GB/T 15765-2021 PDF in English
GB/T 15765-2021 (GB/T15765-2021, GBT 15765-2021, GBT15765-2021)
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| GB/T 15765-2021 | English | 380 |
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Hermetic motor-compressors for room air conditioners
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| GB/T 15765-2014 | English | RFQ |
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Hermetic motor-compressors for room air conditioners
| Obsolete |
| GB/T 15765-2006 | English | 679 |
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Hermetic motor-compressors for room air conditioners
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| GB/T 15765-1995 | English | 719 |
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Standards related to (historical): GB/T 15765-2021
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GB/T 15765-2021: PDF in English (GBT 15765-2021) GB/T 15765-2021
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 97.040.30
CCS Y 61
Replacing GB/T 15765-2014
Hermetic motor-compressors for room air
conditioners
ISSUED ON: MAY 21, 2021
IMPLEMENTED ON: DECEMBER 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Product classification ... 7
5 Requirements ... 7
6 Test method ... 13
7 Inspection rules ... 22
8 Marking, packaging, transportation, storage ... 27
Appendix A (Informative) Test method for annual performance factor of speed-
controllable compressor ... 29
Appendix B (Informative) Special technical requirements for variable capacity
compressors ... 30
References ... 34
Hermetic motor-compressors for room air
conditioners
1 Scope
This document specifies the terms and definitions, product classification,
technical requirements, test methods, inspection rules, marking, packaging,
transportation, storage requirements for hermetic motor-compressors for room
air conditioners.
This document applies to hermetic motor-compressors for room air conditioners,
which use the refrigerants R22, R410A, R32, R290 (hereinafter referred to as
compressors, including rotor compressors and scroll compressors).
The similar compressor, which use other types of refrigerants, can make
reference to this standard.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) is applicable to this standard.
GB/T 1019 General requirements for the package of household and similar
electrical appliances
GB/T 4214.1-2017 Test method for noise of household and similar electrical
appliances - General requirements
GB/T 5773 The method of performance test for positive displacement
refrigerant compressors
GB/T 7725 Room air conditioners
GB/T 9237 Refrigerating systems and heat pumps - Safety and
environmental requirements
IEC 60335-2-34:2016 Household and similar electrical appliances - Safety -
Part 2-34: Particular requirements for motor compressors
Variable capacity compressor
A compressor, whose working capacity is changed by mechanical and (or)
electrical means.
3.7
Annual performance factor of compressor
When the compressor is tested according to the prescribed test method, the
performance index, that reflects the compressor's annual operating energy
efficiency, which is obtained by referring to the calculation method of the
annual performance factor of the air conditioner.
Note: Refer to Appendix A for the test method of the annual performance factor of
the speed controllable compressor.
4 Product classification
4.1 According to structure type, it can be divided into:
a) Rotor compressor;
b) Scroll compressor.
4.2 According to the type of power supply, it can be divided into:
a) Single-phase power compressor;
b) Three-phase power compressor.
4.3 According to the type of speed control, it can be divided into:
a) Fixed speed compressor;
b) Speed controllable compressor.
4.4 According to the change of cylinder capacity, it can be divided into:
a) Fixed capacity compressor;
b) Variable capacity compressor.
5 Requirements
5.1 Product technical specifications
value of the compressor, when it is running under the test conditions.
6.5 Noise measurement
This document adopts GB/T 4214.1-2017, as the method for determining the
noise level of the compressor's A-weighted sound power level.
The fixed-speed compressor is tested at the rated frequency. The speed
controllable rotor compressor is tested at 60 Hz. The speed controllable scroll
compressor is tested at 60 Hz (or 90 Hz). The variable capacity compressor is
tested at full capacity AND 60 Hz.
The compressor under test is placed in an occasion, that meets the
requirements of the test environment in 4.4.1 of GB/T 4214.1-2017. The test
environment is a semi-anechoic chamber. The compressor shall be equipped
with its own damping pad. Place it on a rigid platform (with fixing bolts), in the
center of the semi-anechoic chamber. The mass of the rigid platform shall be
more than 10 times the mass of the compressor under test. The compressor is
connected to the alternative cooling system, which is outside the semi-anechoic
chamber, by a non-rigid connecting pipe. Alternative outdoor refrigeration
system. The recommended alternative refrigeration system is as shown in
Figure 2.
The compressor is vacuumed AND filled with a suitable refrigerant. Run the
compressor. Adjust the condensing temperature (dew point temperature), to
stabilize it at 54.4 °C ± 0.3 °C. Adjust the evaporation temperature (dew point
temperature), to stabilize it at 7.2 °C ± 0.2 °C. Adjust the thermostatic control
water valve, to make the return air temperature reach to the suction temperature,
which is same as that in the refrigeration capacity test. The system enters a
steady state for 30 min.
After the system is stable, it may start to measure the A-weighted sound
pressure level AND noise value, at each point, according to the provisions of
GB/T 4214.1-2017. Then calculate the average A-weighted sound pressure
level's noise value of the measured surface. Calculate the compressor's A-
weighted sound power level's noise value.
Appendix B
(Informative)
Special technical requirements for variable capacity compressors
B.1 Requirements
B.1.1 Product technical specifications
Except for the following content, the clause 5.1 is applicable.
For the variable capacity compressors, it should indicate the cylinder's working
volume, refrigerant, cooling capacity, input power, working current, coefficient
of performance and other values, during full capacity operation; meanwhile it
shall indicate such parameters as the starting method of the compressor, the
cylinder's working volume, cooling capacity, coefficient of performance of
variable capacity operation mode, for user's reference.
For the variable-capacity compressors, it should indicate the range of pressure
conditions for full-capacity operation and variable-capacity operation. If it is a
speed-controllable compressor at the same time, it includes the frequency
range of full-capacity operation and variable-capacity operation.
When the variable-capacity compressor changes the working volume, it should
clarify the pressure, frequency and other conditions, during the switching. The
user shall install the corresponding switching control device, in accordance with
the requirements specified by the compressor manufacturer.
B.1.2 Ambient temperature to which the compressor is suitable for the air
conditioner
The content of 5.2 applies.
B.1.3 Requirements for use performance
B.1.3.1 Cooling capacity and coefficient of performance
Carry out the test, according to the method specified in B.2.2. The measured
cooling capacity is not less than 95% of its nominal value. The measured
coefficient of performance of the compressor is not less than the corresponding
limit, which is specified in 5.3.1 for the speed controllable compressor.
B.1.3.2 Starting performance
When the variable capacity compressor is started, it shall be carried out in the
The content of 6.1 applies. Meanwhile, the variable capacity compressor should
be equipped with a switching control device to change the working volume. The
compressor volume shall be changed, according to the test conditions and the
needs of the test items.
B.2.2 Test of refrigeration capacity and coefficient of performance
Test according to GB/T 5773. The test conditions meet the requirements of
Table 10. The suction temperature is consistent with the nominal test
temperature of the product. The fixed speed compressor is tested at the rated
frequency. The speed controllable compressor is tested at the rated frequency
(or speed). Measure the compressor, respectively at 100% rated cooling
capacity and another partial load rate (which is consistent with the nominal
partial load rate of the compressor manufacturer). Take the cooling capacity,
under 100% load rated conditions, as the actual measured cooling capacity of
the compressor. Take the average value of the coefficient of performance, under
two loads, as the measured coefficient of performance of the compressor.
B.2.3 Starting performance test
The content of 6.3 applies.
B.2.4 Measurement of input power and working current
The content of 6.4 applies.
B.2.5 Noise measurement
The content of 6.5 applies.
B.2.6 Vibration measurement
The content of 6.6 applies.
B.2.7 Test of airtightness of enclosure
The content of 6.7 applies.
B.2.8 Determination of residual moisture of whole machine
The content of 6.8 applies.
B.2.9 Detection of internal impurity content of whole machine
The content of 6.9 applies.
B.2.10 Accelerated life test
The content of 6.10 applies.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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