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Oil supply type compressor

一种压缩机、供油的技术，应用在旋转活塞式机械、机械设备、机器/发动机等方向，能够解决电动机负担增大、压缩空气供给量不足等问题，达到避免起动迟滞、缩短压力降低时间的效果

Active Publication Date: 2016-05-25
HITACHI IND EQUIP SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the compressed air consumption on the user side fluctuates greatly (load fluctuation), since the compressor stops repeatedly in a short period of time, the load on the motor that drives the compressor body increases.
In addition, if a time limit is set until restarting is possible, the supply of compressed air to the user side may be insufficient.

Method used

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Examples

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Embodiment 1

[0041] For the embodiment 1 of the oil-supply compressor of the present invention, take the situation applied to the oil-supply screw compressor as an example, use Figure 1 ~ Figure 4 Be explained.

[0042] according to figure 1 , to describe the overall structure of the oil-supplied screw compressor of the first embodiment.

[0043] figure 1 The illustrated oil-supply screw compressor (hereinafter also simply referred to as a compressor) 1 is a device for producing compressed air, and is configured as a package type. This package type oil supply type screw compressor 1 has a base 2 as a base and a package 8 provided on the base 2 , and the inside of the package 8 is divided into a lower machine room 5 and an upper cooling room 7 . The package 8 is constituted by soundproof covers 8a, 8b for suppressing the propagation of noise to the outside of the machine.

[0044] In the above-mentioned machine room 5, a compressor main body 3 for producing compressed air, a motor 4 fo...

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Abstract

The objective of the present invention is to reduce the pressure reduction time while preventing foaming in an oil separation device during capacity control of a compressor, and to avoid startup congestion and thus enable normal starting even when a portion provided in an air release pipe and having a small flow path cross-sectional area becomes clogged. This oil supply type compressor is equipped with a compressor main body, an oil separation device, and an air discharge passage for discharging compressed air during capacity control of the compressor. Furthermore, the air discharge passage is equipped with a passage having a large flow volume and a passage having a small flow volume, and when compressed air is discharged from the air discharge passage to the atmosphere during capacity control, the pressure in the oil separation device is discharged using the passage having a large flow volume, until the pressure reaches or falls below a restarting-possible pressure, which is the pressure at which startup congestion does not occur when the compressor main body is restarted. When the pressure in the oil separation device reaches a prescribed pressure, which is less than or equal to the restarting-possible pressure and is higher than a foaming pressure, which is the pressure at which foaming occurs when the pressure in the oil separation device is discharged quickly, the pressure is discharged using the passage having a small flow volume.

Description

technical field [0001] The present invention relates to an oil-supply compressor having an oil separator and an exhaust path, and particularly to an oil-supply compressor that suppresses oil foaming that occurs when compressed air inside the oil separator is discharged. Background technique [0002] There is known an oil-supplied compressor that uses oil when generating compressed air for the main purposes of cooling the compressor air, sealing the compression chamber, and lubricating the compressor. [0003] The compressed air compressed to a specified pressure inside the compressor body of the oil supply compressor is discharged in a state mixed with lubricating oil, and the oil separation mechanism (primary separation) and oil separator in the oil tank constituting the oil separation device are used. (Secondary separation) After the lubricating oil is separated, it is sent out of the machine and supplied to the user's use place. [0004] The separation of lubricating oil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C29/12F04C29/02
CPCF04C29/026F04C18/16F04C29/12
Inventor 角知之大城龙亮
Owner HITACHI IND EQUIP SYST CO LTD
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