HEAT PUMP HEATING DEVICE

• Main Author: IMAI SEISHI
• Format: Patent
• Language: English; Japanese
• Published: 02.11.2015
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL; 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 a technology capable of solving a state in which a degree of dryness of a refrigerant sucked into a compressor is low, and the refrigerant discharged from the compressor is in a gas-liquid two-phase state, in a heat pump heating device.SOLUTION: A heat pump heating device which this specification discloses includes: a condenser for condensing a refrigerant by exchanging heat between the refrigerant and a heated fluid; a decompressor for decompressing the refrigerant from the condenser; an evaporator for evaporating the refrigerant from the decompressor; a compressor for pressurizing the refrigerant from the evaporator and sending it out to the condenser; first temperature detection means arranged in a refrigerant flow passage between the compressor and the condenser and for detecting the temperature of the refrigerant; and second temperature detection means arranged in the refrigerant flow passage in the condenser and for detecting the temperature of the refrigerant. The heat pump heating device performs refrigerant dryness degree increase control for increasing the degree of dryness of the refrigerant sucked into the compressor, in the case where a difference between the detection temperature of the first temperature detection means and the detection temperature of the second temperature detection means falls short of a predetermined lower limit value. 【課題】ヒートポンプ加熱装置において、圧縮機に吸い込まれる冷媒の乾き度が低く、圧縮機から吐出される冷媒が気液二相状態にある場合に、その状態を解消することが可能な技術を提供する。【解決手段】本明細書が開示するヒートポンプ加熱装置は、冷媒と被加熱流体との間で熱交換して冷媒を凝縮させる凝縮器と、凝縮器からの冷媒を減圧する減圧器と、減圧器からの冷媒を蒸発させる蒸発器と、蒸発器からの冷媒を加圧して凝縮器へ送り出す圧縮機と、圧縮機と凝縮器の間の冷媒流路に配置されており、冷媒の温度を検出する第１温度検出手段と、凝縮器内の冷媒流路に配置されており、冷媒の温度を検出する第２温度検出手段を備えている。そのヒートポンプ加熱装置は、第１温度検出手段の検出温度と第２温度検出手段の検出温度の差が所定の下限値に満たない場合に、圧縮機に吸い込まれる冷媒の乾き度を上昇させる冷媒乾き度上昇制御を行う。【選択図】図１