Title:
冷凍サイクル装置
Document Type and Number:
Japanese Patent JP5659560
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To complete defrosting in a short time while protecting a compressor during defrosting operation, relating to a refrigerating cycle device in which the defrosting operation of an evaporator is performed by increasing an opening degree of a variable aperture mechanism.SOLUTION: During defrosting operation, an overheating degree estimating means (S65) estimates an overheating degree of a sucked-in coolant of a compressor 14 based on compressor-discharged coolant pressure Pd and a compressor-discharged coolant temperature Td. In order that the estimated value comes within a predetermined reference dry range, a variable aperture control means 21a changes an open degree of an ejector 17 which is a variable aperture mechanism. By this, the problem of liquid compression with the compressor 14 can be avoided, and defrosting can be completed in a short time since the overheating degree of the sucked-in coolant of the compressor 14 does not rise unnecessarily.
More Like This:
| JPS62223548 | DEFROSTING CONTROL UNIT OF AIR CONDITIONER |
| JPH02275261 | FREEZING CYCLE |
Inventors:
大矢 直弘
Application Number:
JP2010123274A
Publication Date:
January 28, 2015
Filing Date:
May 28, 2010
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F25B47/02; F25B1/00; F25B5/04; F25B41/00
Attorney, Agent or Firm:
Patent business corporation ゆうあい patent firm