ENERGY RECOVERY DEVICE AND ENERGY RECOVERY METHOD

Title:

ENERGY RECOVERY DEVICE AND ENERGY RECOVERY METHOD

Document Type and Number:

WIPO Patent Application WO/2018/155244

Kind Code:

A1

Abstract:

In order to prevent a reduction in the energy recovery rate caused by flow rate fluctuations in a working fluid in a flow path in an energy recovery device that recovers energy from a working fluid ejected from a fluid chamber, this energy recovery device (1) is equipped with an inertial fluid container (21), a low-pressure-side container (LP), a high-pressure-side container (HP), a low-pressure-side opening/closing device (3L), a high-pressure-side opening/closing device (3H), opening/closing flow paths (31, 32), and an opening/closing device control unit (5). The opening/closing device control unit (5) alternately switches the communication destination of the inertial fluid container (21) between the low-pressure-side container (LP) and the high-pressure-side container (HP) in accordance with a reduction in the volume of a fluid chamber (203), and causes hydraulic oil to flow into the high-pressure-side container (HP) by means of the inertial force generated in the inertial fluid container (21) when the hydraulic oil flows toward the low-pressure-side container (LP). The opening/closing device control unit (5) sets the switching frequency of the opening/closing devices to a frequency close to the Nth (where N is a natural number) antiresonant frequency of the flow path of the hydraulic oil.

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Inventors:

MAEKAWA SATOSHI
SUGANO NAOKI
INOUE YOSHIO
SONOBE MOTOMICHI

Application Number:

PCT/JP2018/004725

Publication Date:

August 30, 2018

Filing Date:

February 09, 2018

Export Citation:

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Assignee:

KOBE STEEL LTD (JP)
KOCHI PREFECTURAL PUBLIC UNIV CORPORATION (JP)

International Classes:

F15B1/027; F15B1/033

Foreign References:

JP2014169763A	2014-09-18
JP2014163419A	2014-09-08

Other References: