1、Designation: F1334 18 An American National StandardStandard Test Method forDetermining A-Weighted Sound Power Level of VacuumCleaners1This standard is issued under the fixed designation F1334; the number immediately following the designation indicates the year oforiginal adoption or, in the case of
2、revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method calculates the overall A-weightedsound power level emitted by small portable up
3、right, canister,combination vacuum cleaners, backpack vacuum cleaners,hard-floor cleaning machines, extractors, and central vacuumcleaner motorized nozzles intended for operation in domesticand commercial applications.1.1.1 To determine the Sound Power Level of a centralvacuum at the power unit loca
4、tion refer to Test Method F2544.1.2 A-weighted sound pressure measurements are per-formed on a stationary vacuum cleaner, extractor, hard-floorcleaning machine, or backpack vacuum cleaner in a semi-reverberant room. This test method determines sound power bya comparison method for small noise source
5、s, that is, compari-son to a broadband reference sound source.1.3 This test method describes a procedure for determiningthe approximate A-weighted sound power level of small noisesources. This test method uses a non-special semi-reverberantroom.1.4 Results are expressed as A-weighted sound power lev
6、elin decibels (referenced to one picowatt).1.5 The values stated in inch-pound units are to be regardedas the standard. The values in parentheses are for informationonly.1.6 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility
7、of the user of this standard to establish appro-priate safety, health, and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.7 This international standard was developed in accor-dance with internationally recognized principles on standard-ization estab
8、lished in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C634 Terminology Relating to Building and EnvironmentalAcoustic
9、sE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodF608 Test Method for Evaluation of Carpet Embedded DirtRemoval Effectiveness of Household/CommercialVacuum CleanersF655 Specificat
10、ion for Test Carpets and Pads for VacuumCleaner TestingF2544 Test Method for Determining A-Weighted SoundPower Level of Central Vacuum Power UnitsF2607 Test Method for Measuring the Hard Surface Floor-Cleaning Ability of Household/Commercial VacuumCleaners2.2 ANSI Standards:3ANSI S1.10 Method for th
11、e Calibration of MicrophonesANSI S1.43 Specifications for Integrating-Averaging SoundLevel MetersANSI S12.51/ISO 3741 Acoustics - Determination of soundpower levels of noise sources using sound pressure -Precision methods for reverberation roomsANSI S12.53/ISO 3743 Acoustics - Determination of sound
12、power levels of noise sources - Engineering methods forsmall, movable sources in reverberant fieldsANSI S12.57/ISO 3747 Standard Acoustics - Determinationof sound power levels of noise sources using soundpressure - Comparison method in situ2.3 ISO Standards:4ISO 11201 Acoustics Noise emitted by mach
13、inery andequipment Determination of emission sound pressure1This test method is under the jurisdiction ofASTM Committee F11 on VacuumCleaners and is the direct responsibility of Subcommittee F11.25 on SoundMeasurement.Current edition approved Oct. 1, 2018. Published October 2018. Originallyapproved
14、in 1991. Last previous edition approved in 2014 as F1334 14. DOI:10.1520/F1334-18.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary pag
15、e onthe ASTM website.3Available from American National Standards Institute, 11 W. 42nd St., 13thFloor, New York, NY 10036.4Available from International Organization for Standardization (ISO), ISOCentral Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,Geneva, Switzerland, http:/www
16、.iso.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment
17、 of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1levels at a work station and at other specified positions inan essentially free field over a reflecting plane withnegligible environmental corrections3. Termino
18、logy3.1 Definitions:3.1.1 population, nthe total of all of the units of theparticular model or type, or both, of vacuum cleaner beingtested.3.1.2 population sample or sample, nthree or more testunits, randomly taken from the population.3.1.3 reference sound source (RSS), na standard source ofbroadba
19、nd sound with a certified set of sound power emissions.3.1.4 source, na device that emits sound. This may be thevacuum cleaner or a motorized nozzle.3.1.5 test unit or unit, na single vacuum cleaner, nozzle,or hard-floor machine of the model or type, or both, beingtested.3.1.6 Unless otherwise indic
20、ated, definitions are in accor-dance with Terminology C634.4. Significance and Use4.1 The test results enable the comparison of A-weightedsound emission from vacuum cleaners, backpack vacuumcleaners, extractors, or hard-floor cleaning machines whentested under the condition of this test method.5. Te
21、st Room Requirements5.1 The test room shall be semi-reverberant. It shall containsufficiently little sound absorption material so the requirementsof 5.2 can be met. It should be large enough to meet thedimension requirements of 5.2.5.1.1 When a central vacuum cleaner motorized nozzle is tobe tested,
22、 the test room should be plumbed for a centralvacuum system according to the manufacturers instructionsusing standard 2.00-in. diameter thin-wall PVC tubing. Asingle wall inlet shall be located in the test room.5.2 Identify a location on the test room floor which canaccommodate six equally spaced mi
23、crophone positions 60apart located at a height of 60 in. (1.5 m) above the floor on a12 ft (3.6 m) diameter circle the center of which is the centerof the sound source. These positions shall result in a standarddeviation of the six sound pressure measurements of not morethan 2.3 dB when measuring th
24、e reference sound source. Thislocation is suitable for the vacuum cleaner and reference soundsource for this test method. Refer to Figs. 1-4 for typicallayouts.5.2.1 Use the same microphone setup for both canister andbackpack vacuums. Backpack vacuums shall be mounted 32 in.(800 mm) from the floor t
25、o the bottom of the backpackvacuum. The means of mounting shall not interfere with thebackpack operation or cause vibration when mounted.5.3 EnvironmentalAmbient test conditions within the testroom shall be controlled to within 70 6 5F (21 6 3C) and 30to 70 % relative humidity.5.4 Also, any room whi
26、ch has qualified in accordance withANSI S12.51/ISO 3741, ANSI S12.53/ISO 3743, and ANSIS12.57/ISO 3747 may be used to measure the sound powerlevels of vacuum cleaners, motorized nozzles, or hard-floormachines.5.5 The measuredA-weighted sound pressure levels shall becorrected for the influence of bac
27、kground noise according toTable 1. When the steady background-noise sound pressurelevel is more than 6 dB below the sound pressure level at eachmeasurement point, the measured A-weighted sound pressurelevels shall be corrected for the influence of background noiseaccording to Table 1. If this differ
28、ence is less than 6 dB nocorrection is allowed, and any reported data must include anote indicating that the background noise requirements of thisstandard were not satisfied.6. Instrumentation and Equipment6.1 Acoustical InstrumentationThe sound measurementsystem shall be as specified in ANSI S1.43.
29、6.2 Voltage Regulator SystemThe regulator shall be ca-pable of maintaining the vacuum cleaners rated voltage(61 %) and frequency (61 Hz) having a waveform that isFIG. 1 Sound Set UpFIG. 2 Sound Test Pattern for Uprights, Extractors, and Hard-floor Cleaning MachinesF1334 182essentially sinusoidal wit
30、h 3% maximum harmonic distortionfor the duration of the test.6.3 Test Carpet and PadThe test carpet and pad shall be54 in. wide (137 cm) and 72 in. (183 cm) long. The carpet shallbe multilevel. Carpet and pad shall be as specified in Specifi-cation F655.NOTE 1For this test method two standard size 2
31、7 by 72-in. (69 by183-cm) long test carpets could be placed side by side to make it 54 by 72in. (138 by 183 cm) long. It is recommended that the two pieces of testcarpet be taped to the floor, side by side with the pile running in the samedirection.6.4 Hard Surface Floor (VCT)Any smooth (minimaltext
32、ure, no seams) vinyl floor covering as specified in TestMethod F2607. Flooring to be glued to a plywood supportingsurface over the whole area. Plywood supporting surface to bea flat surface consisting of a piece of34-in. (19-mm) thickexterior-grade plywood with the “A” surface upward to supportthe t
33、est surface. Surface shall be 54 in. wide (137 cm) and 72in. (183 cm) long. If the test area has a smooth hard floorsurface this area may also be used. Concrete and similar hardsurfaces may also be used, provided no vibration through theflooring material can occur.6.5 Reference Sound SourceThe refer
34、ence sound sourceshall meet the requirements of ANSI S12.57/ISO 3747.6.6 Instrumentation:6.6.1 Thermometer, accurate to within 63F (62C).6.6.2 A means of measuring relative humidity, accurate towithin 62 % over the range used.7. Operation of Vacuum Cleaner, Extractor, or Hard-Floor Machine7.1 Run-In
35、Operate new test cleaners continuously for atleast 1 h prior to testing. Canister cleaners and backpackvacuum cleaners shall be run open with no hose attached.Upright and power nozzles shall be run so that the rotatingbrush does not engage the carpet or the floor.7.2 Warm-UpOperate the cleaners for
36、10 min just prior tomaking sound pressure level measurements in the same con-figuration as described in 7.1.7.3 Test Configuration:7.3.1 The vacuum cleaner shall be configured for the carpetcleaning or hard-floor cleaning mode.7.3.2 The dust bag or primary filter shall be new, ifapplicable.7.3.3 All
37、 belts, if equipped, shall be new at the start of therun-in.7.3.4 Rotating agitator type cleaner including power nozzleshall use the same setting as specified in Test Method F608 forcleaning multilevel carpet or in Test Method F2607 for hardfloor cleaning, which is as follows:7.3.4.1 If various sett
38、ings are provided, set the motor speedsetting, suction regulator, or nozzle height, or combinationthereof, using the manufacturers specified setting for cleaningmultilevel carpet or hard-floor surfaces. Momentary or instan-taneous speeds are not to be used.7.3.5 For straight air canister cleaners an
39、d backpackvacuum cleaners, use the same setting specified in Test MethodFIG. 3 Sound Test Pattern for Canisters and Backpack VacuumCleanersFIG. 4 Sound Test Pattern for CV AccessoriesTABLE 1 Corrections for Background Noise LevelsDifference Between Sound PressureLevel Measured with Sound Source Oper
40、atingand Background NoiseLevel Alone, dBCorrection to be Subtractedfrom Sound Pressure LevelMeasured with Sound SourceOperating to Obtain SoundPressure Level Due to SoundSource Alone, dBLess than 6 No correction allowed61718190.510 0.5Greater than 10 0F1334 183F608 for cleaning multilevel carpet or
41、in Test Method F2607for hard floor cleaning, which is as follows:7.3.5.1 If various settings are provided, set the motorsetting, suction regulator, or nozzle height, or combinationthereof, using the manufacturers specific setting for cleaningmultilevel carpet or hard-floor surfaces. If no specific i
42、nstruc-tions are given, or if judged to be inadequate or unclear,position the nozzle on the carpet so the maximum suction isprovided, taking care to maintain the tilt angle throughout thetest. Momentary or instantaneous speeds are not to be used.7.3.6 VoltageTests are to be conducted at the nameplat
43、evoltage (61 %) and frequency (61 Hz) throughout the test.For cleaners with dual nameplate voltage ratings, conductsound tests at the highest voltage.7.3.7 Central Vacuum Power UnitThe central vacuumpower unit shall be remotely located (outside the semi-reverberate room) so that the noise levels gen
44、erated by thepower unit do not affect the test results of the central vacuum(motorized or straight air) nozzle being tested.8. Location of Sound Sources and Equipment8.1 Carpet and PadLay the carpet and pad or the VCTflooring, or other hard surface, on the floor with the geometriccenter of the carpe
45、t directly over the center of the circle definedin 5.2.8.2 Locate the vacuum cleaner or the reference soundsource at the position determined in 5.2.All modules (generallythe motor/blower and its housing in the base of an upright unit,or in the canister of a canister unit) shall be adequately secured
46、in a manner which will not affect the sound pressure readings.8.2.1 Reference Sound Source LocationPosition the centerof the radiating portion (fan blades, for an aerodynamic source)over the location defined above. The reference sound source isplaced directly on the carpet or hard surface.8.2.1.1 Wh
47、en testing a backpack vacuum cleaner, the RSSshall be set at the height of the bottom of the backpackequipment.8.2.2 Vacuum Cleaner Location:8.2.2.1 Center the principal module over the source locationas determined in 5.2.8.2.2.2 Take care to ensure the rotating brush model doesnot damage the carpet
48、 seam (that is, center upright on carpet oncenter of carpet with the rotating brush perpendicular to seam).8.2.2.3 Second ModuleIf there is a second module notintegral with the basic unit (for example, the power nozzle), itshall be positioned on the side of the principle module awayfrom the center o
49、f the room. Position the second module insuch a way that, to the maximum extent possible, its soundemissions are not shielded by the principal module, and viceversa. For example, a position shall be such that air exhaustnoise will radiate into the room in a direction other than towardthe second module.8.2.3 HandleAny operating handle shall be separatelysupported in a position such that the handle grip is 3112 in. (80cm) above the carpet surface or hard surface. Take care that thesupport structure does not introduce additional rattles, etc.There
