公开(公告)号：US5704219A

公开(公告)日：1998-01-06

申请号：US681837

申请日：1996-07-29

申请人： Takahisa Suzuki ,  Mitsuo Inagaki ,  Sadahisa Onimaru ,  Yukikatu Ozaki ,  Toshihiro Nagata

发明人： Takahisa Suzuki ,  Mitsuo Inagaki ,  Sadahisa Onimaru ,  Yukikatu Ozaki ,  Toshihiro Nagata

IPC分类号： B60H1/00 ,  F25B13/00 ,  G05D23/00 ,  F25B41/04

CPC分类号： B60H1/00907 ,  B60H2001/00935 ,  F25B13/00 ,  F25B2400/13 ,  F25B2400/23

摘要： In an air conditioning apparatus employing a heat pump system in which a cooling evaporator and a heating condenser are disposed inside the compartment. A compressor is provided with a gas injection port, a fixed throttle for reducing pressure of refrigerant on high pressure side in a refrigerating cycle to middle pressure, and a gas-liquid separator for separating the middle pressure refrigerant of which pressure is reduced by the fixed throttle. The gaseous refrigerant separated by the gas-liquid separator is introduced into the gas injection port. In a heating operation, the refrigerant circulates through the compressor, the condenser, the fixed throttle, the gas-liquid separator, an expansion valve, an outdoor heat exchanger, and the compressor as a closed circuit, while the gaseous refrigerant separated by the gas-liquid separator is injected into the compressor through the gas injection port. As a result, when the outside air temperature is low, the heating capacity is improved.

摘要翻译： 在采用其中冷却蒸发器和加热冷凝器设置在隔间内的热泵系统的空调装置中。 压缩机设置有气体注入口，用于将制冷循环至中压的高压侧的制冷剂的压力降低的固定节气门，以及将压力降低了固定的中压制冷剂分离的气液分离器 风门。 由气液分离器分离出的气体制冷剂被引入气体注入口。 在加热运转中，制冷剂作为闭路循环通过压缩机，冷凝器，固定节流阀，气液分离器，膨胀阀，室外热交换器和压缩机，而由气体分离的气体制冷剂 液体分离器通过气体注入口注入压缩机。 结果，当外部空气温度低时，加热能力提高。