Department of Otolaryngology - Head and Neck Surgery, Virginia Commonwealth University School of Medicine, Richmond, VA, USA.
Department of Otolaryngology - Head and Neck Surgery, Virginia Commonwealth University School of Medicine, Richmond, VA, USA.
Am J Otolaryngol. 2020 Jul-Aug;41(4):102507. doi: 10.1016/j.amjoto.2020.102507. Epub 2020 Apr 23.
The aim of this study was to determine if high-powered air hand dryers produce sufficient noise to warrant concern over acoustic trauma as determined by federally established standards.
Prospective observational field data collection SETTING: Urban and suburban community SUBJECTS AND METHODS: Using a NIOSH developed and calibrated soundmeter app, powered hand dryers were measured throughout two metropolitan areas. Ear level measurements were performed while drying wet hands. Recorded variables included average LAeq, Time-Weighted Average, Max and Peak Levels, Noise Dose, and Projected Dose according to NIOSH and OSHA standards, and all three major weighting networks (A, C, and Z).
Fifty-four trials were performed at 27 locations. Average dryer run time was 28.9 s (range 14-45 s). Average LAeq (dBA), average maximum level (dBA), and average TWA (dBA) were 90.46 ± 5.32, 94.86 ± 5.73, 59.90 ± 6.80, respectively. The noise generated exceeded published manufacturer specifications. However, even with estimated cumulative daily exposure, the noise generated by these dryers did not exceed federal safety standards.
Air-powered hand dryers produce noise output at a level that many would find subjectively uncomfortable with some brands/models consistently producing noise in excess of 90 dBA. Nonetheless, these dryers do not produce sound exceeding NIOSH standards for noise exposure.
本研究旨在确定强力空气干手器是否会产生足够的噪音，从而根据联邦制定的标准引起对声创伤的关注。
前瞻性观测现场数据收集
城市和郊区社区
使用 NIOSH 开发和校准的声级计应用程序，在两个大都市区测量电动干手器。在擦干湿手时进行耳级测量。记录的变量包括平均 LAeq、时间加权平均值、最大和峰值水平、噪声剂量和根据 NIOSH 和 OSHA 标准以及所有三个主要加权网络（A、C 和 Z）预测的剂量，以及平均 LAeq（dBA）、平均最大水平（dBA）和平均 TWA（dBA）分别为 90.46±5.32、94.86±5.73 和 59.90±6.80。产生的噪声超过了公布的制造商规格。然而，即使考虑到估计的每日累积暴露量，这些干燥器产生的噪声也没有超过联邦安全标准。
空气动力干手器产生的噪声输出水平，许多人会觉得主观上不舒服，有些品牌/型号的噪声持续超过 90 dBA。尽管如此，这些干燥器产生的声音并没有超过 NIOSH 噪声暴露标准。
