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    • 99. 发明授权
    • Refrigerating cycle
    • 制冷循环
    • US06260367B1
    • 2001-07-17
    • US09529876
    • 2000-04-21
    • Shunichi FuruyaHiroshi Kanai
    • Shunichi FuruyaHiroshi Kanai
    • F25B4100
    • F25B40/00F25B9/008F25B41/04F25B2309/061F25B2600/17F25B2600/2501F25B2700/1931F25B2700/21152F25B2700/21175
    • In a freezing cycle that utilizes a supercritical fluid as its coolant and employs an internal heat exchanger that performs heat exchange on the coolant on the outlet side of a gas cooler and on the intake side of a compressor, a means for adjustment that adjusts the quantity of heat exchange performed by the internal heat exchanger (4) is provided. The means for adjustment is constituted of a bypass passage (9) that bypasses the internal heat exchanger (4) and a flow-regulating valve (10) that adjusts the coolant flow rate in the bypass passage (9). The flow-regulating valve (10) is constituted of an electromagnetic valve, the degree of openness of which is determined based upon information with respect to the cycle state, or a bellows regulating valve that operates in correspondence to the pressure on the high-pressure side. Alternatively, the means for adjustment may perform adjustment by varying the passage length over which heat exchange is performed by the internal heat exchanger (4). Good cycle efficiency is achieved by maintaining the optimal high-pressure through cycle balance control. The freezing cycle can be temporarily protected against excessively high-pressure or excessively high discharge temperature at the compressor.
    • 在利用超临界流体作为其冷却剂并采用内部热交换器的冷冻循环中,所述内部热交换器对气体冷却器的出口侧和压缩机的进气侧的冷却剂进行热交换,调整量调节装置 提供由内部热交换器(4)进行的热交换。 用于调节的装置由绕过内部热交换器(4)的旁通通道(9)和调节旁路通道(9)中的冷却剂流量的流量调节阀(10)构成。 流量调节阀(10)由电磁阀构成,电磁阀的开度基于相对于循环状态的信息而确定,或波纹管调节阀,其对应于高压 侧。 或者,用于调节的装置可以通过改变由内部热交换器(4)进行热交换的通道长度来进行调节。 通过保持最佳的高压通过循环平衡控制实现良好的循环效率。 可以暂时保护冷冻循环,防止压缩机过度高压或过高的排出温度。
    • 100. 发明授权
    • Refrigerating device
    • 制冷装置
    • US06250099B1
    • 2001-06-26
    • US09349942
    • 1999-07-08
    • Shunichi FuruyaHiroshi Kanai
    • Shunichi FuruyaHiroshi Kanai
    • E25B4302
    • F25B1/10F25B5/04F25B9/008F25B43/02F25B2309/061F25B2341/0662F25B2400/13F25B2400/23F25B2700/19F25B2700/2109
    • In order to achieve an improvement in the efficiency of a refrigerating cycle and achieve quick and precise response to changes in the environment or the operating state while using carbon dioxide as a coolant, the refrigerating cycle according to the present invention is provided with a first expander and a second expander and further with a vapor-liquid separator provided between the first and second expanders. The components are arranged such that pressure of a vapor-phase coolant at high pressure, compressed by a compressor and cooled by a radiator, is reduced to an intermediate pressure level in a vapor-liquid two-phase range by the first expander. Then the coolant in a condition of a vapor-liquid mix is separated into a vapor-phase coolant by the vapor-liquid separator, so that only the liquid-phase coolant is expanded by the second expander, so that the vapor-phase coolant is taken into the intake side of the compressor while maintaining the intermediate pressure level. Therefore, no unnecessary energy is expended for compressing the vapor-phase coolant, and as a result, efficiency of the cycle may be improved.
    • 为了实现制冷循环的效率的提高,并且在使用二氧化碳作为冷却剂的同时实现对环境变化或操作状态的快速和精确的响应,根据本发明的制冷循环具有第一膨胀机 和第二膨胀机,并且还设置有设置在第一和第二膨胀器之间的气 - 液分离器。 这些部件被布置成使得由压缩机压缩并由散热器冷却的高压气相冷却剂的压力通过第一膨胀机降低到气液两相范围内的中间压力水平。 然后,在气 - 液混合状态下的冷却剂被汽 - 液分离器分离成气相冷却剂,使得只有液相冷却剂被第二膨胀机膨胀,使得气相冷却剂 在保持中间压力水平的同时被吸入压缩机的进气侧。 因此,为了压缩气相冷却剂没有必要的能量消耗,结果可以提高循环的效率。