRAME 0635. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME. Recorded Apr 27, 2020
From: SANDEN CORPORATION
To: SANDEN HOLDINGS CORPORATION
Reel/Frame 053545/0524 →
CORRECTIVE ASSIGNMENT TO CORRECT THE PROPERTY NUMBERS PREVIOUSLY RECORDED AT REEL: 038489 FRAME: 0677. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Oct 9, 2018
From: SANDEN CORPORATION
To: SANDEN HOLDINGS CORPORATION
Reel/Frame 047208/0635 →
CHANGE OF NAME Recorded Apr 21, 2016
From: SANDEN CORPORATION
To: SANDEN HOLDINGS CORPORATION
Reel/Frame 038489/0677 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 10, 2005
From: ITO, KIYOFUMI
To: SANDEN CORPORATION
Reel/Frame 015544/0445 →