JPS56101493A - Detecting device for lubricating oil in rotary machine - Google Patents

Detecting device for lubricating oil in rotary machine

Info

Publication number
JPS56101493A
JPS56101493A JP402880A JP402880A JPS56101493A JP S56101493 A JPS56101493 A JP S56101493A JP 402880 A JP402880 A JP 402880A JP 402880 A JP402880 A JP 402880A JP S56101493 A JPS56101493 A JP S56101493A
Authority
JP
Japan
Prior art keywords
strainer
electrodes
oil
lubricating oil
suction tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP402880A
Other languages
Japanese (ja)
Inventor
Hiroyuki Tsuji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP402880A priority Critical patent/JPS56101493A/en
Publication of JPS56101493A publication Critical patent/JPS56101493A/en
Pending legal-status Critical Current

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  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To detect the condition of lubricating oil automatically according to the change in permittivity by providing double cylinder electrodes inside an oil strainer and detecting the permittivity of gas-liquid located between these electrodes.
CONSTITUTION: In a crank case 1, the oil strainer 3 is provided so that dust and other impurities are not sucked in by the sucking force given by an oil pump 2. Inside of the strainer 3, a suction tube 4 having a plurality of concentrical openings 41 is provided, constituting a pair of electrodes together with the oil strainer 3. Between the suction tube 4 and the strainer is provided an insulation member 5 intermediately. A control device 8 supplys high-frequency voltage between the strainer 3 and the suction tube 4, detects electrostatic capacitance between both electrodes while delivering a signal for exhaustion of the lubricating oil.
COPYRIGHT: (C)1981,JPO&Japio
JP402880A 1980-01-16 1980-01-16 Detecting device for lubricating oil in rotary machine Pending JPS56101493A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP402880A JPS56101493A (en) 1980-01-16 1980-01-16 Detecting device for lubricating oil in rotary machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP402880A JPS56101493A (en) 1980-01-16 1980-01-16 Detecting device for lubricating oil in rotary machine

Publications (1)

Publication Number Publication Date
JPS56101493A true JPS56101493A (en) 1981-08-14

Family

ID=11573499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP402880A Pending JPS56101493A (en) 1980-01-16 1980-01-16 Detecting device for lubricating oil in rotary machine

Country Status (1)

Country Link
JP (1) JPS56101493A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03229979A (en) * 1990-02-05 1991-10-11 Hitachi Ltd Oil supply detector for oil cooling type compressor
CN103148333A (en) * 2011-12-07 2013-06-12 株式会社神户制钢所 Liquid rotation machine
US10739327B2 (en) 2015-05-08 2020-08-11 Danfoss (Tianjin) Ltd. Apparatus and method for monitoring the quality of a lubricant in a compressor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03229979A (en) * 1990-02-05 1991-10-11 Hitachi Ltd Oil supply detector for oil cooling type compressor
CN103148333A (en) * 2011-12-07 2013-06-12 株式会社神户制钢所 Liquid rotation machine
JP2013119807A (en) * 2011-12-07 2013-06-17 Kobe Steel Ltd Fluid rotary machine
US10739327B2 (en) 2015-05-08 2020-08-11 Danfoss (Tianjin) Ltd. Apparatus and method for monitoring the quality of a lubricant in a compressor

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