1、Designation: F558 11An American National StandardStandard Test Method forMeasuring Air Performance Characteristics of VacuumCleaners1This standard is issued under the fixed designation F558; the number immediately following the designation indicates the year of originaladoption or, in the case of re
2、vision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscriptepsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers procedures for determining airperformance characteristics of commercial an
3、d householdupright, canister, stick, hand-held, utility, and combination-type vacuum cleaners having provisions for attaching a hoseand incorporating a series universal motor. This test methodcan be applied to the carpet cleaning mode of operation.1.2 These tests and calculations include determinati
4、on ofsuction, airflow, air power, maximum air power, and inputpower under standard operating conditions (see Note 1). Thenozzle mounted on plenum testing is an ideal air performancemeasurement and is not intended to represent the actual airperformance during carpet or floor cleaning.NOTE 1For more i
5、nformation on air performance characteristics, seeRefs (1-6).21.3 The foot-pound-inch system of units is used in thisstandard. The values in parentheses are given for informationonly.1.4 This standard may involve hazardous materials, opera-tions, and equipment. This standard does not purport toaddre
6、ss all of the safety concerns, if any, associated with itsuse. It is the responsibility of the user of this standard toestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use. Aspecific precautionary statement is given in Note 2.2. Re
7、ferenced Documents2.1 ASTM Standards:3E1 Specification for ASTM Liquid-in-Glass ThermometersE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE2251 Specification for Liquid-in-Glass
8、 ASTM Thermom-eters with Low-Hazard Precision LiquidsF431 Specification for Air Performance Measurement Ple-num Chamber for Vacuum Cleaners2.2 AMCA Standard:4210-85 Laboratory Methods of Testing Fans for Rating2.3 IEC Standard:5IEC 60312 Ed 3.2 Vacuum Cleaners for Household UseMethods of Measuring t
9、he Performance3. Terminology3.1 Definitions:3.1.1 air power, AP, W, nin a vacuum cleaner, the nettime rate of work performed by an air stream while expendingenergy to produce an airflow by a vacuum cleaner underspecified air resistance conditions.3.1.2 automatic bleed valve, nany device a part of av
10、acuum cleaners design which automatically introduces anintentional leak within the vacuum cleaners system whenmanufacturer specified conditions are met.3.1.3 corrected airflow, Q, cfm, nin a vacuum cleaner, thevolume of air movement per unit of time under standardatmospheric conditions.3.1.4 input p
11、ower, W, nthe rate at which electrical energyis absorbed by a vacuum cleaner.3.1.5 model, nthe designation of a group of vacuumcleaners having the same mechanical and electrical construc-tion with only cosmetic or nonfunctional differences.3.1.6 population, nthe total of all units of a particularmod
12、el vacuum cleaner being tested.3.1.7 repeatability limit (r), nthe value below which theabsolute difference between two individual test results obtainedunder repeatability condition may be expected to occur with aprobability of approximately 0.95 (95 %).3.1.8 repeatability standard deviation (Sr), n
13、the standarddeviation of test results obtained under repeatability condi-tions.1This test method is under the jurisdiction of ASTM Committee F11 on VacuumCleaners and is the direct responsibility of Subcommittee F11.22 on Air Perfor-mance.Current edition approved Nov. 1, 2011. Published December 201
14、1. Originallyapproved in 1978. Last previous edition approved in 2006 as F558 06. DOI:10.1520/F0558-11.2The boldface numbers in parentheses refer to the list of references appended tothis test method.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Servic
15、e at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.4Available fromAir Movement and ControlAssociation, 30 West University Dr.,Arlington Heights, IL, 60004.5Available from the IEC Web store, webstore.iec.ch, or Am
16、erican NationalStandards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.1.9 reproducibility limit (R), nthe value below whichthe absolute difference between two test
17、results obtained underreproducibility conditions may be expected to occur with aprobability of approximately 0.95 (95 %).3.1.10 reproducibility standard deviation (SR), nthe stan-dard deviation of test results obtained under reproducibilityconditions.3.1.11 sample, na group of vacuum cleaners taken
18、from alarge collection of vacuum cleaners of one particular modelwhich serves to provide information that may be used as a basisfor making a decision concerning the larger collection.3.1.12 standard air density, rstd, lb/ft3, natmospheric airdensity of 0.075 lb/ft3(1.2014 Kg/m3).3.1.12.1 DiscussionT
19、his value of air density correspondsto atmospheric air at a temperature of 68F (20C), 14.696 psi(101.325 kPa), and approximately 30 % relative humidity.3.1.13 suction, inch of water, nin a vacuum cleaner, theabsolute difference between ambient and subatmospheric pres-sure.3.1.14 test run, nthe defin
20、itive procedure that producesthe singular result of calculated maximum air power.3.1.15 test station pressure, Bt, inch of mercury, nfor avacuum cleaner, the absolute barometric pressure at the testlocation (elevation) and test time.3.1.15.1 DiscussionIt is not the equivalent mean sea levelvalue of
21、barometric pressure typically reported by the airportand weather bureaus. It is sometimes referred to as theuncorrected barometric pressure (that is, not corrected to themean sea level equivalent value). Refer to 5.5 for additionalinformation.3.1.16 unit, na single vacuum cleaner of the model beingt
22、ested.4. Significance and Use4.1 The test results allow the comparison of the maximumpotential air power available for cleaning tasks when testedunder the conditions of this test method. The test results do notindicate the actual air power present during the cleaningprocess due to the effects of the
23、 various tools in use andsurfaces being cleaned. During the nozzle on plenum chamberair performance testing, the brushroll is unloaded and thiscondition is not representative of the brushroll being in contactwith carpet or other surfaces being cleaned.5. Apparatus5.1 Plenum ChamberSee Specification
24、F431 orIEC 60312, Section 5.2.8.2 (Figure 13c).5.2 Water Manometers, or equivalent instruments. One tomeasure from 0 to 6 in. (152.4 mm) in increments of 0.01 in.(0.254 mm), and one with increments of 0.1 in. (2.54 mm) foruse in making measurements above 6 in. (152.4 mm). A singleinstrument having a
25、 resolution of 0.01 in. (0.254 mm) over theentire required range may be used instead of two separateinstruments.5.3 Wattmeter, to provide measurements accurate to within61%.5.4 Voltmeter, to provide measurements accurate to within61%.5.5 Barometer, with an accuracy of 60.05 in. of mercury(1.27 mm of
26、 mercury), capable of measuring and displayingabsolute barometric pressure, scale divisions 0.02 in. (0.51mm) or finer.5.5.1 Mercury barometers, in general, measure and displaythe absolute barometric pressure. Some corrections may beneeded for temperature and gravity. Consult the ownersmanual.5.5.2
27、When purchasing an aneroid or electronic barometer,be sure to purchase one which displays the absolute barometricpressure, not the mean sea level equivalent barometric pressurevalue. These types of barometers generally have temperaturecompensation built into them and do not need to be correctedfor g
28、ravity.5.6 Sharp-Edge Orifice PlatesSee specifications in Speci-fication F431.5.7 Thermometer Solid-stem, ambient thermometer hav-ing a range from 18 to 89F (or 8 to +32 C) with graduationsin 0.2 F (0.1C), conforming to the requirements for thermom-eter 63F (17.2C) as prescribed in Specification E1.
29、Asanalternative, thermometers S63F or S63C, as prescribed inSpecification E2251, may be used. In addition, thermometricdevices such as resistance temperature detectors (RTDs),thermistors or thermocouples of equal or better accuracy maybe used.5.8 PsychrometerThermometers graduated in 0.2 F (0.1C).5.
30、9 Voltage-Regulator System, to control the input voltageto the vacuum cleaner. The regulator system shall be capable ofmaintaining the vacuum cleaners rated voltage 61 % andrated frequency having a wave form that is essentially sinusoi-dal with 3 % maximum harmonic distortion for the duration ofthe
31、test.6. Sampling6.1 A minimum of three units of the same model vacuumcleaner, selected at random in accordance with good statisticalpractice, shall constitute the population sample.6.1.1 To determine the best estimate of maximum air powerfor the population of the vacuum cleaner model being tested,th
32、e arithmetic mean of the maximum air power of the samplefrom the population shall be established by testing it to a 90 %confidence level within 65%.6.1.2 Annex A2 provides a procedural example for deter-mining the 90 % confidence level and when the sample sizeshall be increased (see Note 2).NOTE 2Se
33、e Annex Annex A2 for method of determining 90 %confidence level.7. Test Vacuum Cleaners7.1 New Test Vacuum Cleaners:FIG. 1 Schematic Diagram of Meter ConnectionsF558 1127.1.1 Preconditioning a New Test Vacuum CleanerRunthe vacuum cleaner in at rated voltage 61 % and ratedfrequency with filters in pl
34、ace.7.1.1.1 Preconditioning a Rotating Agitator Type VacuumCleanerIn a stationary position, operate the vacuum cleanerfor 1 h with the agitator bristles not engaged on any surface.7.1.1.2 Preconditioning a Straight-Air Canister VacuumCleanerOperate the vacuum cleaner for 1 h with a wide-open inlet (
35、without hose).7.2 Used Test Vacuum Cleaners:7.2.1 Recondition a used test vacuum cleaner; prior to theinitial test run as follows:7.2.1.1 Thoroughly remove excess dirt from the vacuumcleaner. Without using tools for disassembly, clean the entireouter surface, brushes, nozzle chamber, ductwork, insid
36、e of thechamber surrounding the primary filter, and inside hose andwands.7.2.1.2 For vacuum cleaners using disposable filters as theprimary filters, use a new disposable primary filter from themanufacturer for each test. Install it as recommended by thevacuum cleaner manufacturer.7.2.1.3 For vacuum
37、cleaners using water as the primaryfilter, empty the receptacle and refill as recommended by themanufacturer.7.2.1.4 For vacuum cleaners using non-disposable dirt re-ceptacles, empty in accordance with the manufacturers in-structions and clean the receptacle until its weight is within0.07 oz (2 g) o
38、f its original weight and install it as recom-mended by the vacuum cleaner manufacturer.NOTE 3It is preferable to conduct this test method on new testvacuum cleaners prior to any other ASTM test methods to avoidcontamination that could cause performance variations.7.3 Test Vacuum Cleaner Settings If
39、 various settings areprovided, set the motor speed setting or suction regulator usingthe manufacturers specifications as provided in the instructionmanual for normal operation. If a different setting is used,make a note of the deviation in the test report.8. Procedure8.1 Preparation for Test:8.1.1 P
40、repare the test vacuum cleaner(s) in accordance withSection 7.8.1.2 Set the manometers to zero and check all instrumentsfor proper operation.8.1.3 Record the test station pressure and the dry-bulb andwet-bulb temperature readings within 6 ft of the test area. Readthe barometric pressure to the neare
41、st 0.02 in. of mercury (0.51mm of mercury), and the dry-bulb and wet-bulb temperaturesto the nearest 0.2 F (or 0.1 C)8.1.3.1 The test area shall be free of major fluctuatingtemperature conditions due to air conditioners or air drafts thatwould be indicated by a thermometer at the immediate testarea.
42、8.1.4 Connect a manometer or equivalent instrument to theplenum chamber.8.1.5 Connect a wattmeter and a voltmeter in accordancewith Fig. 1.8.1.5.1 Wattmeter CorrectionIf needed, the indicationmay be corrected for voltmeter and wattmeter potential coilloss by opening the load circuit on the load side
43、 of thewattmeter with the line voltage at the operating value. Thewattmeter current connection may be at its most sensitiveposition. Subtract this loss value from the total load indicationto obtain the true load. As an alternative method, use thefollowing equation:Wc5 Wi V2/RT(1)where:Wc= corrected
44、wattage,Wi= indicated wattage,V = voltmeter reading, andRT= RP3 RV/(RP+RV),where:RT= total resistance, V,RP= wattmeter potential coil resistance, V, andRV= voltmeter coil resistance, V.8.2 SetupAttachment Hose:8.2.1 Connect the hose assembly to the plenum chamberhose adapter and seal only this conne
45、ction. See Fig. 2.8.2.1.1 The end of the hose assembly should be insertedinside the hose connector adapter and be perpendicular to theplenum chamber.8.2.1.2 The end of the hose assembly shall not project intothe plenum chamber.8.2.2 The hose should be supported and kept straight andhorizontal. Maint
46、ain the vacuum cleaner in its normal operat-ing orientation. If the hose is not intended to enter the vacuumcleaner horizontally, gradually bend the hose with a singleFIG. 2 Diagram of Hose and Adapter ConnectionF558 113bend from the intake port to the plenum chamber. Anyrestraining method should al
47、low the hose coupling to seal at thecleaner. See Fig. 3.8.3 Test SetupCarpet Cleaning Mode:8.3.1 Mount the cleaner plate as shown in Fig. 1e ofSpecification F431 to the plenum chamber.8.3.2 Make an adapter by any convenient method whichadapts the test vacuum cleaners nozzle opening to the openingin
48、the cleaner plate.8.3.3 Maintain the largest cross-sectional area possiblethroughout the adapter. This will prevent impeding the airflowbetween the plenum chamber and the test vacuum cleanersnozzle.8.3.4 It is recommended that the hole for the adapter/plenum chamber interface be located as close, if
49、 not directlybelow, the dirt pickup duct for the test vacuum cleanersnozzle.8.3.5 The interface between the adapter and the test vacuumcleaners nozzle is to be airtight. This may be achieved by anconvenient means.8.3.6 If the vacuum cleaner incorporates edge cleaning slotsalong the side edge(s), or slots along the front and rear edge ofthe bottom plate, or both, these slots should be sealed by anyconvenient means such as clay, tape, and so forth.8.3.7 Do not eliminate leaks resulting from test vacuumcleaners construction, ex
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