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1. (CN108369046) REFRIGERATION CYCLE DEVICE

Office : China
Application Number: 201580085093.5 Application Date: 11.12.2015
Publication Number: 108369046 Publication Date: 03.08.2018
Publication Kind : A
Prior PCT appl.: Application Number:PCTJP2015084855 ; Publication Number: Click to see the data
IPC:
F25B 47/02
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25
REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
B
REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
47
Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
02
Defrosting cycles
CPC:
F25B 47/02
Applicants: MITSUBISHI ELECTRIC CORP.
三菱电机株式会社
Inventors: ISHIHARA NOBUYA
石原宽也
YASHIRO TAKANORI
八代崇宪
MIENO JUN
三重野纯
Agents: 中国国际贸易促进委员会专利商标事务所 11038
Priority Data:
Title: (EN) REFRIGERATION CYCLE DEVICE
(ZH) 制冷循环装置
Abstract: front page image
(EN) Provided is a refrigeration cycle device having high reliability by reducing the amount of liquid returning to a compressor while achieving a reduction in hot gas defrost time. This refrigeration cycle device is equipped with a refrigerant circuit where a compressor, condensers, an expansion valve, and an evaporator are connected in series by piping. The refrigeration cycle device is equipped with: a hot gas bypass piping which directly connects between the discharge side of the compressor and the evaporator; a flow rate adjuster which is installed on the hot gas bypass piping and adjusts theflow rate of a refrigerant; a refrigerant state detection means for detecting the discharge superheat degree of the refrigerant discharged from the compressor and the suction pressure of the compressor; and a defrost control means for causing the flow rate adjuster to close during normal cooling operation, and causing the flow rate of the refrigerant to increase/decrease, using the flow rate adjuster, according to the discharge superheat degree and the suction pressure detected by the refrigerant state detection means during defrost operation. At the start of the defrost operation, the defrostcontrol means controls the flow rate adjuster so that the refrigerant having a first refrigerant flow rate flows through the hot gas bypass piping. During the defrost operation, if the discharge superheat degree is greater than a preset superheat degree and the suction pressure is lower than a preset pressure, the defrost control means controls the flow rate adjuster so that the flow rate of therefrigerant flowing through the hot gas bypass piping becomes higher than the first refrigerant flow rate.
(ZH) 提供一种在实现热气除霜时间的缩短的同时,通过使向压缩机的液体返回量减少而使得可靠性较高的制冷循环装置。本发明的制冷循环装置具备利用配管将压缩机、冷凝器、膨胀阀及蒸发器串联连接而成的制冷剂回路。该制冷循环装置具备:热气旁通配管,其将从压缩机的排出侧到蒸发器直接连接;流量调整器,其设置在热气旁通配管上并调整制冷剂的流量;制冷剂状态检测单元,其检测从压缩机排出的制冷剂的排出过热度及压缩机的吸入压力;以及除霜控制单元,其在通常冷却运转时使流量调整器关闭,在除霜运转时根据由制冷剂状态检测单元检测出的排出过热度及吸入压力,利用流量调整器使制冷剂的流量增减。除霜控制单元在除霜运转开始时,对流量调整器进行控制,以使第一制冷剂流量的制冷剂在热气旁通配管中流动,在除霜运转期间,在所述排出过热度比设定过热度大且所述吸入压力比设定压力低的情况下,对流量调整器进行控制,以使在所述热气旁通配管中流动的制冷剂量相比于所述第一制冷剂流量增加。
Also published as:
TH1801003057AWO/2017/098669