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Liquid degradation determination device and hydraulic unit

A degradation judgment, liquid technology, applied in the direction of measuring device, engine measuring device, engine components, etc., can solve the problem of complex structure of the judgment part

Pending Publication Date: 2022-03-11
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned existing liquid deterioration judging device, there is the following technical problem: in order to carry out the judgment of lubricating oil deterioration according to the time change of brightness or color component maximum difference, it is necessary to continuously record the brightness or color component maximum difference, The structure of the judgment unit will become complicated

Method used

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  • Liquid degradation determination device and hydraulic unit
  • Liquid degradation determination device and hydraulic unit
  • Liquid degradation determination device and hydraulic unit

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0038] figure 1 It is a perspective view of the hydraulic unit 1 of the first embodiment of the present disclosure. The hydraulic unit 1 of the present embodiment supplies hydraulic oil to external equipment such as machine tools.

[0039] refer to figure 1 , the hydraulic unit 1 includes a hydraulic oil container 10 for storing hydraulic oil, and a stand 11 mounted on the upper portion of the hydraulic oil container 10 . The hydraulic unit 1 includes a hydraulic pump (not shown), a motor (not shown) that drives the hydraulic pump, an oil cooler 12 that cools hydraulic oil discharged from the hydraulic pump, and a controller 13 that controls the motor. The hydraulic pump, motor, oil cooler 12 and controller 13 are placed on the platform 11 , and the working oil container 10 is arranged below the platform 11 . Furthermore, the hydraulic unit 1 includes a cooling fan 14 that supplies cooling air to the motor and oil cooler 12 . The structure of the hydraulic unit 1 of this e...

no. 2 approach

[0086] The hydraulic unit 1 of the second embodiment has the same configuration as the hydraulic unit 1 of the first embodiment except for the first color, the second color, and the third color, and the first detection value, the second detection value, and the third detection value. , therefore, citing Figure 1 to Figure 6 .

[0087] The judging unit 37a of this embodiment judges the degree of deterioration of the hydraulic oil based on the ratio B / G of the blue detected value B to the green detected value G and the ratio R / G of the red detected value R to the green detected value G. The green in the present embodiment is an example of the first color in the present disclosure, and the green detection value G in the present embodiment is an example of the first detection value in the present disclosure. The blue in the present embodiment is an example of the second color in the present disclosure, and the blue detection value B in the present embodiment is an example of the...

no. 3 approach

[0099] The hydraulic unit 1 of the third embodiment has the same structure as the hydraulic unit 1 of the first embodiment except for the first color, the second color, and the third color, and the first detection value, the second detection value, and the third detection value. , therefore, citing Figure 1 to Figure 6 .

[0100] The judging unit 37 a of the present embodiment judges the degree of deterioration of hydraulic oil based on the ratio R / B of the red detection value R to the blue detection value B and the ratio G / B of the green detection value G to the blue detection value B. The blue in the present embodiment is an example of the first color in the present disclosure, and the blue detection value B in the present embodiment is an example of the first detection value in the present disclosure. The red of this embodiment is an example of the 2nd color of this disclosure, and the red detection value R of this embodiment is an example of the 2nd detection value of th...

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Abstract

A liquid deterioration determination device (30) is provided with: a light receiving unit (33) that receives detection light that has passed through a liquid; and a determination unit (37a) that determines the degree of deterioration of the liquid. The light receiving unit (33) outputs a first detection value (R) indicating an amount of light of a first color included in the detection light that has passed through the liquid, and a second detection value (B) indicating an amount of light of a second color that is different from the first color included in the detection light that has passed through the liquid. The determination unit (37a) determines the degree of deterioration of the liquid on the basis of the ratio of the second detection value (B) to the first detection value (R).

Description

technical field [0001] The present disclosure relates to a fluid deterioration determination device and a hydraulic unit. Background technique [0002] As a conventional liquid deterioration determination device, a light emitting element that emits detection light to lubricating oil and a light receiving element acquires a detection value indicating color information of the detection light transmitted through the lubricating oil (see Patent Document 1) . The fluid deterioration judging device includes a judging unit that calculates a maximum difference in brightness or color components based on the detection value, and judges lubricant deterioration based on a time change in the maximum difference in brightness or color components. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: International Publication No. 2015 / 060457 Contents of the invention [0006] The technical problem to be solved by the invention [0007] However, in the ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25G01N21/01
CPCG01N21/25G01N21/01G01N21/251G01N33/2888F16N2250/34F16N29/00G01N21/31
Inventor 清家光中村博一井上峰雄绫户健二
Owner DAIKIN IND LTD