公开(公告)号：EP2581242A1

公开(公告)日：2013-04-17

申请号：EP11792303.7

申请日：2011-05-27

申请人： Sanden Corporation

发明人： ISHIZEKI, Tetsuya ,  INOUE, Atsuo ,  TSUBOI, Masato ,  SUZUKI, Kenichi ,  TAGAMI, Shinji

IPC分类号： B60H1/22 ,  F25B49/02

CPC分类号： B60H1/3225 ,  B60H1/00585 ,  F25B49/005 ,  F25B2700/1931 ,  F25B2700/1933

摘要： In a vehicle air-conditioning device, refrigerant leakage is diagnosed precisely without any restrictions from an operating condition of the air-conditioning device. When the operating condition of the vehicle air-conditioning device is stable, a threshold value Th for determination of refrigerant leakage is set based on an outlet pressure Pd and an inlet pressure Ps of a compressor. Furthermore, a volume flow Gr in that refrigerant pipe running from a condenser to an expansion valve through which the refrigerant circulates in a liquid state is detected. When it is determined that the volume flow Gr exceeds the threshold value Th for determination of refrigerant leakage, a diagnosis result (alarm) indicating that the refrigerant leaks is output.

摘要翻译： 在车辆空调装置中，从空调装置的运转状态无任何限制地精确地诊断制冷剂泄漏。 当车辆空调装置的运行状态稳定时，基于压缩机的出口压力Pd和入口压力Ps来设定用于确定制冷剂泄漏的阈值Th。 此外，检测从冷凝器流向制冷剂以液态循环的膨胀阀的制冷剂管的体积流量Gr。 当确定体积流量Gr超过用于确定制冷剂泄漏的阈值Th时，输出表示制冷剂泄漏的诊断结果（报警）。

公开(公告)号：EP2460676A1

公开(公告)日：2012-06-06

申请号：EP10804286.2

申请日：2010-07-20

申请人： Sanden Corporation

发明人： ISHIZEKI, Tetsuya ,  INOUE, Atsuo ,  TSUBOI, Masato ,  SUZUKI, Kenichi

IPC分类号： B60H1/32 ,  F04B49/06 ,  F25B49/02

CPC分类号： F04B49/06 ,  B60H1/3216 ,  B60H2001/3273 ,  F04B2201/1202 ,  F25B40/02 ,  F25B2339/044 ,  F25B2339/0445 ,  F25B2341/0662 ,  F25B2500/19 ,  F25B2700/133 ,  F25B2700/171 ,  F25B2700/1933 ,  F25B2700/195

摘要： Provided is a refrigeration cycle suitable for an air conditioning system for vehicles, wherein a flow rate of refrigerant which is used to estimate a torque of a compressor can be precisely estimated by accurately detecting a difference between pressures at upstream and downstream sides of an orifice having a high correlation with the refrigerant flow rate, and ultimately, the torque of the compressor can be precisely estimated, and the estimation can be achieved while achieving space saving and cost down. Disclosed is a refrigeration cycle which has a subcool condenser integrally provided with a condensing part for refrigerant, a liquid receiver and a subcooling part, and wherein an orifice for throttling the flow of refrigerant which has passed through the condensing part of the subcool condenser is disposed, a pressure difference detection means capable of detecting a difference between pressures at upstream and downstream sides of the orifice is provided, and provided are a refrigerant flow rate estimation means for estimating a flow rate of the refrigerant with reference to the detected pressure difference and a compressor torque estimation means for estimating a torque of the compressor with reference to the estimated flow rate of the refrigerant.

摘要翻译： 本发明提供一种适用于车辆的空调系统的制冷循环，其中，通过精确地检测在孔口的上游侧和下游侧的压力之间的差异，可以精确地估计用于估计压缩机的扭矩的制冷剂的流量， 与制冷剂流量的高度相关性，并且最终可以精确地估计压缩机的转矩，并且可以在实现空间节省和降低成本的同时实现估计。 本发明公开了一种制冷循环，其具有与制冷剂的冷凝部分，储液器和过冷部分一体设置的过冷凝器，并且其中设置了用于节流已经通过过冷凝器的冷凝部分的制冷剂的流动的孔口 设置能够检测节流孔的上游侧和下游侧的压力差的压力差检测单元，并且设置有制冷剂流量推定单元，该制冷剂流量推定单元参照检测出的压力差推定制冷剂的流量， 压缩机扭矩估算装置，用于参照估算的制冷剂流量估算压缩机的扭矩。

公开(公告)号：EP2420399A1

公开(公告)日：2012-02-22

申请号：EP10777573.6

申请日：2010-05-19

申请人： Sanden Corporation

发明人： ISHIZEKI, Tetsuya ,  HIGUCHI, Teruo ,  AMADA, Norimasa

IPC分类号： B60H1/32 ,  F04B49/06 ,  F25B1/00

CPC分类号： F04B27/18 ,  B60H2001/3238 ,  B60H2001/325 ,  B60H2001/3251 ,  B60H2001/3273 ,  F04B27/14 ,  F04B49/06 ,  F04B49/065 ,  F04B49/08 ,  F04B2203/0207 ,  F04B2205/05

摘要： [Summary]
[Purpose] To provide a variable displacement compressor driving torque calculation device easily adaptable to vehicle designs, and thus, highly versatile, and an automotive air-conditioning system equipped with this device.
[Solution] The driving torque calculation device comprises a radiator-inlet refrigerant pressure sensor (46) for detecting pressure of the refrigerant at an inlet of a radiator (24), a radiator-outlet refrigerant pressure sensor (48) for detecting pressure of the refrigerant at an outlet of the radiator (24), a rotational speed detection means for detecting rotational speed of the variable displacement compressor (100), a suction pressure detection means for detecting suction pressure with which the variable displacement compressor (100) sucks the refrigerant, and a calculation means for calculating driving torque on the variable displacement compressor (100) on the basis of the pressures of the refrigerant at the inlet and the outlet of the radiator (24), the rotational speed of the variable displacement compressor (100) and the suction pressure.

摘要翻译： [总结] [目的]提供一种可变容量压缩机驱动扭矩计算装置容易地适用于车辆的设计，并且因此，通用性高，而在配备有该装置的汽车空调系统。 [解决方法]该驱动转矩计算装置包括用于在在散热器（24），散热器出口制冷剂压力传感器（48）的入口，用于的检测压力检测制冷剂的压力的散热器入口制冷剂压力传感器（46） 制冷剂在在散热器（24）的出口，一个转速检测装置，用于检测所述可变排量型压缩机（100）的转速，吸入压力检测装置，用于检测吸入压力与该可变容量压缩机（100）吸入的制冷剂 和计算装置，用于在制冷剂的入口处的压力和散热器（24），该可变容量压缩机的旋转速度（100）的出口的基础上的可变容量压缩机（100），计算驱动转矩 与吸入压力。