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公开(公告)号：US5400961A
公开(公告)日：1995-03-28
申请号：US211124
申请日：1994-05-03
CPC分类号： G05D23/1393
摘要： An electromechanically controlled thermostatic mixing valve (10) comprises a movable mixing valve member (114) resiliently held between a temperature responsive coiled spring (132) and a bias spring (134). The temperature responsive spring is made of a material such as a shape memory alloy (SMA) having a modulus of elasticity that varies with temperature. The bias spring is supported by an electric drive (46) controlled by an electric control circuit (32) to adjust the preload on the bias spring. In contrast to the bias spring which is subjected to deformation from its free state to its fully compressed state, the SMA spring is held in such a manner that it is subjected to a limited strain throughout the stroke of the valve member. As a result, premature fatigue of the SMA spring is avoided. Transient fluctuation in water temperature is primarily compensated for by a mechanical feedback control performed by the SMA spring. Any persistent offset of temperature is compensated for by electrical feedback control carried out by the electrical control circuit that adjust the preload on the bias spring preload such that the actual water temperature is brought to the desired temperature.
摘要翻译： PCT No.PCT / JP93 / 00999 Sec。 371日期：1994年5月3日 102（e）日期1994年5月3日PCT提交1993年7月19日PCT公布。 公开号WO94 / 02766 日期：1994年2月3日。机电控制的恒温混合阀（10）包括弹性地保持在温度响应螺旋弹簧（132）和偏压弹簧（134）之间的可移动混合阀构件（114）。 温度响应弹簧由具有随温度变化的弹性模量的形状记忆合金（SMA）的材料制成。 偏置弹簧由电气控制电路（32）控制的电驱动器（46）支撑，以调节偏置弹簧上的预载荷。 与从其自由状态变形到其完全压缩状态的偏压弹簧相反，SMA弹簧保持在阀构件整个行程中受到有限应变的作用。 结果，避免了SMA弹簧的过早疲劳。 水温瞬变波动主要由SMA弹簧进行的机械反馈控制补偿。 通过由控制电路进行的电气反馈控制来补偿温度的任何持续偏移，该电气控制电路调整偏置弹簧预载荷上的预载荷使得实际的水温达到所需温度。
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公开(公告)号：US5199639A
公开(公告)日：1993-04-06
申请号：US833427
申请日：1992-02-10
IPC分类号： B05B1/16
CPC分类号： B05B1/1645
摘要： A hand-held shower unit (12; 250; 504; 540) is disclosed which comprises a rotatable shower head (94) provided with a plurality of spray heads (132; 134; 136; 138) having different spray or water delivery characteristics. The rotatable head (94) is mounted on a shaft (122) driven by a micromotor (190) received in an inner cavity (64) which is formed in a handle casing (52; 252) by offsetting a water conduit (58). Upon pressing a control button (200), the rotatable head (94) is rotated such that water is delivered through selected one of the spray heads (132; 134; 136; 138). To establish a fluid tight seal between the rotary head (94) and the water conduit (58) while avoiding frictional contact therebetween in order to reduce the torque required for the micromotor (190) to rotate the head (94), a water pressure-responsive movable sealing member (104; 260) is arranged. Also disclosed is a shower bath system (10; 500) including in combination the hand-held shower unit ( 12; 250; 504; 540). An automatic faucet is also disclosed which is capable of automatically varying the water delivery patterns. Various other embodiments and method of use are also disclosed.
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公开(公告)号：US5038823A
公开(公告)日：1991-08-13
申请号：US442091
申请日：1989-11-28
CPC分类号： F16K47/02 , F16L55/05 , Y10T137/7801 , Y10T137/87684
摘要： Device for preventing water hammer while regulating water pressure includes valve element biasing means which substantially consists of a pressure adjusting spring with a small spring constant and a water hammer preventing spring with a large spring constant which are disposed in series in a valve casing. The valve element biasing means is capable of varying the opening area of a communicating passage between an upstream passage and a downstream passage to as to adjust the pressure in the communicating passage while preventing the occurrence of water hammer in piping water supply equipment.
摘要翻译： 用于在调节水压时防止水锤的装置包括阀元件偏压装置，其基本上由具有小弹簧常数的压力调节弹簧和具有大的弹簧常数的防水弹簧组成，其串联设置在阀壳体中。 阀元件偏压装置能够改变上游通道和下游通道之间的连通通道的开口面积，以便调节连通通道中的压力，同时防止在管道供水设备中发生水锤。
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