HEAT SOURCE UNIT AND REFRIGERATION CYCLE DEVICE

• Main Authors: KOJIMA MAKOTO, YAMAGUCHI MASAKI, KONDO SHIGENORI
• Format: Patent
• Language: English; Japanese
• Published: 26.02.2024
• 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

To provide a heat source unit capable of setting a refrigeration circuit into a connection state to simply collect refrigerant, and a refrigeration cycle device.SOLUTION: An outdoor unit 20 includes a bypass flow path 60, a gas closing valve 28, and a liquid closing valve 29. A second refrigerant distribution pipe 12 is a flow path connecting the suction side of a compressor 21 to a four-way switching valve 22, a third refrigerant distribution pipe 13 is a flow path connecting an outdoor heat exchanger 23 to the four-way switching valve 22, a first refrigerant distribution pipe 11 is a flow path connecting the gas closing valve 28 to the four-way switching valve 22, and each of a fourth refrigerant distribution pipe 14 and a fifth refrigerant distribution pipe 15 is a flow path connecting the outdoor heat exchanger 23 to the liquid closing valve 29. The four-way switching valve 22 is switchable into one of a cooling connection state and a heating connection state. A bypass flow path 60 is a flow path connecting the fourth refrigerant distribution pipe 14 and the fifth refrigerant distribution pipe 15 to the second refrigerant distribution pipe 12, and has a manual on-off valve 60a.SELECTED DRAWING: Figure 1 【課題】冷媒回路について簡便に冷媒回収が可能な接続状態にすることが可能な熱源ユニットおよび冷凍サイクル装置を提供する。【解決手段】バイパス流路６０とガス閉鎖弁２８と液閉鎖弁２９とを有する室外ユニット２０であって、第２冷媒配管１２は、圧縮機２１の吸入側と四路切換弁２２を接続する流路であり、第３冷媒配管１３は、室外熱交換器２３と四路切換弁２２換を接続する流路であり、第１冷媒配管１１は、ガス閉鎖弁２８と四路切換弁２２を接続する流路であり、第４冷媒配管１４および第５冷媒配管１５は、室外熱交換器２３と液閉鎖弁２９を接続する流路であり、四路切換弁２２は、冷房接続状態と暖房接続状態のいずれかに切り換え可能であり、バイパス流路６０は、第４冷媒配管１４および第５冷媒配管１５と第２冷媒配管１２を接続する流路であり、手動開閉弁６０ａを有している。【選択図】図１