OIL SEPARATION UNIT OF FREEZER - MAEKAWA SEISAKUSHO KK

Title:

OIL SEPARATION UNIT OF FREEZER

Document Type and Number:

Japanese Patent JP2016095040

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To enable ice machine oil collected in an evaporator to be recovered by simple and low cost means.SOLUTION: An oil separation unit of a freezer comprises: an oil reservoir part provided below the evaporator; an oil return path connected to the oil reservoir part and a refrigerant intake path of a compressor; a float sensor provided along the oil return path capable of reserving insoluble ice machine oil inside and sensing a residence amount of the ice machine oil; a high pressure refrigerant introduction passage connected to the oil return path on the upstream side of the float sensor and a refrigerant discharge passage of the compressor; and a control device for returning the ice machine oil reserved in the float sensor to the refrigerant intake path by opening/closing the oil return path in accordance with the residence amount of the ice machine oil detected by the float sensor, in which the float sensor includes: a float with a specific gravity smaller than that of the ice machine oil; a casing for accommodating the float movably in a vertical direction in a reservoir space which forms the reservoir space for the ice machine oil; and a position sensor for detecting a position in a vertical direction of the float which floats by the ice machine oil inflowing the reservoir space so as to send the detection value to the control device.SELECTED DRAWING: Figure 1

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Inventors:

OSUGA ENO
TOMIYAMA YASUSHI
MATSUMOTO YUKI
ONO HIDEKI

Application Number:

JP2014229410A

Publication Date:

May 26, 2016

Filing Date:

November 12, 2014

Export Citation:

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Assignee:

MAEKAWA SEISAKUSHO KK

International Classes:

F25B43/02; F25B1/00

Domestic Patent References:

JP2001021236A	2001-01-26
JP2012102946A	2012-05-31
JPH04369355A	1992-12-22

Foreign References:

US20120117996A1

2012-05-17

Attorney, Agent or Firm:

Seishin ip patent business corporation

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