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1. JP2016106211 - AIR CONDITIONER

Office
Japan
Application Number 2016009098
Application Date 20.01.2016
Publication Number 2016106211
Publication Date 16.06.2016
Grant Number 6161741
Grant Date 23.06.2017
Publication Kind B2
IPC
F25B 47/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
47Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
02Defrosting cycles
F24F 11/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
24HEATING; RANGES; VENTILATING
FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
11Control or safety arrangements
02Arrangement or mounting of control or safety devices
F25B 1/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
1Compression machines, plant or systems with non-reversible cycle
F25B 5/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
5Compression machines, plant, or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
02arranged in parallel
F25B 41/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
41Fluid-circulation arrangements, e.g. for transferring liquid from evaporator to boiler
04Disposition of valves
Applicants MITSUBISHI ELECTRIC CORP
三菱電機株式会社
Inventors WAKAMOTO SHINICHI
若本 慎一
TAKENAKA NAOFUMI
竹中 直史
YAMASHITA KOJI
山下 浩司
MORIMOTO OSAMU
森本 修
TAKASHITA HIROBUMI
▲高▼下 博文
Agents 特許業務法人きさ特許商標事務所
Title
(EN) AIR CONDITIONER
(JA) 空気調和装置
Abstract
(EN)

PROBLEM TO BE SOLVED: To provide an air conditioner which can improve energy efficiency and heating capacity in a simultaneous operation of a heating operation and a defrosting operation by utilizing a main compressor.

SOLUTION: By a first flow passage switching device A, one part of a refrigerant discharged from an injection type compressor 1 is allowed to pass through first bypass piping 21, and the temperature of the refrigerant is decreased by reducing pressure by a first bypass flow control valve, and then, out of a plurality of outdoor heat exchangers, the refrigerant is supplied to an outdoor heat exchanger 9b to be defrosted and the refrigerant is condensed while melting frost. By a second flow passage switching device B, one part of the refrigerant supplied to the outdoor heat exchanger 9b to be defrosted is allowed to flow into second bypass piping 31, and it is allowed to flow into the injection type compressor 1 from an injection port.

SELECTED DRAWING: Figure 4

COPYRIGHT: (C)2016,JPO&INPIT


(JA)

【課題】主圧縮機を利用した暖房運転とデフロスト運転の同時運転に際し、エネルギー効率の向上と暖房能力の向上が可能な空気調和装置を提供する。
【解決手段】第1の流路切替装置Aにより、インジェクション式圧縮機1から吐出された冷媒の一部を第1のバイパス配管21を通過させ、第1バイパス流量制御弁で減圧させることにより冷媒の温度を低くしたのちに、複数の室外熱交換器のうち、デフロスト対象の室外熱交換器9bに供給して霜を融かしながら冷媒を凝縮させ、第2の流路切替装置Bにより、デフロスト対象の室外熱交換器9bに供給された冷媒の一部を第2のバイパス配管31に流入させて、インジェクションポートからインジェクション式圧縮機1に流入させるものである。
【選択図】図4