REFRIGERATION CYCLE APPARATUS

• Main Author: OYA AKIRA
• Format: Patent
• Language: English; Japanese
• Published: 06.08.2015
• 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

PROBLEM TO BE SOLVED: To obtain a refrigeration cycle apparatus capable of alleviating the influence of an air-side heat exchanger that is not used as an evaporator at a low outdoor temperature as compared with a conventional technique, and securing an intake pressure obtained from a geothermal-side heat exchanger used as an evaporator as compared with the conventional technique.SOLUTION: A refrigeration cycle apparatus comprises: a compressor 1; a water-refrigerant heat exchanger 51; decompression devices 8a, 8b, and 8c reducing the pressure of refrigerant; air-side heat exchanger 31; an outdoor blower 39 feeding air to the air-side heat exchanger 31; a geothermal-side heat exchanger 41; a switching device switching channels so that the air-side heat exchanger 31 or the geothermal-side heat exchanger 41 can function as an evaporator; and control means 32 controlling the switching device to connect the air-side heat exchanger 31 and the water-refrigerant heat exchanger 51 in parallel and stopping the outdoor blower 39 if the geothermal-side heat exchanger 41 functions as the evaporator. 【課題】低外気温度時に蒸発器として用いられない空気側熱交換器の影響を従来よりも低減し、蒸発器として用いられる地熱側熱交換器から得られる吸入圧力を従来よりも確保する冷凍サイクル装置を得る。【解決手段】圧縮機１と、水冷媒熱交換器５１と、冷媒を減圧する減圧装置８ａ，８ｂ，８ｃと、空気側熱交換器３１と、空気側熱交換器３１に空気を送出する室外送風機３９と、地熱側熱交換器４１と、空気側熱交換器３１又は地熱側熱交換器４１が蒸発器として機能するように流路を切り替える切替装置と、地熱側熱交換器４１が蒸発器として機能するとき、空気側熱交換器３１と水冷媒熱交換器５１とが並列に接続されるように切替装置を制御し、室外送風機３９を停止させる制御手段３２と、を備えた。【選択図】図３