JB/T 6723.3-1999 This standard is part of the JB/T 6723 "Internal Combustion Engine Cooling Fan" series of standards. This series of standards includes the following four parts: JB/T 6723.1-1993 Internal combustion engine cooling fan Part 1: Metal cooling fan technical conditions JB/T 6723.2-1993 Internal combustion engine cooling fan Part 2: Plastic cooling fan technical conditions JB/T 6723.3- 1999 Internal combustion engine cooling fan Part 3: Technical conditions for condensing internal combustion engine cooling fan JB/T 6723.4-1999 Internal combustion engine cooling fan Part 4: Condensing internal combustion engine cooling fan test method This standard specifies the classification and naming of condensing internal combustion engine cooling fan, technology Requirements, inspection rules, marking, packaging and storage. This standard applies to both cooling fans for condensing internal combustion engines with and without generators. This standard is published for the first time. JB/T 6723.3-1999 Internal combustion engine cooling fan Part 3: Technical conditions for condensing internal combustion engine cooling fan JB/T6723.3-1999 Standard download decompression password: www.bzxz.net

ICS27.020
J96
JB
Machinery Industry Standard of the People's Republic of China
JB/T6723.3~6723.4-1999
Cooling fan forinternal combustion engines
Cooling fan forinternal combustion engines1999-09-17Published
State Machinery Industry Bureau
Published
2000-01-01Implementation
JB/T 6723.3-1999
Foreword
This standard is part of the JB/T6723 "Internal Combustion Engine Cooling Fan" series of standards, which includes the following four parts: JB/T6723.1-1993 Internal Combustion Engine Cooling Fan JB/T6723.2-1993 Internal Combustion Engine Cooling Fan JB/T6723.3-1999 Internal Combustion Engine Cooling Fan Part 1: Technical conditions for metal cooling fans Part 2: Technical conditions for plastic cooling fans Part 3: Technical conditions for condensing internal combustion engine cooling fans Part 4: Test method for condensing internal combustion engine cooling fans JB/T6723.4-1999
Internal Combustion Engine Cooling Fan!
This standard is proposed and managed by the National Technical Committee for Standardization of Internal Combustion Engines. The drafting units of this standard are: Shanghai Internal Combustion Engine Research Institute and Changzhou Diesel Engine Factory Governor Branch. The main drafters of this standard are: Jin Ruikang, Xu Yanping, Zhou Feng, Jia Zhensheng, Jiang Nanqin, Liu Xinglong. Machinery Industry Standard of the People's Republic of China
Cooling fan for internal combustion engines
Technical conditions
Part 3: Cooling fan for condensing internal combustion engines Part 3: Specifications for cooling fan of condensing engines Scope
JB/T6723.3-1999
This standard specifies the classification, naming, technical requirements, inspection rules, marking, packaging and storage of cooling fans for condensing internal combustion engines. This standard applies to cooling fans with and without generators for condensing internal combustion engines (hereinafter referred to as fans). 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 699—1988
GB/T 700—1988
GB/T 1173—1995
GB/T2828—1987
GB/T4942.1—1985
GB/T5212—1985
GB/T9439—1988
GB/T 15115—1994
JB/T6723.4—1999
3 Classification and nomenclaturewww.bzxz.net
Technical conditions for high-quality carbon structural steel
Carbon structural steel
Casting aluminium alloy
Counting sampling procedure and sampling table for batch inspection (applicable to inspection of continuous batches) Motor housing protection classification
Hot-rolled silicon steel sheet for electrical use
Grey cast iron parts
Die-cast aluminium alloy
Internal combustion engine cooling fans Part 4: Test methods for cooling fans of condensing internal combustion engines 3.1 According to the product structure and function, it is divided into two categories: fan generator and cooling fan (without generator). 3.2 Products are named as follows:
口
0010
口
Product standard code: JB/T6723.31999Variant code: Indicated by A, B, C (basic type is not marked)Rated output power of generator, W (in 2~3 digits)Basic outer diameter of impeller, cm (in two digits)Product type: FF for fan generator, F for cooling fanApproved by the State Bureau of Machinery Industry on 1999-09-172
Implementation on 2000-01-01
3.3 Marking example| |tt||JB/T6723.3—1999
a) The basic fan generator with an impeller basic outer diameter of 180mm and a rated output power of 40W is marked as: FF18—40JB/T6723.3-1999
b) The cooling fan with an impeller basic outer diameter of 140mm and a variant code of B is marked as: F14BJB/T6723.3—1999
4 Technical requirements
4.1 Fan products shall comply with the requirements of this standard and be manufactured in accordance with product drawings and technical documents approved through prescribed procedures. 4.2 The fan product series shall comply with the provisions of Table 1. 1 Product series and basic performance
Table 1
Basic outer diameter D of impeller,
mm
Rated speed n
r/min
Rated air volume Q
m'/h
Rated
speed
, rated
rated wind
Maximum
power generation
rated
power
rate
power
w
static pressure P.
Pa
static pressure efficiency.
%
Noise level L (A)
dB(A)
30
40
60
90
120
150
200
250
Matching engine 12h power (reference value)
kw|| tt||140
7600
580
320
≥16
≤89
t50
7400
700
≥360
18
89
160
7200||tt ||820
400
>20
≤89
.170
7000
930
≥420
23
≤90
180
6500
1050
450
>26
90
190
6300
1280
≥470
≥29
≤91
The right side of the black line contains generator varieties
9
4.3 The fan should be driven by a V-belt and its rotation direction should be counterclockwise from the driving end. 4.4 Materials
4.4.1 The materials and mechanical properties of the main parts of the fan shall comply with the requirements of Table 2. 4.4.2 In addition to the above materials, other materials may also be used if they can meet the performance requirements specified in this standard. 210
6100
1630
≥490
332
691
15
Parts name
Wind horn
Impeller
Wheel
Wind shaft
V-belt pulley
Stator sheet
Bearing library
4.5 Manufacturing and appearance
JB/T6723.3-1999
Table 2 Main parts materials
Material
ZL101.ZL102
YL104||tt| |45
08，08F
Hr200
Q235
DR510-50
08，08F
Material
Performance requirements
According to GB/T1173
According to GB/T15115
According to GB/T699
According to GB/T699
According to GB/T9439
According to GB/T700
According to GB/T5212
According to GB/T699
4.5.1 Impeller components should be statically balanced. The allowable unbalance amount and the weight removal part when correcting the balance should be in accordance with the product drawings. 4.5.2 The bearings should have protective devices and the bearing space should maintain an appropriate amount of grease. 4.5.3. The outer surface of the fan should be smooth and clean, without obvious damage or defects: the coating should be free of rust, layering, and peeling; the paint layer should be even, complete and firm, without bubbles, accumulation, or flow marks.
4.5.4 The size, shape and position requirements of the appearance and installation parts (including parts related to the matching cooling radiator) shall comply with the product drawings.
4.5.5 Parts should be in place correctly and there are no missing parts: the fastening should be reliable; the impeller should rotate flexibly without friction or blockage. 4.5.6 The axial movement of the fan shaft should be less than 0.2mm. 4.5.7 There is no abnormal sound during operation.
4.6 Usage performance
4.6.1
4.6.2
4.6.3
4.6.4
4.6.5|| tt||4.6.6
Fan performance should comply with the table! Require.
The fan generator should also comply with the provisions of 4.6.3~4.6.11. The generator adopts the maximum continuous rated working system. The generator protection level is based on IPX3 in GB/T4942.1. The insulation of generator windings shall not be lower than Class B.
The rated voltage and cold operating performance of the generator should comply with the requirements of Table 3. The generator temperature rise limit is 60℃.
4.6.7
4.6.8 The insulation between the live conductor and the non-live conductor of the fan generator shall not be broken down after passing the 550V withstand voltage test. After the fan generator has passed the following tests, no parts are damaged or fasteners are loose, and the cold working performance still meets the requirements of Table 3: 4.6.9
a) Overspeed test of 1.2 times the calibrated speed: ||tt ||b) 10° vibration test.
4.6.10 After the fan generator has passed the following tests, the appearance quality should be intact, and the cold state and working performance should still comply with the requirements of Table 3: a) high temperature test of 85℃;
b) -10℃ And temperature change test of +85℃. 4.6.11 After the fan generator undergoes a 3000-h endurance test, the reduction rate of the rated output power shall not be greater than 5%. 4
Transfer
Speed
r/min
na
1) In case of calibration transfer
JB/T 6723.31999|| tt||Table 3 Generator cold working performance
Terminal voltage
v
Lighting type
≥12
>7
≤15.5
2) ngm—minimum operating speed, nm=0.5n. 3) n—maximum working speed, n.=1.1n. 4) It should reach 9V after taking additional technical measures. 5)P, a rated output power.
Warranty period
4.7
Rechargeable type
≥14
9
≤22
Output power|| tt||w
aP
If the user selects a reasonable model and abides by the manufacturer's storage, installation and use rules, the fan will be Within 3000h), if it cannot work properly, the manufacturer shall repair or replace it free of charge. Inspection method
According to JB/T6723.4.
6
Inspection Rules
6.1
Fans must pass the inspection by the quality inspection department of the manufacturer before leaving the factory. 6.2 Factory inspection
The fan should be inspected according to the requirements of 4.5.3~4.5.7 before leaving the factory. The fan generator should also be inspected according to the requirements of 4.6.6 and 4.6.8.
6.3 Type inspection
The manufacturer shall conduct type inspection on the product no less than once every two years in accordance with the technical requirements specified in this standard. 6.4 When the fans are delivered and accepted in batches, the inspection items are the same as the factory inspection. The ordering unit shall conduct random inspections of product quality in accordance with the provisions of GB/2828.
7
Logo, packaging, purchase and inventory
7.1 Each fan should be marked in a visible part: a) Product name and model:
b) Calibrated speed, rated speed Voltage and rated output power; c) Factory number:
d) Manufacturing date;
e) Manufacturer's name and trademark.
The mark should be clear and reliable; the marking location, size and method should comply with the product drawings or technical documents. 7.2 When the fan leaves the factory, it should be accompanied by a certificate of conformity signed by the inspector of the quality inspection department of the manufacturer. Fans should be placed in cardboard boxes or wooden boxes in a certain quantity, stably and reliably. There should be no movement of the product in the box to ensure that it will not be lost or damaged during normal transportation. JB/T6723.3—1999
7.4 The total mass of the packaging box should not exceed 25kg. The product instruction manual and packing list should be included in the box. The fans in each packaging box should be of the same model. The outside of the packaging box should be marked: a) product name and model:
b) manufacturer name and address;
e) quantity;
d) gross weight:
e ) "Handle with care", "Protect against moisture" and other signs. 7.5 The fan should be stored in a ventilated and dry warehouse.4. When the fans are delivered and accepted in batches, the inspection items are the same as the factory inspection. The ordering unit shall conduct random inspections of product quality in accordance with the provisions of GB/2828.
7
Logo, packaging, purchase and inventory
7.1 Each fan should be marked in a visible part: a) Product name, model:
b) Calibrated speed, rated Voltage and rated output power; c) Factory number:
d) Manufacturing date;
e) Manufacturer’s name and trademark.
The mark should be clear and reliable; the marking location, size and method should comply with the product drawings or technical documents. 7.2 When the fan leaves the factory, it should be accompanied by a certificate of conformity signed by the inspector of the quality inspection department of the manufacturer. Fans should be placed in cardboard boxes or wooden boxes in a certain quantity, stably and reliably. There should be no movement of the product in the box to ensure that it will not be lost or damaged during normal transportation. JB/T6723.3—1999
7.4 The total mass of the packaging box should not exceed 25kg. The product instruction manual and packing list should be included in the box. The fans in each packaging box should be of the same model. The outside of the packaging box should be marked: a) product name and model:
b) manufacturer name and address;
e) quantity;
d) gross weight:
e ) "Handle with care", "Moisture-proof" and other signs. 7.5 The fan should be stored in a ventilated and dry warehouse.4 When the fans are delivered and accepted in batches, the inspection items are the same as the factory inspection. When the ordering unit conducts random inspection of product quality, it should be carried out in accordance with the provisions of GB/2828.
7
Marking, packaging, purchase and storage
7.1 Each fan should be marked in a conspicuous position: a) product name and model:
b) rated speed, rated voltage and rated output power; c) factory number:
d) manufacturing date;
e) manufacturer's name and trademark.
The marking should be clear and reliable; the marking position, size and method should comply with the product drawings or technical documents. 7.2 When the fan leaves the factory, it should be accompanied by a certificate signed by the inspection personnel of the quality inspection department of the manufacturer. The fans should be placed in a certain number, stably and reliably in a cardboard box or a wooden box. The product should not move in the box to ensure that it will not be lost or damaged during normal transportation. 7.3
JB/T6723.3—1999
7.4 The total weight of the packing box should not exceed 25kg. The box should be accompanied by the product manual and packing list. The fans in each packing box should be of the same model. The outside of the packing box should be marked with: a) Product name and model:
b) Manufacturer name and address;
e) Quantity;
d) Gross weight:
e) "Handle with care", "Moisture-proof" and other signs. 7.5 Fans should be stored in a ventilated and dry warehouse.
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