Vacuum cleaner air performance testing equipment - Performance testing method for household and similar dry vacuum cleaners

IEC 60335-1 Safety of household and similar electrical appliances - Part l: General requirements (Household and similar electrical)

appliances-Safety-Part 1:General requirements)

IEC60335-2-2 Safety of household and similar electrical appliances - Part 2-2: Special requirements for vacuum cleaners and water absorbing cleaning appliances

要求 (Household and similar electrical appliances-Safety-Part 2-2:Particular requirements for vacu

um cleaners and water-suction cleaning appliances)

IEC 60688 Electrical measurement transmitters for converting AC and DC electrical quantities into analog or digital signals

measuring transducers for converting A.C.and D.C.electrical quantities to analogue or digital signals)

IEC 60704-1

Methods for testing noise from household and similar electrical appliances - Part 1; General Requirements (Household and Similar)

electrical appliances-Test code for the determination of airborne acoustical noise-Part 1:General re-

quirements)

IEC 60704-2-1 Methods of testing noise from household and similar electrical appliances - Part 2-1: Special requirements for vacuum cleaners

(Household and similar electrical appliances-Test code for the determination of airborne acoustical

noise-Part 2-1:Particular requirements for vacuum cleaners)

IEC 60704-3 Methods of testing noise from household and similar electrical appliances - Part 3: Procedure for determining and verifying explicit values of noise

(Household and similar electrical appliances-Test code for the determination of airborne acoustical

noise-Part 3:Procedure for determining and verifying declared noise emission values)

ISO 679 Cement Test Methods Determination of Strength

ISO 1763 Method for determining the number of clusters and/or loops per unit length and unit area of textile flooring (Textile floor cov)-

erings-Determination of number of tufts and/or loops per unit length and per unit area)

ISO 1765 Determination of Machine made Textile Floor Coverage

The air flow rate is determined by a throttle valve and a test tube with a suitable suction nozzle or a perforated disc that meets the requirements of ISO5167-1 (see Figure 22).

Note 1: Use an airflow valve at the entrance to achieve non throttling operation in the middle as described in 5.8.5. In the fully open state, the airflow resistance is less than or equal to size 8 aperture (see

7.3.7.3) Data

The airflow is controlled by fixed pre selected positions of at least 10 throttle valves. The airflow resistance at these positions is close to the airflow of different apertures of optional equipment B in 7.3.7.3

Resistance.

In a standard atmospheric environment, the air flow rate q is calculated according to formula (33):

q=K(h)/hd (33)

In the formula:

Q Air flow rate, in liters per second (L/s);

The pressure difference of the standard suction nozzle or orifice plate of the ha test tube, in kilopascals (kPa);

K (h) The flow coefficient of the suction nozzle or orifice disk is based on the verification data of the test sample.

Note 2: An independent cooling auxiliary device as described in 5.8.5 can be installed on the pressure equalization box. For example, at the entrance of the airflow valve, the airflow resistance in the open position is less than or equal to

The initial minimum airflow resistance of optional device A.

The size of optional device A is not limited to the 460mmX460mm X250mm given in Figure 23. Allow the selection of the supply given in Figure 24

When selecting device B with dimensions of 500 mm x 500mm x 500 mm and a maximum airflow greater than 40L/s, it is recommended to use this device.

The test tube can be replaced by any tube containing an air flow meter, such as an air flow meter, and the given test results comply with ISO5167-1.

7.3.7.3 Optional Equipment B

The internal dimensions of the pressure equalization box (see Figure 24) should be 500mm x 500mm, and replaceable orifice plates should be provided as clamping devices

Ensure air flow rate. The connection air outlet of the vacuum gauge should be located near the corner and within 15mm of the adjacent wall.

When the maximum airflow is less than 40L/s, it is allowed to use the smaller A-class pressure equalization box determined in the optional equipment A.

Note: Install an independent cooling auxiliary device as described in 5.8.5 on the pressure equalization box. For example, at the entrance of the airflow valve, the airflow resistance in the open position is less than or equal to the size

The initial minimum airflow resistance for 9 apertures (see Table 5).

By adopting a valve controlled airflow opening, the intermediate non throttling operation as described in 5.8.5 has been achieved. In the fully open state, the airflow resistance is less than or equal to

Size 9 aperture (see Table 5) data.