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1. 发明申请

US20040025524A1 Air conditioning system 失效
标题翻译：空调系统
公开(公告)号：US20040025524A1
公开(公告)日：2004-02-12
申请号：US10635646
申请日：2003-08-07
申请人： TGK CO., LTD.
发明人： Shinji Saeki
IPC分类号： F25B001/00 , F25B049/00
CPC分类号： F04B27/1804 , F04B49/225 , F04B2027/1813 , F04B2027/1827 , F04B2027/1854 , F04B2027/1895
摘要： To provide an air conditioning system which simultaneously eliminates shortage of lubricating oil of a variable displacement compressor and degradation of cooling efficiency of the system. An air conditioning system is configured to have a variable displacement compressor under flow rate control by a proportional flow rate control solenoid valve forming a variable orifice in a discharge-side refrigerant flow passage, and a constant differential pressure valve for controlling a differential pressure (PdHnullPdL) across the variable orifice, developed depending on a flow rate Qd of refrigerant, to a constant level, and an expansion valve of a normal charge type. By providing the expansion valve of the normal charge type, it is possible to always hold refrigerant at an outlet of an evaporator in a superheated state, whereby even during low load operation, high cooling efficiency can be maintained. Further, the proportional flow rate control solenoid valve can be controlled such that it causes refrigerant to flow at a minimum flow rate required for circulation of oil in response to an external signal. This makes it possible to prevent the variable displacement compressor from falling short of lubricating oil during the low load operation.
摘要翻译：提供一种同时消除可变排量压缩机的润滑油不足和系统冷却效率降低的空调系统。一种空调系统，其特征在于，具有通过在排出侧制冷剂流路中形成可变孔的比例流量控制电磁阀的流量控制下的可变排量压缩机和用于控制压差的恒定差压阀（PdH -PdL），其根据制冷剂的流量Qd而变化到恒定水平，并且具有正常充电类型的膨胀阀。通过设置正常充电型的膨胀阀，可以将蒸发器的出口处的制冷剂始终保持在过热状态，由此即使在低负荷运转时也能够保持高的冷却效率。此外，可以控制比例流量控制电磁阀，使得其响应于外部信号使制冷剂以以循环油所需的最小流量流动。这使得可以在低负载运行期间防止可变排量压缩机在润滑油下降。

2. 发明申请

US20010027656A1 Expansion valve 失效
标题翻译：膨胀阀
公开(公告)号：US20010027656A1
公开(公告)日：2001-10-11
申请号：US09788993
申请日：2001-02-19
申请人： TGK Co., Ltd.
发明人： Hisatoshi Hirota , Shinji Saeki , Takashi Kobayashi
IPC分类号： F25B041/00
CPC分类号： F25B41/062 , B29C45/14467 , B29L2031/7506 , F25B2341/0683 , F25B2500/21 , Y10T137/7036
摘要： In an expansion valve the pressure vessel of which is constituted by a reduced number of parts and which does not require seal members a valve unit is surrounded by first and second half shells which in turn are surrounded by a pressure vessel formed as a one-piece body by molding resin by an insert molding process. Since the resin constituting the resin molded one-piece pressure vessel simultaneously form internal sealing member structures no additional seal members are required to be positioned and mounted. The first and second half shells are shaped such that the necessary refrigerant passages for the valve unit are defined in communication with connection holes of the pressure vessel.
摘要翻译：在膨胀阀中，其压力容器由减少数量的部件构成，并且不需要密封构件，阀单元被第一和第二半壳包围，第一和第二半壳又由形成为一体的压力容器包围通过嵌件成型工艺模制树脂。由于构成树脂成型的一体式压力容器的树脂同时形成内部密封构件结构，因此不需要定位和安装附加的密封构件。第一和第二半壳形状使得用于阀单元的必要制冷剂通道被限定为与压力容器的连接孔连通。

3. 发明申请

US20040003603A1 Method of controlling refrigeration cycle 失效
公开(公告)号：US20040003603A1
公开(公告)日：2004-01-08
申请号：US10612991
申请日：2003-07-07
申请人： TGK CO., LTD.
发明人： Shinji Saeki , Hisatoshi Hirota
IPC分类号： B60H001/32 , F25B041/04 , F25B001/00 , F25B049/00
CPC分类号： B60H1/3216 , B60H1/3208
摘要： The object of the present invention is to provide a method of controlling a refrigeration cycle such that maximum refrigerating capacity can be educed when the refrigeration cycle is started, the driving torque of a variable displacement compressor can be reduced when an automotive vehicle performs standing start or acceleration, and the refrigeration cycle can be operated with the maximum efficiency in a steady operating condition. Electric signals for control of a capacity control valve 5 for controlling the capacity of a variable displacement compressor and an electronic expansion valve are directly measured, and the differential pressure between a high pressure-side refrigerant pressure and a low pressure-side refrigerant pressure in the refrigeration cycle and the flow rate of refrigerant flowing therethrough are estimated based on the electric signals, whereby the energy of the refrigeration cycle is estimated, and further by using an engine rotational speed, the driving torque of the variable displacement compressor is estimated. This makes it possible to carry out energy control for as maximum refrigerating capacity operation, maximum efficiency operation, required minimum refrigerating capacity operation, and so forth, whereby it is possible to carry out not only fuel consumption saving operation but also energy control for reducing burden on the engine e.g. during idling and acceleration of the engine.

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