专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO0199134A3 A PRESSURE SWITCH PROVIDED WITH A THERMAL CUT-OUT 审中-公开
标题翻译：一个带切换开关的压力开关
公开(公告)号：WO0199134A3
公开(公告)日：2002-03-14
申请号：PCT/EP0106908
申请日：2001-06-19
申请人： NE MA S P A , ARRABITO LORENZO
发明人： ARRABITO LORENZO
IPC分类号： H01H35/24 , H01H35/34 , H01H37/54 , H01H71/62
CPC分类号： H01H35/24 , H01H35/34 , H01H37/5409 , H01H71/62
摘要： A pressure switch for a compressor or similar apparatus which can supply a fluid under pressure and is driven by an electric motor, comprises a support structure (1), a diaphragm (4) which is fixed to the support structure (1) and is intended to be exposed to the pressurized fluid, electrical contacts (9, 10, 11, 12) mounted on the support structure (1) and arranged for movement towards and away from one another between a position of closure and a position of opening of an electrical-supply circuit of the electric motor, a manually-operated control member (3) movable between two positions in which the electrical contacts are in the positions of opening and of closure of the electrical circuit, and a lever mechanism (14) operatively associated with the diaphragm (4) and with the electrical contacts in a manner such that, when a pressure above a predetermined threshold value is applied to the diaphragm, the lever mechanism brings about movement of the electrical contacts to the opening position, and is characterized in that it comprises a temperature-sensitive thermal cut-out (17) which is mounted on the support structure (1), in series with the electrical supply circuit of the motor, and is arranged to open the electrical-supply circuit automatically when the temperature exceeds a predetermined value, the cut-out being operable manually in order to be reset to a closure position which is stable when the temperature is below the predetermined value, and the cut-out being operatively associated with the control member (3) in a manner such that the cut-out is reset to its closure position as a result of the movement of the control member to its position which brings about opening of the electrical contacts.
摘要翻译：一种用于压缩机或类似设备的压力开关，其可以提供压力下的流体并由电动机驱动，包括支撑结构（1），固定到支撑结构（1）上的隔膜（4）暴露于加压流体，电触头（9,10,11,12），其安装在支撑结构（1）上并被布置成在封闭件的位置和电气开口的位置之间彼此移动和移开电动机的供电电路，手动操作的控制构件（3），其可在两个位置之间移动，其中电触点处于电路的打开和闭合位置;以及杠杆机构（14），其可操作地与隔膜（4）和电触点的方式使得当高于预定阈值的压力施加到隔膜时，杠杆机构引起电触头到开口p的移动并且其特征在于，它包括安装在支撑结构（1）上的与电动机的电源电路串联的温度敏感的热切口（17），并且被布置成打开电 - 当温度超过预定值时自动地供应电路，切断可手动操作，以便复位到当温度低于预定值时是稳定的闭合位置，并且切口与控制器可操作地相关联构件（3）以使得由于控制构件移动到其导致电触点的打开的位置的结果而将切口重置到其闭合位置的方式。

IPRDB

热门服务

关于我们

友情链接

联系方式