摘要:
Provided acoustic devices include an external housing defining an expansion chamber and a wall extending through and partitioning the expansion chamber into a central chamber and a peripheral chamber adjacent the central chamber, wherein an inlet and outlet communicate with the central chamber, and wherein the wall includes a plurality of apertures formed therethrough to allow air movement to and from the central and expansion chambers, the plurality of apertures sized to provide an average flow resistance ranging from 100 MKS Rayls to 5000 MKS Rayls. The acoustic devices advantageously show significant sound attenuation while streamlining air flow to reduce pressure drop across the expansion chamber.
摘要:
A sound insulation process comprises (a) providing at least one sound barrier comprising at least one composite resonator element; and (b) placing the at least one sound barrier in at least one gas stream that is at least partially enclosed.
摘要:
본 발명은 대형건물에 설치되어 있거나 신설할 냉난방설비의 개선을 통하여 공기 이동 속도를 적정하게 조절하여 열교환이 충분이 이루어지도록 함으로써 냉난방 설비의 성능을 획기적으로 개선할 수 있는 건물 및 비닐하우스 등 냉난방 설비의 성능 개선방법과 그 설비장치에 관한 것이다. 본 발명에 의하면 토출구에서의 공기의 배출속도(V)가 아래의 식(1)을 만족시킬 수 있도록 상기 냉난방 설비를 개선하는 단계를 포함하는 것을 특징으로 한다. 0.45 * H ≤ V ≤ 0.75 * H ----------- (1) 단, 상기 식(1)에 의해 계산된 V 값은 최대 3m/s, 최소 1.8m/s를 벗어날 경우에는 상기 최대 또는 최소의 값을 채택한다.
摘要翻译:本发明涉及一种用于提高建筑物和聚of of等空调和加热设备的性能的方法,由此通过适当地调整空气的运动速度和空气调节和加热设备的速度可以显着地提高空调和加热设备的性能, 从而通过改进安装在或将要安装在大型建筑物中的空调和加热设备来实现充分的热交换。 本发明还涉及使用该方法的设备和装置。 本发明包括改善空调和加热设备的步骤,使得排出口处的排气率(V)可以满足下式(1)。 0.45 * H = V = 0.75 * H -----------(1)当使用公式(1)计算的V值超过最大值3 m时,选择最大值或最小值 / s或至少1.8 m / s。
摘要:
A ventilation device comprises a body (11) having first and second ports (14, 15) and a ventilation passage (13) that extends through the body between the ports to allow airflow through the body. The ventilation device also comprises a noise attenuation device (21) arranged to attenuate noise transmission through the passage in at least one direction from the first to the second port. The noise attenuation device comprises at least one array (22, 23) of noise attenuation tubes disposed in the ventilation body. In one form, the noise attenuation device (21) include two arrays of attenuator tubes disposed on respective opposite sides of the passage (13). The tubes each have a mouth (27) that opens to the passage and a central axis that extends from the mouth in the direction of elongation of that tube. At least some of the tubes in the first array (20) oppose at least some of the tubes in the second array (23) with the central axes of the opposing tubes at the region of their mouths (27) being mutually inclined. In addition, at least one of the arrays include an acoustic transmissive partition (30) associated with at least some of the attenuator tubes. The partition (30) separates at least a portion of the cavities (28) of those tubes (27) from the ventilation passage (13). A framing system (40) is also disclosed to enable a bank of ventilation devices (41, 101) to be interconnected and coupled within a frame (60), particularly a glazing frame.
摘要:
A noise attenuation device comprising an array of quarter wave resonators (10), having varying mouth widths w when in use are disposed adjacent an aperture or ventilation opening (73) having a width H. The resonators (10) are tuned to a resonant frequency, increasing from one face of the attenuation device to another, such that w > H. In a second embodiment, a second array (40) tuned to a different frequency is disposed on the opposite side of the aperture (73), the aperture (73) being kinked so that there is no direct line of sight through the device.
摘要:
A passive ventilation panel and system, in particular for use in doors, ceilings, walls and partitions enables an exchange of supply and return air for at least one room or a room, without the need for additional ventilation equipment, such as ducts, and without the needs to install wall openings or grills for the supply and exhaust air in the space.
摘要:
본 발명은 유체의 흐름을 위한 배플 플레이트의 통로가 버링에 의하여 형성되어 있는 에어컨디셔너용 머플러를 개시한다. 본 발명은 하우징과 배플 플레이트로 구성되어 있다. 하우징은 팽창 체임버가 형성되어 있는 하우징 보디와, 팽창 체임버와 연통되도록 하우징 보디의 한쪽에 연장되어 있는 유입튜브와, 팽창 체임버와 연통되도록 하우징 보디의 다른 쪽에 연장되어 있는 유출튜브를 구비한다. 배플 플레이트는 제1 평면을 갖는 플레이트 형태이며, 팽창 체임버를 구획하도록 장착되어 있고, 제1 평면으로부터 버링에 의하여 유입튜브를 향하여 연장되도록 형성되어 있는 통로튜브를 구비한다. 유입튜브의 중심축선과 통로튜브의 중심축선은 서로 어긋나도록 배치되어 있다. 본 발명에 의하면, 유체의 흐름을 위한 통로튜브가 버링되어 있는 배플 플레이트에 의하여 소음 저감 효과를 향상시킬 수 있다.
摘要:
The present invention relates to a method for improving the performance of air-conditioning and heating equipment such as in buildings and polytunnels, whereby the performance of the air-conditioning and heating equipment can be dramatically improved by appropriately adjusting the rate of movement of air and hence achieving adequate heat exchange by improving the air-conditioning and heating equipment which is installed or will be newly installed in a large-scale building. The present invention also relates to equipment and devices using the method. The present invention comprises the step of improving the air-conditioning and heating equipment such that the air expulsion rate (V) at a discharge port can satisfy the following formula (1). 0.45 * H = V = 0.75 * H ----------- (1) Where the maximum or minimum values are selected when the value of V as calculated using formula (1) strays outside a maximum of 3 m/s or a minimum of 1.8 m/s.
摘要翻译:本发明涉及一种用于提高建筑物和聚of of等空调和加热设备的性能的方法,由此通过适当地调整空气的运动速度和空气调节和加热设备的速度可以显着地提高空调和加热设备的性能, 从而通过改进安装在或将要安装在大型建筑物中的空调和加热设备来实现充分的热交换。 本发明还涉及使用该方法的设备和装置。 本发明包括改善空调和加热设备的步骤,使得排出口处的排气率(V)可以满足下式(1)。 0.45 * H = V = 0.75 * H -----------(1)当使用公式(1)计算的V值超过最大值3 m时,选择最大值或最小值 / s或至少1.8 m / s。
摘要:
An acoustic duct silencer (10, 64, 68) is disclosed having opposed sidewall baffles (20, 21) which are disposed in a duct (12) such that a cavity (30) is defined between the baffles (20, 21) and the adjacent duct sidewalls (14, 15), the space between the baffles bordering a passageway (32) in the duct for the flow of a fluid medium therethrough. Each baffle (20, 21) features an array of generally parallel, spaced-apart elongate slots (38) which substantially span the vertical or horizontal breadth of the baffles. The baffles preferably have a relatively large effective thickness so that the slots (38) formed therein have a significant depth to them. In this manner, an integral array of resonators are provided having a significant slot or throat depth for the attenuation of low frequency sound.