Lubricant Control Valves for Screw Compressors
A technology of screw compressors and lubricants, applied in parts of pumping devices for elastic fluids, rotary piston machines, rotary piston/oscillating piston pump parts, etc., can solve problems such as hindering oil injection
Active Publication Date: 2016-03-30
TRANE INT INC
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- Abstract
- Description
- Claims
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AI Technical Summary
Problems solved by technology
However, one disadvantage of locating the injection port near the discharge port of the compressor is that when the oil pressure is relatively low, the relatively high pressure within the compression chamber may impede the injection of oil
Thus, many current oil injection systems position the injection port closer to the compressor's suction port, sacrificing efficiency to reduce the likelihood that no oil is injected into the compression chamber
Method used
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[0017] Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in application to the details of construction and arrangement of parts set forth in the following description or shown in the drawings. The invention is capable of other embodiments or of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of illustrating and describing one or more examples of the invention and should not be regarded as limiting. The invention can be embodied in forms not specifically described herein.
[0018] figure 1 and 2 A compressor system 10 embodying the present invention is shown. In the illustrated embodiment, the compressor system 10 is part of a refrigeration system 14 operable to circulate a refrigerant to cool an area. Although the illustrated compressor system 10 is described as being used with a refrigeration system ...
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A compressor system includes a lubricant reservoir, a screw compressor, and a valve. A screw compressor includes a housing defining a compression chamber having a suction port, a discharge port, a first lubricant feed port located between the suction port and the discharge port, and a lubricant feed port located between the discharge port and the first lubrication port. A second lubricant feed port between the lubricant feed ports. The valve is in fluid communication with the lubricant reservoir, in fluid communication with the first lubricant port via the first lubricant feed passage, and in fluid communication with the second lubricant feed port via the second lubricant feed passage. The valve is movable between a first position and a second position. In the first position, the valve fluidly connects the lubricant reservoir to the first lubricant feed passage to direct lubricant to the first lubricant feed port. In the second position, the valve fluidly connects the lubricant reservoir to the second lubricant feed passage to direct lubricant to the second lubricant feed port.
Description
technical field [0001] The present invention relates to screw compressors, and more particularly to valves for screw compressors. Background technique [0002] Screw compressors typically include an oil injection system for injecting oil into the compression chambers and bearings of the compressor. The oil injection system provides lubrication, cooling and improved sealing within the compression chamber. Oil injection systems typically use refrigeration system pressure, including compressed fluid pressure and oil pressure, to inject oil into the compression chambers and bearings of the compressor. For example, oil may be injected due to the pressure difference between the system discharge pressure and the pressure at the injection port. Oil is generally not injected during operating conditions in which the system pressure is equal to or less than the pressure at the injection port. [0003] To improve compressor efficiency, it is sometimes desirable to inject oil into the...
Claims
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IPC IPC(8): F04C29/02F04C2/107F04C18/16F04C29/12
CPCF04C18/16F04C29/021F04C29/0014F04C2240/809
Inventor J·赫格R·梅费尔德
Owner TRANE INT INC