REFRIGERATION CYCLE DEVICE AND LIQUID HEATING DEVICE INCLUDING THE SAME

To provide a refrigeration cycle device and a liquid heating device including the same capable of suppressing deterioration of heating capacity during a heating operation in a use side heat exchanger even when the heating operation in the use side heat exchanger is executed after execution of a defr...

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Bibliographic Details
Main Authors YAMAOKA YOSHIKI, IMAGAWA TSUNEKO, YOSHIDA TADAO
Format Patent
LanguageEnglish
Japanese
Published 12.11.2020
Subjects
BLASTING
COMBINED HEATING AND REFRIGERATION SYSTEMS
HEAT PUMP SYSTEMS
HEATING
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
REFRIGERATION MACHINES, PLANTS OR SYSTEMS
REFRIGERATION OR COOLING
WEAPONS
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Summary:To provide a refrigeration cycle device and a liquid heating device including the same capable of suppressing deterioration of heating capacity during a heating operation in a use side heat exchanger even when the heating operation in the use side heat exchanger is executed after execution of a defrosting operation of a heat source side heat exchanger is completed.SOLUTION: A refrigeration cycle device includes: a heating operation mode of heating a use side heating medium in a use side heat exchanger 22 by using a refrigerant discharged from a compression mechanism 21; and a defrosting operation mode of defrosting a heat source side heat exchanger 24 by using a refrigerant discharged from the compression mechanism 21. In the heating operation mode executed after completion of execution of the defrosting operation mode, a control device 4 sets an opening of a first expansion device 23 and an opening of a second expansion device 31 to values that cause a refrigerant flow rate flowing in the first expansion device 23 to become larger than that flowing in the second expansion device 31 at least for a predetermined period during execution of the heating operation mode, and operates an air blower 29 supplying air to the heat source side heat exchanger 24.SELECTED DRAWING: Figure 1 【課題】熱源側熱交換器の除霜運転実行終了後の利用側熱交換器における加熱運転の実行時においても、利用側熱交換器における加熱運転時の加熱能力の低下を抑制できる冷凍サイクル装置およびそれを備えた液体加熱装置を提供すること。【解決手段】圧縮機構２１から吐出された冷媒により、利用側熱交換器２２において利用側熱媒体を加熱する加熱運転モードと、圧縮機構２１から吐出された冷媒により、熱源側熱交換器２４の除霜を行う除霜運転モードとを有し、除霜運転モードの実行終了後に実行される加熱運転モードにおいて、制御装置４は、加熱運転モードの実行中、少なくとも所定期間は、第１膨張装置２３を流れる冷媒流量が、第２膨張装置３１を流れる冷媒流量より多くなる値に、第１膨張装置２３の開度と第２膨張装置３１の開度を設定し、熱源側熱交換器２４に空気を供給する送風装置２９を運転させる冷凍サイクル装置。【選択図】図１
Bibliography:Application Number: JP20190089181