CN105737974B - Automobile air conditioner compressor noise testing testing stand - Google Patents
Automobile air conditioner compressor noise testing testing stand Download PDFInfo
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- CN105737974B CN105737974B CN201610261429.5A CN201610261429A CN105737974B CN 105737974 B CN105737974 B CN 105737974B CN 201610261429 A CN201610261429 A CN 201610261429A CN 105737974 B CN105737974 B CN 105737974B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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Abstract
The invention discloses a kind of automobile air conditioner compressor noise testing testing stands, to solve the problems, such as that compressor of air conditioner noise testing result is inaccurate comprising variable-frequency motor device, air-conditioning device, sound transducer support device and sound insulation closure assembly and information processing unit；Variable-frequency motor device is separately mounted to the left and right side of testing stand with air-conditioning device, sound insulation closure assembly is mounted between the above two, tested compressor of air conditioner is mounted in sound arrester, sound transducer support device is mounted on around compressor of air conditioner, small belt pulley is fixed on the compressor input shaft of compressor of air conditioner, air-conditioning device one end is connect with compressor of air conditioner air inlet, and the air-conditioning device other end is connect with refrigeration compressor ventilating mouth；The speed probe of information processing unit is mounted on compressor input shaft, 4 sound transducers of information processing unit are mounted in sound transducer support device, and two temperature sensors and two pressure sensors are separately mounted at the suction and exhaust ports of compressor of air conditioner.
Description
Technical field
The present invention relates to a kind of noise testing experimental rigs, it more particularly relates to which a kind of air conditioning for automobiles compresses
Machine noise testing testing stand.
Background technology
With the raising of automobile engine and the noise and vibration control technology of power drive system, automotive air-conditioning system
Noise level is increasingly valued by people, and heart of the compressor as automotive air-conditioning system, noise and vibration problem is also cured
To be cured the concern for causing consumer.The demand in market also brings the keen competition between Vehicular air-conditioner compressor manufacturer, in order to
Increase market occupancy volume, each Vehicular air-conditioner compressor producer also begins to the performance that input energy improves product various aspects, to noise
With the Optimal improvements of level of vibration also place must be striven as each manufacturer.
It is studied at present in many people of air conditioning for automobiles noise this respect, but patent in this respect is very little.Very much
What researcher did is interior compressor of air conditioner noise testing and not indoor automobile air conditioner compressor noise testing.The former has very
Big disadvantage：1. automobile noise has this many type, if directly measure in the car compressor of air conditioner noise can cause it is prodigious
Error causes experimental result inaccurate, loses the purpose of experiment；2. noise testing is carried out in the car, since interior space is narrow
Small, sound transducer is difficult arrangement and the fixed damage for being easy to cause sensor.Indoor automobile air conditioner compressor noise testing solution
It has determined above defect, researcher is suitble to carry out noise testing experiment.What this patent was related to is exactly a kind of indoor air conditioning for automobiles
Compressor noise is test bed.
Invention content
The technical problem to be solved by the present invention is to overcome, existing compressor of air conditioner noise testing result is inaccurate to ask
Topic, provides a kind of automobile air conditioner compressor noise testing testing stand.
In order to solve the above technical problems, the present invention adopts the following technical scheme that realization：The air conditioning for automobiles compression
Machine noise testing testing stand includes variable-frequency motor device, air-conditioning device, sound transducer support device, sound insulation closure assembly and information
Processing unit.
The variable-frequency motor device includes small belt pulley；
The sound transducer support device includes the identical sound transducer supporting rack of 4 structures；
The sound insulation closure assembly includes blimp；
The information processing unit includes that speed probe, the identical sound transducer of 4 structures, 2 structures are identical
Temperature sensor, the identical pressure sensor of 2 structures and computer；
The variable-frequency motor device is mounted on the left side of testing stand, and air-conditioning device is mounted on the right side of testing stand, sound insulation
Closure assembly is mounted on the testing stand between variable-frequency motor device and air-conditioning device, and tested compressor of air conditioner passes through compressor branch
It supports seat to be mounted in blimp, the identical sound transducer supporting rack of 4 structures is mounted on around tested compressor of air conditioner
On testing stand, small belt pulley is mounted on to be keyed on the compressor input shaft in tested compressor of air conditioner, air-conditioning device
The air inlet piping connection of one end and tested compressor of air conditioner, the row of the other end of air-conditioning device and tested compressor of air conditioner
Gas port piping connection；Speed probe is mounted on compressor input shaft, and the identical sound transducer of 4 structures is mounted on 4
On the identical sound transducer supporting rack of structure, the exhaust ports of tested compressor of air conditioner be sequentially installed with temperature sensor and
Pressure sensor is sequentially installed with another set of temperature sensor and pressure sensor at the air entry of tested compressor of air conditioner,
Speed probe, the identical sound transducer of 4 structures, the identical temperature sensor of 2 structures and the identical pressure of 2 structures
Sensor is connected by conducting wire USB port with computer.
Variable-frequency motor device described in technical solution further includes variable-frequency motor, frequency converter control cabinet, belt, motor output
Axis, compressor input shaft and big belt pulley.Variable-frequency motor is mounted on the top of frequency converter control cabinet and is fixed using bolt, nut
Connection, the output end of variable-frequency motor and one end of motor output shaft connect, and the other end of motor output shaft is equipped with big belt pulley,
Between the two using key connection, for belt sleeve mounted in big belt pulley on small belt pulley, compressor input shaft uses key and belt lace
Wheel connection, variable-frequency motor (1) are connect with frequency converter electric wire.
Air-conditioning device described in technical solution include the identical pipeline support frame of 4 structures, device for drying and filtering, visor,
Fan, air blower, No. 2 heating wire, expansion valve, evaporator, condenser device crooked pipeline identical with 2 structures；Described
Condenser device includes condenser, condenser supporting rod and condenser support base, the lower end of condenser supporting rod and condensation
It is fixedly connected at the center of device support base, the top of condenser supporting rod is fixedly connected with the bottom surface of condenser four corners；The
One crooked pipeline is mounted on the right back of compressor of air conditioner, and condenser device is placed on the testing stand immediately below crooked pipeline
On, fan is installed, first crooked pipeline outlet end uses the input end of pipeline and device for drying and filtering immediately below condenser
Connection, the outlet end of device for drying and filtering and one end piping connection of visor, the other end of visor and one end pipeline of expansion valve connect
It connects, the input end piping connection of the other end of expansion valve and second crooked pipeline, connects expansion valve and second crooked pipeline
Pipeline and testing stand between be evenly distributed the identical pipeline support frame of 2 structures, the outlet end of second crooked pipeline with
One end piping connection of temperature sensor is connected and is installed between second crooked pipeline and the pipeline and testing stand of temperature sensor
One end pipeline of the identical pipeline support frame of third structure, first crooked pipeline input end and another temperature sensor connects
It connects, it is identical to connect the 4th structure of installation between first crooked pipeline and the pipeline and testing stand of another temperature sensor
Pipeline support frame, second crooked pipeline are mounted on the right front of compressor of air conditioner (8), are installed immediately below second crooked pipeline
There is evaporator, No. 2 heating wire are installed below evaporator, air blower is installed below No. 2 heating wire.
Crooked pipeline described in technical solution is processed as crooked pipeline shape, i.e. crooked pipeline is identical by 5 row's structures
Straight pipeline circular arc pipeline identical with 4 structures forms, and is mutually parallel between 5 row's straight pipelines and in same level, appoints
The distance between two adjacent straight pipelines of anticipating are equal, using the identical circular arc pipeline of 4 structures by the identical straight pipeline of 5 row's structures
It is sequentially connected end to end.
Horizontally disposed first crooked pipeline above the flabellum alignment condenser of fan described in technical solution, and
Fan and first crooked pipeline vertical range are 10cm~20cm；The vertical range of air blower and heating wire be 10cm~
20cm。
Sound transducer supporting rack described in technical solution includes supporting block, support column, height adjusting blocks, screw rod, consolidates
Determine block, cross bar, groove profile folder, sensor support bar and the identical square plate of 6 structures.The identical square plate of 6 structures
One end be uniformly fixed to around support column lower end by welding manner, the upper end and side of the identical supporting block of 3 structures
Shape piece is connected by screw bolts, and screw rod is inserted directly into the centre bore of height adjusting blocks and support column, the side that fixed block passes through welding
Formula is fixed on the top of screw rod, and a screw hole is radially provided on the side wall of fixed block, and one end and the fixed block screw thread of cross bar connect
It connects, the screw rod end of sensor support bar is inserted into be fixedly connected in the threaded hole of cross bar one end, and groove profile folder is bolted to
The top of supporting rod.
The sound insulation closure assembly includes No. 1 heating wire and blimp.The blimp is the close of cuboid case type
Seal apparatus, for the inner and outer wall of blimp using galvanized steel plain sheet, inner wall surface is coated with the damping coatings material of 3mm, intermediate
Interlayer has two layers, and close to one layer choosing acoustical cotton of outer wall and sound absorption fibrous material, intermediate course is filled with guarantor for one layer close to inner wall
Adiabator, there are one shaft hole, the diameter of shaft hole and the pressures on tested compressor of air conditioner for setting on the left side wall of blimp
The diameter of contracting machine input shaft is equal, and aspirating air pipe hole and discharge duct hole, the diameter in two holes are provided on the right side wall of blimp
Equal with the diameter of air-conditioning duct, blimp front end is provided with a metallic door, and metallic door is closed when experiment, same inside metallic door
It is covered with sound-absorbing material and thermal insulation material；No. 1 heating wire is mounted in blimp, and No. 1 heating wire is divided into two groups, installs respectively
In the right inner side wall of blimp and the holder of preceding madial wall on, heating wire conducting wire is wrapped up by porcelain tube, porcelain tube pass through blimp with
External temperature control device connection, blimp internal temperature are 50~80 degrees Celsius.
Compared with prior art the beneficial effects of the invention are as follows：
1. automobile air conditioner compressor noise testing testing stand of the present invention uses and carries out noise testing in blimp
Mode, improve the accuracy of experimental results.
2. the blimp used in automobile air conditioner compressor noise testing testing stand of the present invention is variable-frequency motor, cold
Condenser, evaporator, air blower etc. are isolated in outside, reduce influence of the extraneous factor to noise testing.The outer wall of blimp and
Inner wall is made of galvanized steel plain sheet metal material, and inner wall is coated with the damping coatings material of 3mm, and intermediate course has two layers, close to outer
The sound-absorbing materials such as one layer choosing acoustical cotton of wall, sound absorption fiber, reach very high soundproof effect, make the experiment need not be in anechoic room
Progress can also reach very high accuracy.
3. the blimp intermediate course that automobile air conditioner compressor noise testing testing stand of the present invention uses is close to interior
One layer of wall is filled with thermal insulation material, and heating wire is equipped in blimp, ensures that blimp maintains a suitable temperature always
Section, simulated automotive compressor of air conditioner working temperature environment.
4. the variable-frequency motor that automobile air conditioner compressor noise testing testing stand of the present invention uses utilizes V belt translation side
Formula drives compressor normal work, realizes that compressor works under different rotating speeds operating mode by adjusting frequency converter.
5. the sound sensor support in automobile air conditioner compressor noise testing testing stand of the present invention uses screw rod,
It can be adjusted, be solved existing by cross bar with adjusting bracket height, the direction of sound transducer by height adjusting blocks
Device cannot accurate measurement noise the shortcomings that.
Description of the drawings
The present invention will be further described below with reference to the drawings：
Fig. 1 is the front view of automobile air conditioner compressor noise testing test platform structure of the present invention composition；
Fig. 2 is the automobile air conditioner compressor noise testing test platform structure composition of the present invention for not installing blimp
Vertical view；
Fig. 3 is the left view of automobile air conditioner compressor noise testing test platform structure of the present invention composition；
Fig. 4 is the axis of the air-conditioning device structure composition in automobile air conditioner compressor noise testing testing stand of the present invention
Survey projection view；
Fig. 5-1 is the sound transducer supporting rack that automobile air conditioner compressor noise testing testing stand of the present invention uses
The axonometric projection view of structure composition；
Fig. 5-2 is the sound transducer supporting rack that automobile air conditioner compressor noise testing testing stand of the present invention uses
The axonometric projection view of middle sound transducer supporting bar structure composition；
Fig. 6 is the axis for the blimp structure composition that automobile air conditioner compressor noise testing testing stand of the present invention uses
Survey projection view；
Fig. 7 is the air-conditioning condenser structure composition that automobile air conditioner compressor noise testing testing stand of the present invention uses
Axonometric projection view；
Fig. 8 is the air-conditioning duct support frame structure that automobile air conditioner compressor noise testing testing stand of the present invention uses
The axonometric projection view of composition；
In figure：1. variable-frequency motor, 2. frequency converter control cabinets, 3. belts, 4. compressor input shafts, 5. speed probes, 6.1
Number heating wire, 7. blimps, 8. compressors of air conditioner, 9. air-conditioning ducts, 10. temperature sensors, 11. pressure sensors, 12. pipelines
Supporting rack, 12-1. pipeline support frame pedestals, 12-2. pipe struts, 12-3. pipeline jigs, 13. condensers, 14. is dried
Filter, 15. visors, 16. sound transducer supporting racks, 16-1. supporting blocks, 16-2. nuts, 16-3. support columns, 16-4. height
Adjusting block, 16-5. screw rods, 16-6. fixed blocks, 16-7. cross bars, 16-8. sound transducers, 16-9. groove profiles folder, 16-10. spiral shells
Bolt, 16-11. sensor support bars, 16-12. square plates, 17. compressor support bases, 18. fans, 19. air blowers, No. 20.2 electricity
Heated filament, 21. expansion valves, 22. motor output shafts, 23. evaporators, 24. small belt pulleys, 25. shaft holes, 26. aspirating air pipe holes,
27. discharge duct hole, 28. condenser supporting rods, 29. condenser support bases, 30 crooked pipelines.
Specific implementation mode
The present invention is explained in detail below in conjunction with the accompanying drawings：
Refering to fig. 1 with Fig. 2, automobile air conditioner compressor noise testing testing stand of the present invention includes variable-frequency motor dress
It sets, air-conditioning device, sound transducer support device, sound insulation closure assembly and information processing unit.
Refering to fig. 1 with Fig. 3, the variable-frequency motor device includes variable-frequency motor 1, frequency converter control cabinet 2, belt 3, compression
Machine input shaft 4, motor output shaft 22, big belt pulley and small belt pulley 24；The wherein variable-frequency motor 1, frequency converter control cabinet
2, belt 3, small belt pulley 24 are standard component；Compressor input shaft 4 and motor output shaft 22 are non-standard component.
The frequency converter control cabinet 2 chooses PLG variable-frequency motor switch boards, including cabinet, frequency converter, control system, system
Dynamic system.Wherein cabinet is divided into three layers, and frequency converter is installed by top layer, and middle layer installs braking system, and lowest level installs braking system
System, frequency converter select HGD303 series open-loop vector control frequency converters.Frequency converter is vertically mounted on the top layer of cabinet.The change
Frequency motor 1 is open loop variable-frequency motor, and variable-frequency motor bottom itself just has motor base, motor base the right and left to be respectively arranged with
Two screw holes.Frequency converter control cabinet is rectangle, and there are four screw hole, the screw hole of screw hole size and variable-frequency motor pedestal is equal at top.
The variable-frequency motor device includes two belt pulleys, and it is small belt pulley 24 to be connected with tested 8 input shaft of compressor of air conditioner,
The belt pulley being connect with motor output shaft 22 be big belt pulley, 2 times of a diameter of small belt pulley diameter of big belt pulley, two belt pulleys
Outer surface is dentation, and dentation, tooth form size are consistent.Belt 3 uses steel wire toothed belt, steel wire toothed belt inner surface
For dentation, belt inner surface tooth form matches with outer pulley surface tooth form.The motor output shaft 22 is according to variable-frequency motor 1
Seat No. and number of poles are chosen.
When variable-frequency motor 1 is installed, only the top of variable-frequency motor pedestal and frequency converter control cabinet 2 need to be passed through bolt, nut
It is fixedly connected.Frequency converter is vertically mounted on the top layer of cabinet, and surface and underface, which will avoid installing, may stop row
The big element of wind, air inlet.Variable-frequency motor 1 is connect with frequency converter electric wire, the output end of variable-frequency motor 1 and the one of motor output shaft 22
End is connected using shaft coupling, and the other end of motor output shaft 22 is connected by key with big belt pulley, and compressor input shaft 4 passes through key
The mode of connection is connect with small belt pulley 24.
The rotational speed regulation of tested compressor of air conditioner 8 can accurately be realized by frequency converter.By using change frequency conversion
The method of device frequency of supply changes the rotating speed of variable-frequency motor 1, then so that the rotating speed of tested compressor of air conditioner 8 is accorded with by belt transmission
It closes and requires.Frequency converter frequency setting formula be：
In formula：f1, the frequency and rated power of the f-frequency converters to be set, Hz, W；
n1- by the confidential rotating speed asked of air-conditioning measured compressed, r/min；
The rated speed of n-variable-frequency motor, r/min；
r2,r1Small belt pulley 24 on-compressor of air conditioner and variable-frequency motor and big belt pulley radius, mm.
Refering to fig. 1, Fig. 2, Fig. 4, the air-conditioning device include 9,4 identical pipeline support frames of structure of air-conditioning duct
12, device for drying and filtering 14, visor 15, compressor bearing 17, fan 18,19, No. 2 heating wire 20 of air blower, expansion valve 21, evaporation
Device 23, condenser device (condenser 13, condenser supporting rod 28, condenser support base 29), crooked pipeline 30.
Refering to fig. 1, it is the compressor of air conditioner for being tested automobile, air conditioner compressed machine base that tested compressor of air conditioner 8, which is chosen,
The right and left respectively there are two bolt hole, compressor support base 17 is the structural member of cuboid, compressor support base 17
There are four screw holes for top setting, and screw hole size and the bolt hole on air conditioner compressed machine base are equal in magnitude；The diameter of air-conditioning duct 9
Size is equal with the porting diameter of compressor of air conditioner 8.
Refering to Fig. 4, it is same bore that device for drying and filtering 14, which uses XH-9 models, both ends inlet and outlet connectors, and input end is crude metal
Net, outlet end are fine metal mesh, and both ends can complete sealing installation with air-conditioning duct.Visor 15 selects straight-through sight glass, visor straight
Diameter matches with air-conditioning duct diameter, completes sealing installation.No. 2 heating wire 20 choose nickel chromium triangle electrothermal alloys, heating wire be it is parallel,
In simultaneously row pattern, four groups are shared, every group of power is 2.5Kw, and No. 2 heating wire 20 are mounted on the lower section of evaporator 23.Expansion valve
21 select outer balanced type expansion valve, and the interior welding interface tube debugged, expansion valve 21 is selected to pass through welding at 21 port of expansion valve
Mode completes sealing installation with air-conditioning duct.The material and pipe radius of crooked pipeline 30 and 9 all same of air-conditioning duct, in order to
Evaporator 23 and condenser 13 come into full contact with, and pipeline processing is crooked pipeline shape, i.e. crooked pipeline 30 is identical by 5 row's structures
Straight pipeline forms, and is mutually parallel between 5 row's straight pipelines and in same level, 5 row's straight pipelines use circular arc from beginning to end successively
Pipeline connects.
Refering to Fig. 8, the pipeline support frame 12 includes pipeline support frame pedestal 12-1, pipe strut 12-2 and pipeline
Fixture 12-3.The pipeline support frame pedestal 12-1 is disc-like structural member, and the cross section of pipe strut 12-2 is circle
Straight-bar class formation part, pipeline jig 12-3 is semi-circular ring formula structural member, the inner diameter size of semi-circular ring with outside air-conditioning duct 9
Diameter is equal in magnitude.Pipeline jig 12-3 is fixed on by welding on the top of pipe strut 12-2, pipeline jig 12-
3 opening upwards, the tie point of the two are located at the symmetrical of the axis of rotation of pipe strut 12-2 and pipeline jig 12-3
On line, it is welded to connect at the bottom end of pipe strut 12-2 and the center of pipeline support frame pedestal 12-1, pipeline support frame pedestal
The axis of rotation of 12-1, the axis of rotation of pipe strut 12-2 are conllinear with the symmetrical line of pipeline jig 12-3；Pipeline branch
The height of support 12 is equal with the height for the air-conditioning duct 9 that it is supported.Entire pipeline is complete under the support of pipeline support frame 12
It is installed at sealing.
The fan 18 uses 4 leaf formula fans, there is blast regulator, can regulating air volume at any time；Air blower 19
Using cfentrifugal blower；No. 2 heating wire 20 are parallel heating wire, have it is a plurality of, can by control the item number of heating wire come
Change heat；Condenser supporting rod 28 and 29 section of condenser support base are circle, the lower end of condenser supporting rod 28 with
By being welded to form condenser support device at the center of condenser support base 29, condenser 13 selects coiled tube condenser,
Condenser 13 is by 4 support devices.
The pedestal of the tested compressor of air conditioner 8 is fixed on compressor support base 17 by bolted connection
Top, axis and the axis collinear where small belt pulley axle center of 8 input shaft 4 of compressor of air conditioner.Compressor of air conditioner 8 have air entry and
Exhaust outlet, discharge duct are connected to exhaust outlet, and aspirating air pipe is connected to air entry, and is tightly connected.Close to exhaust outlet, air-breathing
It is mounted on temperature sensor 10 and pressure sensor 11, discharge duct and aspirating air pipe on the discharge duct and aspirating air pipe of mouth
In the exhaust pipe road junction 27 and air intake duct road junction 26 be inserted on 7 side wall of blimp respectively and stretch out except 7 side wall of blimp.Air-conditioning
Pipeline 9 is fixed by the identical support of pipeline support frame 12 of each structure.
Refering to Fig. 4, there are one crooked pipeline 30, crooked pipelines 30 for the right back position installation of tested compressor of air conditioner 8
Underface condenser 13 is installed, the underface of condenser 13 is equipped with fan 18, and the flabellum of fan 18 is directed at condenser 13
The horizontally disposed crooked pipeline 30 and 30 vertical range of range curvature pipeline of top are between 10cm~20cm.The confession of fan 18
Electric frequency is by mono- 6E type Frequency Converter Controls of VF, and to change 18 rotating speed of fan, exhaust can be adjusted by changing 18 blast intensity of fan
Temperature and pressure at expulsion.
Refering to Fig. 4 and Fig. 7, condenser device includes that (condenser supports 13,4 identical support devices of structure of condenser
Bar 28, condenser support base 29).The cross section of condenser supporting rod 28 and condenser support base 29 is circle, condensation
It is welded to connect or is threadedly coupled at the lower end of device supporting rod 28 and the center of condenser support base 29, condenser supporting rod 28
The bottom surface of 13 four corners of top and condenser is welded to connect or is threadedly coupled, and condenser 13 ensure that by 4 support devices
The stationarity of condenser 13.30 right end of crooked pipeline of 13 top of cold doubtful device is sequentially installed with device for drying and filtering using pipeline
14, visor 15, expansion valve 21.It is same diameter that device for drying and filtering 14, which uses XH-9 models, both ends inlet and outlet connectors, and inlet side is crude metal
Net, outlet are fine metal mesh, and both ends can complete sealing installation with air-conditioning duct.Visor 15 and expansion valve 21 are standard component,
Visor 15 selects straight-through sight glass, 15 diameter of visor to match with air-conditioning duct diameter, completes sealing installation.Expansion valve 21 is selected outer flat
Weighing apparatus formula expansion valve.
Refering to fig. 1 with Fig. 4, the right front of tested compressor of air conditioner 8 is equipped with second crooked pipeline 30, and second curved
Evaporator 23 is installed, evaporator selects pipe to stick up plate evaporator, and the lower section of evaporator 23 is equipped with No. 2 immediately below curved tube road 30
Heating wire 20, heating wire are parallel, in simultaneously row pattern, share four groups, every group of power is 2.5Kw, passes through and controls No. 2 electric heating
The group number of silk 20 can control calorific value.No. 2 20 lower sections of heating wire are installed by air blower 19, the straight line of air blower 19 and heating wire 20
Distance is 10cm~20cm.When air-conditioning work, heat can be reached evaporator 23 by air blower 19, by changing evaporator 23
Caloric receptivity, thus it is possible to vary the pressure of inspiration(Pi) and suction temperature of compressor of air conditioner 8.
Refering to Fig. 4, Fig. 5-1, Fig. 5-2, the sound transducer support device includes the identical sound sensor of 4 structures
Device supporting rack 16, each sound transducer supporting rack 16 include supporting block 16-1, nut 16-2, support column 16-3, height adjusting
Block 16-4, screw rod 16-5, fixed block 16-6, cross bar 16-7, groove profile folder 16-9, bolt 16-10, sensor support bar 16-11 and 6
The identical square plate 16-12 of a structure.Nut 16-2 and bolt 16-10 is standard component, remaining is non-standard component.
The supporting block 16-1 is cuboid structural member, and the upper end of supporting block 16-1 is provided with screw hole, support column 16-
3 be iso-cross-section be circular straight-bar class formation part, is provided with threaded hole at the centers of support column 16-3 in an axial direction, threaded hole with
Screw rod 16-5 equipped is in screw thread pair, and height adjusting blocks 16-4 is annulus bodily form structural member, and the endoporus of height adjusting blocks 16-4 is arranged
It is elongated straight screw rod, the internal thread of the thread shape size and height adjusting blocks 16-4 of screw rod 16-5 to have internal thread, screw rod 16-5
Mutually equipped, fixed block 16-6 is cylindrical structure part, and the side of fixed block 16-6 has been disposed radially a tapped blind hole, cross bar
16-7 is elongated cylindrical straight-bar class formation part, and the outer surface of one end of cross bar 16-7 is provided with external screw thread, one end of cross bar 16-7
It is threadedly coupled with the threaded hole on fixed block 16-6, the other end of cross bar 16-7 is provided with a radial tapped through hole, and groove profile presss from both sides 16-
9 top halfs are the semi-circular ring structural members that cross section is semicircular ring shape, and the inner diameter size of semi-circular ring ensures sound sensor
The safe clamping of device, the lower half portion of semi-circular ring be provided with 2 structures with and axis of rotation with semi-circular ring it is parallel right
Claim the semicircular ear mount placed, concentric bolt hole, sensor support bar 16-11 are provided in the same ear mount of 2 structures
Top half is cylindrical smooth straight-bar, and end is provided with a radial screw hole, the lower half portion sensor support bar 16-11 on it
For promising externally threaded screw rod is arranged, square plate 16-12 is square flat part, spiral shell is provided at the center of square plate 16-12
Bolt throughhole.
One end of the identical square plate 16-12 of 6 structures is uniformly fixed to support column 16- by welding manner
Around 3 lower ends, the upper end of the identical supporting block 16-1 of 3 structures is carried out with square plate 16-12 using bolts and nuts 16-2
Connection, tightens the fixation that supporting block 16-1 can be completed in nut.Screw rod 16-5 is inserted directly into height adjusting blocks 16-4 and support column
In the centre bore of 16-3, the height of cross bar 16-7 can be adjusted by rotation height adjusting block 16-4.Fixed block 16-6 passes through weldering
The mode connect is fixed on the top of screw rod 16-5, and a screw hole is radially provided on the side wall of fixed block 16-6, cross bar 16-7's
The mode that one end is connected through a screw thread is connected with fixed block 16-6.It can change sound transducer by rotary bar 16-7
The direction of 16-8.The side of being connected through a screw thread in the screw hole of cross bar 16-7 at one ends is inserted at the screw rod end of sensor support bar 16-11
Formula is fixedly connected with cross bar 16-7, can change direction and the height of sound transducer 16-8 by rotating supporting rod 16-11.Slot
Type folder 16-9 is fixed on the top of supporting rod 16-11, sound transducer 16-8 in such a way that bolt 16-10 is connected through a screw thread
It is fixed in groove profile folder 16-9, ensure that the stabilization of sound transducer 16-8, avoid the damage of sound transducer 16-8 and fall off.
The sound transducer supporting rack 16 has 4, is located at the front of tested compressor of air conditioner 8, and dead astern is positive left
Side, front-right, and centre distances of the sound transducer 16-8 away from tested compressor of air conditioner 8 are 1 meter.
Refering to fig. 1, Fig. 6, the sound insulation closure assembly include No. 1 heating wire 6, blimp 7.
The blimp 7 is the shell structure part of rectangular shape, and the inner and outer wall of blimp is using galvanized steel
Plate, inner wall surface are coated with the damping coatings material of 3mm, and intermediate course has two layers, fine close to one layer choosing acoustical cotton of outer wall, sound absorption
The sound-absorbing materials such as dimension, intermediate course are filled with thermal insulation material for one layer close to inner wall, can reach the interference for reducing external environmental noise
With guarantee blimp internal temperature in a certain range of effect, the accuracy of test ensure that.No. 1 heating wire 6 is mounted on
In blimp 7, No. 1 heating wire 6 has two groups, is separately mounted in the right inner side wall of blimp 7 on preceding madial wall, heating wire is led
Line is wrapped up by porcelain tube, and porcelain tube passes through blimp 7 to be connect with outside temperature control device, temperature control device with heating wire be it is matching used,
External temperature control device can control internal temperature, this requirement of experiment at 50-80 degrees Celsius, simulates internal temperature control
The true working environment of compressor.There are one shaft hole 25, the sizes and quilt of the diameter of shaft hole 25 on the left side wall of blimp 7
8 diameter of compressor of air conditioner of survey it is equal in magnitude, aspirating air pipe hole 26 and discharge duct hole 27 are provided on the right side wall of blimp,
The size of two bore dias is equal with the diameter of air-conditioning duct 9, ensures that air-conditioning duct passes through.There is a metal in blimp front end
, it is equally covered with sound-absorbing material and thermal insulation material inside metallic door, before experiment, opens metallic door, experimenter can be by complete
At the inspection of experimental facilities, in experiment, metallic door is closed, and blimp 7 is sealing device, not by extraneous factor when guarantee test
It influences.
Refering to fig. 1, Fig. 2, Fig. 4, the information processing unit include speed probe 5, sound transducer 16-8, temperature
Sensor 10, pressure sensor 11 and computer.
The speed probe 5 selects magnetoelectric tachometric transducer, sound transducer 16-8 that TZ-2KA sound is selected to pass
Sensor, temperature sensor 10 select thermistor temperature sensor, pressure sensor 11 to select PTC302 pressure sensors.
The speed probe 5 is flexible coupling mode on compressor input shaft 4 by flanged joint, revolution speed sensing
The axle center of device 5 and the input shaft axis of compressor of air conditioner 8 are collinear, are used for the rotating speed of test compression machine input shaft 4；The sound
Sensor 16-8 is mounted on the groove profile folder 16-9 of sound transducer supporting rack 16, and when installation will handle with care, and sound is avoided to pass
Sensor is damaged the noise for measuring compressor of air conditioner 8 under different operating rotating speed；The exhaust of the compressor of air conditioner 8
Temperature sensor 10 and pressure sensor 11 are mounted on pipeline and aspirating air pipe, for measure exhaust, air-breathing temperature and
Pressure facilitates temperature and pressure control in appropriate range.Above-mentioned sensor is connected by conducting wire USB port and computer
It connects, after spectrum analysis and relevant treatment, researcher can observe directly rotary speed data, noise number by computer
According to temperature data and pressure data.
The operation principle of automobile air conditioner compressor noise testing testing stand of the present invention：
The subjects of this testing stand are mainly for general automobile air conditioner compressor, and experimental condition is based on Japanese army
Work standard, referring to table 1.
1 automobile air conditioner compressor noise testing bench run condition of table
| Operating mode 1 | Operating mode 2 | Operating mode 3 | |
| Rotating speed/(r/min) | 800 | 5500 | 8400 |
| Pressure of inspiration(Pi)/MPa | 0.35 | 1.4 | 0.06 |
| Pressure at expulsion/MPa | 2.85 | 0.17 | 1.2 |
| Suction temperature/degree Celsius | 20 | 8 | -5 |
The experimental condition that the experimental bench is made according to operating condition of test is：50-80 degrees Celsius of compressor ambient temperature；Air-breathing
Pressure is 0.02-0.45MPa；Pressure at expulsion is 1.0-3.0MPa；Compressor rotary speed is 500-9000r/min.
When experiment, the frequency of frequency converter is adjusted, changes the rotating speed of variable-frequency motor 1, drives the motor output shaft of variable-frequency motor
22 rotations, motor output shaft 22 drive the rotation of big belt pulley, and the radius of small belt pulley 24 is the half of big belt pulley radius, institute
Using the angular speed of small belt pulley 24 as twice of big belt pulley angular speed.Small belt pulley 24 is connected with compressor input shaft 4 by key
It connects, the rotation of small belt pulley 24 drives the rotation of compressor input shaft 4, speed probe 5 that can measure compressor input shaft 4
Rotating speed, that is, compressor of air conditioner 8 rotating speed.Because compressor of air conditioner 8 is installed against variable-frequency motor 1, so surrounding ring
Border temperature is relatively high, between 50 1 80 DEG C.This testing stand is in order to simulate the actual working environment of compressor of air conditioner 8, by air-conditioning
Compressor 8 is mounted in blimp 7, and 7 inner surface of blimp is attached to sound insulating material and thermal insulation material, there is No. 1 electricity in blimp 7
Heated filament 6, by controlling No. 16 break-make of heating wire with the mating temperature controller of No. 1 heating wire 6 to ensure the temperature environment of compressor of air conditioner 8
In the range of requiring.In order to realize different operating modes, it can be recepted the caloric by change evaporator 23 and change pressure of inspiration(Pi), No. 2
Heating wire 20 is parallel heating wire, in simultaneously row pattern, shares four groups, every group of power is 2.5Kw, and the caloric receptivity of evaporator 23 can
To be changed by adjusting 20 groups of numbers of No. 2 heating wire, pressure of inspiration(Pi) can be measured by pressure sensor 11；Pressure at expulsion can be with
It is adjusted by changing 18 air quantity of fan, this testing stand changes the frequency of supply of fan using mono- 6E type frequency converters of VF, to change
Become rotation speed of the fan, pressure at expulsion can be measured by pressure sensor 11.In 8 front of compressor of air conditioner, dead astern is positive left
Square, one sound transducer 16-8 of each device at one meter of front-right, sound transducer 16-8 are mounted on sound transducer supporting rack
On 16, the height of sound transducer can be adjusted by adjusting height adjusting blocks 16-4 and sensor support bar 16-11；Pass through rotation
The height of sound transducer 16-8 can be adjusted by turning cross bar 16-7；Sound transducer 16-8 is mounted in groove profile folder 16-9, is ensured
The stabilization of sound transducer 16-8, avoids the damage of sound transducer 16-8 and falls off.Sound transducer 16-8, revolution speed sensing
The data that device 5, temperature sensor 10, pressure sensor 11 receive reach computer by conducting wire USB, and computer passes through frequency spectrum
With after relevant treatment, each data can be observed on computers, facilitate the research of researcher for analysis.
Claims (7)
1. a kind of automobile air conditioner compressor noise testing testing stand, which is characterized in that the automobile air conditioner compressor noise is surveyed
It includes variable-frequency motor device, air-conditioning device, sound transducer support device, sound insulation closure assembly and information processing apparatus to try testing stand
It sets；
The variable-frequency motor device includes small belt pulley (24)；
The sound transducer support device includes the identical sound transducer supporting rack (16) of 4 structures；
The sound insulation closure assembly includes blimp (7)；
The information processing unit includes speed probe (5), the identical sound transducer (16-8) of 4 structures, 2 structures
Identical temperature sensor (10), the identical pressure sensor (11) of 2 structures and computer；
The variable-frequency motor device is mounted on the left side of testing stand, and air-conditioning device is mounted on the right side of testing stand, blimp dress
It sets on the testing stand between variable-frequency motor device and air-conditioning device, tested compressor of air conditioner (8) passes through compressor branch
It supports seat (17) to be mounted in blimp (7), the identical sound transducer supporting rack (16) of 4 structures is mounted on tested air-conditioning pressure
On testing stand around contracting machine (8), small belt pulley (24) is mounted on the compressor input shaft in tested compressor of air conditioner (8)
(4) it is key connection on, the air entry piping connection of one end of air-conditioning device and tested compressor of air conditioner (8), air-conditioning device
The exhaust outlet piping connection of the other end and tested compressor of air conditioner (8)；Speed probe (5) is mounted on compressor input shaft
(4) on, the identical sound transducer (16-8) of 4 structures is mounted on the identical sound transducer supporting rack (16) of 4 structures,
The exhaust ports of tested compressor of air conditioner (8) are sequentially installed with temperature sensor (10) and pressure sensor (11), tested
Another set of temperature sensor (10) and pressure sensor (11) are sequentially installed at the air entry of compressor of air conditioner (8), rotating speed passes
The identical sound transducer (16-8) of sensor (5), 4 structures, the identical temperature sensor (10) of 2 structures and 2 structure phases
Same pressure sensor (11) is connected by conducting wire USB port with computer.
2. automobile air conditioner compressor noise testing testing stand described in accordance with the claim 1, which is characterized in that the variable-frequency electric
Machine device further includes variable-frequency motor (1), frequency converter control cabinet (2), belt (3), motor output shaft (22), compressor input shaft
(4) and big belt pulley；
Variable-frequency motor (1) is mounted on the top of frequency converter control cabinet (2) and is fixedly connected using bolt, nut, variable-frequency motor (1)
Output end connect with one end of motor output shaft (22), the other end of motor output shaft (22) is equipped with big belt pulley, the two
Between using key connection, belt (3) is sleeved on big belt pulley and small belt pulley (24), compressor input shaft (4) using key with
Small belt pulley (24) connects, and variable-frequency motor (1) is connect with frequency converter electric wire.
3. automobile air conditioner compressor noise testing testing stand described in accordance with the claim 1, which is characterized in that the air-conditioning dress
It sets including the identical pipeline support frame (12) of 4 structures, device for drying and filtering (14), visor (15), fan (18), air blower
(19), No. 2 heating wire (20), expansion valve (21), evaporator (23), condenser device crooked pipeline identical with 2 structures
(30)；
The condenser device includes condenser (13), condenser supporting rod (28) and condenser support base (29), cold
It is fixedly connected at the lower end of condenser supporting rod (28) and the center of condenser support base (29), the top of condenser supporting rod (28)
End is fixedly connected with the bottom surface of condenser (13) four corners；
First crooked pipeline (30) is mounted on the right back of compressor of air conditioner (8), and condenser device is placed on the first swan-neck
On testing stand immediately below road (30), fan (18) is installed immediately below condenser (13), first crooked pipeline (30) goes out
Mouth end is connect using pipeline with the input end of device for drying and filtering (14), the outlet end of device for drying and filtering (14) and the one of visor (15)
Hold piping connection, one end piping connection of the other end and expansion valve (21) of visor (15), the other end of expansion valve (21) and the
The input end piping connection of two crooked pipelines (30), pipeline and examination of the connection expansion valve (21) with second crooked pipeline (30)
It tests between platform and is evenly distributed the identical pipeline support frame (12) of 2 structures, outlet end and the temperature of second crooked pipeline (30)
One end piping connection of sensor (10) is spent, pipeline and the experiment of second crooked pipeline (30) and temperature sensor (10) are connected
The identical pipeline support frame (12) of third structure, first crooked pipeline (30) input end and another temperature are installed between platform
One end piping connection of sensor (10), connect the pipeline of first crooked pipeline (30) and another temperature sensor (10) with
The 4th identical pipeline support frame of structure (12) is installed, second crooked pipeline (30) is mounted on air conditioner compressed between testing stand
The right front of machine (8), second crooked pipeline (30) underface are equipped with evaporator (23), and evaporator is equipped with below (23)
No. 2 heating wire (20), No. 2 heating wire (20) lower section installation air blowers (19).
4. automobile air conditioner compressor noise testing testing stand described in accordance with the claim 3, which is characterized in that the swan-neck
Road (30) is processed as crooked pipeline shape, i.e., crooked pipeline (30) is by the identical straight pipeline of 5 row's structures circle identical with 4 structures
Arc pipeline forms, and is mutually parallel between 5 row's straight pipelines and in same level, between two straight pipelines of arbitrary neighborhood away from
From equal, the identical straight pipeline of 5 row's structures is sequentially connected end to end using the identical circular arc pipeline of 4 structures.
5. automobile air conditioner compressor noise testing testing stand described in accordance with the claim 3, which is characterized in that the fan
(18) horizontally disposed first crooked pipeline (30) above flabellum alignment condenser (13), and fan (18) and first
Crooked pipeline (30) vertical range is 10cm~20cm；The vertical range of air blower (19) and heating wire (20) be 10cm~
20cm。
6. automobile air conditioner compressor noise testing testing stand described in accordance with the claim 1, which is characterized in that the sound passes
Sensor supporting rack (16) includes supporting block (16-1), support column (16-3), height adjusting blocks (16-4), screw rod (16-5), fixes
Block (16-6), cross bar (16-7), groove profile folder (16-9), sensor support bar (16-11) and the identical square plate (16- of 6 structures
12)；
One end of the identical square plate (16-12) of 6 structures is uniformly fixed to support column (16- by welding manner
3) around lower end, the upper end of the identical supporting block (16-1) of 3 structures is connected by screw bolts with square plate (16-12), screw rod
(16-5) is inserted directly into height adjusting blocks (16-4) with the centre bore of support column (16-3), and fixed block (16-6) passes through welding
Mode is fixed on the top of screw rod (16-5), and a screw hole, cross bar (16-7) are radially provided on the side wall of fixed block (16-6)
One end be threadedly coupled with fixed block (16-6), the one end cross bar (16-7) is inserted at the screw rod end of sensor support bar (16-11)
Screw hole is to be fixedly connected, and groove profile folder (16-9) is bolted to the top of supporting rod (16-11).
7. automobile air conditioner compressor noise testing testing stand described in accordance with the claim 1, which is characterized in that the blimp
Device includes No. 1 heating wire (6) and blimp (7)；
The blimp (7) is the sealing device of cuboid case type, and the inner and outer wall of blimp is using galvanized steel
Plate, inner wall surface are coated with the damping coatings material of 3mm, and intermediate course has two layers, close to one layer choosing acoustical cotton of outer wall and sound absorption
Fibrous material, intermediate course are filled with thermal insulation material close to one layer of inner wall, and there are one shafts for setting on the left side wall of blimp (7)
Hole (25), the diameter of shaft hole (25) is equal with the diameter of compressor input shaft (4) on tested compressor of air conditioner (8), every
Aspirating air pipe hole (26) and discharge duct hole (27), diameter and the air-conditioning duct (9) in two holes are provided on the right side wall of sound cover (7)
Diameter it is equal, blimp front end is provided with a metallic door, and metallic door is closed when experiment, and sound absorption material is equally covered with inside metallic door
Material and thermal insulation material；
No. 1 heating wire (6) is mounted in blimp (7), and No. 1 heating wire (6) is divided into two groups, is separately mounted to blimp
(7) in right inner side wall and on the holder of preceding madial wall, heating wire conducting wire is wrapped up by porcelain tube, and porcelain tube is across blimp (7) and outside
Portion's temperature control device connection, blimp (7) internal temperature are 50~80 degrees Celsius.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610261429.5A CN105737974B (en) | 2016-04-25 | 2016-04-25 | Automobile air conditioner compressor noise testing testing stand |
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|---|---|---|---|
| CN201610261429.5A CN105737974B (en) | 2016-04-25 | 2016-04-25 | Automobile air conditioner compressor noise testing testing stand |
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| CN105737974B true CN105737974B (en) | 2018-07-13 |
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| CN109556707A (en) * | 2018-12-10 | 2019-04-02 | 山东国金汽车制造有限公司 | A kind of test method of automobile cooling module fan monomer vibration noise |
| CN111207942A (en) * | 2020-02-27 | 2020-05-29 | 重庆大学 | NVH rack test system of air condition compressor |
| CN112067111A (en) * | 2020-08-21 | 2020-12-11 | 盐城工学院 | Car heating and ventilation monomer vibration noise testing device |
| CN112196821B (en) * | 2020-09-30 | 2022-07-19 | 江苏徐工工程机械研究院有限公司 | Heat dissipation and noise cooperative matching device, optimization method and system |
| CN113432856A (en) * | 2021-06-28 | 2021-09-24 | 西门子电机(中国)有限公司 | Motor testing method, device, electronic equipment and storage medium |
| CN113945269B (en) * | 2021-09-28 | 2024-06-04 | 国网浙江省电力有限公司电力科学研究院 | Visual detection equipment for vibration noise of transformer |
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| US20090193896A1 (en) * | 2008-01-31 | 2009-08-06 | Lawrence M Rose | Turbocharger rotational speed sensor |
| CN102072144A (en) * | 2011-03-11 | 2011-05-25 | 大连大学 | Vibration and noise online monitoring and fault diagnosis system of scroll compressor |
| CN204301854U (en) * | 2014-11-14 | 2015-04-29 | 中国电器科学研究院有限公司 | A kind of automobile air conditioner compressor noise testing device |
| CN204512858U (en) * | 2014-12-23 | 2015-07-29 | 深圳麦克维尔空调有限公司 | Large-size air conditioning noise subtest tripod |
| CN205620023U (en) * | 2016-04-25 | 2016-10-05 | 吉林大学 | Vehicle air conditioner compressor noise test test bench |
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