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公开(公告)号：US20050274123A1
公开(公告)日：2005-12-15
申请号：US10791497
申请日：2004-03-02
申请人： Robert Smith , Matthew Poese , Ray Wakeland , Steven Garrett
发明人： Robert Smith , Matthew Poese , Ray Wakeland , Steven Garrett
CPC分类号： F02G1/0435 , F02G2243/54 , F03G7/002 , F25B9/145 , F25B2309/001 , F25B2309/1404 , F25B2309/1407
摘要： A thermocoustic device includes a housing with a thermal core supported in the housing and having a first and a second surface. The thermal core includes a first heat exchanger defining the first surface of the thermal core and a second heat exchanger defining the second surface of the thermal core. A main chamber is in fluid communication with the first surface of the thermal core and a secondary multiplier chamber is in fluid communication with the second surface of the thermal core. A working volume of a gaseous working fluid fills the main chamber, the multiplier chamber, and the thermal core at a pressure. An equilibrium pressure is defined as the pressure of the working volume of gaseous working fluids with the thermoacoustic device is in a non-operating mode. The main chamber includes a first oscillating member that is operable when the thermoacoustic device is in an operating mode to oscillate such that the pressure in both the main chamber and in the multiplier chamber is oscillated between a peak pressure greater than the equilibrium pressure and a minimum pressure less than the equilibrium pressure. A main pressure amplitude is defined as one-half of the difference between the peak pressure and the minimum pressure in the main chamber. The secondary multiplier chamber includes a second oscillating member that is operable when the thermoacoustic device is in the operating mode to oscillate such that the pressure in the multiplier chamber is oscillated between a peak pressure greater than the equilibrium pressure and a minimum pressure less than the equilibrium pressure. A multiplier pressure amplitude is defined as one-half of the difference between the peak pressure and the minimum pressure in the multiplier chamber. The first and second oscillating members oscillate at substantially the same frequency and such that the pressure oscillations in the main chamber and the multiplier chamber are substantially in phase with each other. The multiplier pressure amplitude is greater than the main pressure amplitude.
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公开(公告)号：US07525440B2
公开(公告)日：2009-04-28
申请号：US11142749
申请日：2005-06-01
CPC分类号： G10L21/0208
摘要： A person monitoring system, such as a baby monitor a monitored unit including a microphone for transducing radiated sound waves and sound waves emanating from the person to a received audio signal and circuitry for removing from the received audio signal a portion of the received audio signal corresponding to the radiated sound waves to provide an audio signal corresponding to the sound waves emanating from the person.
摘要翻译： 个人监控系统，例如婴儿监视器，监视单元包括用于传导辐射声波的麦克风和从人发送到接收到的音频信号的声波，以及用于从接收到的音频信号中去除接收到的音频信号的一部分的电路对应 以提供对应于从人发出的声波的音频信号。
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公开(公告)号：US20060273914A1
公开(公告)日：2006-12-07
申请号：US11142749
申请日：2005-06-01
IPC分类号： G08B23/00
CPC分类号： G10L21/0208
摘要： A person monitoring system, such as a baby monitor a monitored unit including a microphone for transducing radiated sound waves and sound waves emanating from the person to a received audio signal and circuitry for removing from the received audio signal a portion of the received audio signal corresponding to the radiated sound waves to provide an audio signal corresponding to the sound waves emanating from the person.
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公开(公告)号：US20050028535A1
公开(公告)日：2005-02-10
申请号：US10942417
申请日：2004-09-16
申请人： Matthew Poese , Robert Smith , Ray Wakeland , Steven Garrett
发明人： Matthew Poese , Robert Smith , Ray Wakeland , Steven Garrett
CPC分类号： F25B9/145 , F02G1/0435 , F02G2243/54 , F02G2270/005 , F03G7/002 , F25B2309/001 , F25B2309/1404 , F25B2309/1407
摘要： According to one embodiment of the present invention, a thermoacoustic device has a complaint enclosure which includes a rigid portion and a compliant portion. The compliant portion includes an oscillating member and a flexure seal with a pair of ends and a flexure body extending between the ends. One of the ends is sealed to the rigid portion and the other end is sealed to the oscillating member. The flexure seal has an average cross-sectional area and an end-to-end equilibrium length. A flexure volume is defined as the product of the average cross-sectional area and the end-to-end equilibrium length. A thermal core is disposed in the complaint enclosure and includes at least a first and a second heat exchanger. A working volume of gaseous working fluid fills the complaint enclosure. The working volume of gaseous working fluid has an equilibrium pressure. A motor is operable to oscillate the oscillating member such that the end-to-end length of the flexure seal is increased and decreased with respect to the equilibrium length. Therefore, the pressure of the working volume of gaseous working fluid is oscillated between a peak pressure greater than the equilibrium pressure and a minimum pressure less than the equilibrium pressure. In some embodiments, the working volume is less than or equal to four times the flexure volume, while in other embodiments, the working volume is less than or equal to two times or one times the flexure volume.
摘要翻译： 根据本发明的一个实施例，热声装置具有包括刚性部分和柔顺部分的投诉机壳。 柔性部分包括摆动构件和具有一对端部的弯曲密封件和在端部之间延伸的挠曲体。 其中一个端部被密封到刚性部分，另一端密封到振荡部件。 挠性密封件具有平均横截面面积和端对端平衡长度。 弯曲体积被定义为平均横截面积和端对端平衡长度的乘积。 热芯设置在投诉箱中，并且包括至少第一和第二热交换器。 气体工作液体的工作量填满投诉箱。 气态工作液体的工作体积具有平衡压力。 电动机可操作以使摆动构件振荡，使得挠曲密封件的端对端长度相对于平衡长度增加和减小。 因此，气体工作流体的工作体积的压力在大于平衡压力的峰值压力和小于平衡压力的最小压力之间振荡。 在一些实施例中，工作体积小于或等于弯曲体积的四倍，而在其它实施例中，工作体积小于或等于挠曲体积的两倍或一倍。
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