AIR CONDITIONER

• Main Authors: TSUCHIYA YUJI, FUNADA KAZUYA, ITAKURA SHUNJI, FUJI TOSHIYUKI
• Format: Patent
• Language: English; Japanese
• Published: 25.01.2018
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; RANGES; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; VENTILATING; WEAPONS

PROBLEM TO BE SOLVED: To provide an air conditioner capable of reducing discomfort that a user has even if a refrigerant filling amount decreases after replacement with a combustible refrigerant.SOLUTION: A CPU 210 is configured to place, when a total requested capability as the total of requested capabilities of indoor units 5a-5t exceeds a threshold requested capability, indoor units as many as indoor units complying with the threshold requested capability in operation, and stops the remaining indoor units. Then stopped indoor unit rotation control to periodically change indoor units to be stopped is performed. Specifically, the CPU 210 is configured to stop, when the total requested capability exceeds the threshold requested capability, the indoor units 5q-5t in a group E for a predetermined time. After the predetermined time passes, the CPU 210 starts the indoor units 5q-5t in the group E and also stops the indoor units 5m-5p in a group D for the predetermined time. The indoor units in groups are stopped thereafter each for the predetermined time in the order of a group C, a group B, and a group A, and after the indoor units 5a-5d in the group A are stopped for the predetermined time, the indoor units 5q-5t in the group E are stopped again for the predetermined time.SELECTED DRAWING: Figure 2 【課題】可燃性冷媒に置き換えて冷媒充填量が減少しても使用者の不快感を低減できる空気調和装置を提供する【解決手段】ＣＰＵ２１０は、室内機５ａ〜５ｔでの要求能力の合計である合計要求能力が閾要求能力を超えた場合は、閾要求能力に対応する台数の室内機を運転し残る室内機を停止する。そして、停止する室内機を定期的に変更する停止室内機ローテーション制御を行う。具体的には、ＣＰＵ２１０は、合計要求能力が閾要求能力を超えた場合、まず、Ｅグループの室内機５ｑ〜５ｔを所定時間停止する。所定時間が経過すれば、ＣＰＵ２１０は、Ｅグループの室内機５ｑ〜５ｔを起動するとともにＤグループの室内機５ｍ〜５ｐを所定時間停止する。以降、Ｃグループ、Ｂグループ、Ａグループの順に各グループの室内機を所定時間ずつ停止し、Ａグループの室内機５ａ〜５ｄを所定時間停止した後は再びＥグループの室内機５ｑ〜５ｔを所定時間停止する。【選択図】図２