CN103033356A - Testing system and testing method of performance of coaxial heat exchanger in automobile air conditioner - Google Patents

Testing system and testing method of performance of coaxial heat exchanger in automobile air conditioner Download PDF

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Publication number
CN103033356A
CN103033356A CN2012105856673A CN201210585667A CN103033356A CN 103033356 A CN103033356 A CN 103033356A CN 2012105856673 A CN2012105856673 A CN 2012105856673A CN 201210585667 A CN201210585667 A CN 201210585667A CN 103033356 A CN103033356 A CN 103033356A
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heat exchanger
coaxial heat
voltage tube
low
entrance
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CN103033356B (en
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沈宇纲
邵渊
周建
孙靖瑜
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ON SATAKE HOT AND COLD CONTROL TECHNOLOGY Co Ltd
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ON SATAKE HOT AND COLD CONTROL TECHNOLOGY Co Ltd
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Abstract

The invention discloses a testing system of performance of a coaxial heat exchanger in an automobile air conditioner. The testing system comprises a compressor, a condenser, a liquid storage tank, a subcooler, a flowmeter, a regulating valve, a calorimeter, a high-pressure pipe temperature and pressure measuring point, and a low-pressure pipe temperature and pressure measuring point, wherein the compressor, the condenser, the liquid storage tank, the subcooler, the flowmeter, the regulating valve and the calorimeter are connected in series sequentially to form a loop, a high pressure pipe inlet of the coaxial heat exchanger is connected with an outlet of the subcooler, a high pressure pipe outlet of the coaxial heat exchanger is connected with an inlet of the flowmeter, a low pressure pipe inlet of the coaxial heat exchanger is connected with an outlet of the calorimeter, and a low pressure pipe outlet of the coaxial heat exchanger is connected with an inlet of the compressor. The invention further provides a testing method of the testing system. By means of the testing system and the testing method of the performance of the coaxial heat exchanger in the automobile air conditioner, work states of the components in the testing system are controlled, and therefore whether the performance of the coaxial heat exchanger meets requirements can be monitored accurately.

Description

The Performance Test System of coaxial heat exchanger and method of testing in the air conditioning for automobiles
Technical field
The present invention relates to a kind of performance testing device, specifically belong to a kind of device of testing the performance of coaxial heat exchanger and supporting high-pressure air pipe, high-pressure liquid tube and low pressure gas pipe, be particularly useful for automobile air conditioning refrigerating system.
Background technology
In automobile air conditioning refrigerating system, what mostly use is coaxial heat exchanger, and this coaxial heat exchanger is comprised of concentric inner tube and outer tube, and cold fluid and hot fluid flows in inner tube and outer tube annular space respectively and conducts heat.Because refrigeration system is subject to the impact of the factors such as temperature fluctuation, start and stop circulation, heat pump to melt frost in actual motion, so its internal pressure is in frequent alternately lower, so in order to satisfy the test request to the coaxial sleeve tube internal exchanger (IHX) that uses in the air-conditioning system, be badly in need of at present simple and reliable proving installation this type of heat interchanger carried out performance test.
Summary of the invention
The technical problem to be solved in the present invention provides Performance Test System and the method for testing of coaxial heat exchanger in a kind of air conditioning for automobiles, can control exactly test condition and monitor the performance parameter of coaxial heat exchanger to be measured.
For solving the problems of the technologies described above, the Performance Test System of coaxial heat exchanger in the air conditioning for automobiles of the present invention, comprise compressor, condenser, fluid reservoir, subcooler, flowmeter, variable valve, calorimeter, high-voltage tube temperature and pressure measuring point, low-voltage tube temperature and pressure measuring point, compressor wherein, condenser, fluid reservoir, subcooler, flowmeter, it is a loop that variable valve and calorimeter are connected successively, the high-voltage tube entrance of coaxial heat exchanger links to each other with the outlet of subcooler, the high-voltage tube outlet links to each other with the entrance of flowmeter, the low-voltage tube entrance links to each other with the outlet of calorimeter, and the low-voltage tube outlet links to each other with the entrance of compressor.
Wherein, described high-voltage tube temperature and pressure measuring point is between the high-voltage tube entrance of the outlet of subcooler and coaxial heat exchanger, and low-voltage tube temperature and pressure measuring point is between the low-voltage tube entrance of the outlet of calorimeter and coaxial heat exchanger.
Further, described test macro also comprises refrigeration cycle unit, cooling water circulation unit and environmental cabinet, wherein the refrigeration cycle unit comprises cooling coil and well heater, described cooling coil, well heater and coaxial heat exchanger are positioned at environmental cabinet, and the control environment temperature of case of cooling coil and well heater, described cooling water circulation unit is used for regulating the duty of condenser and subcooler, and it comprises Water Tank with Temp.-controlled, water pump and variable valve.
Preferably, the compressor of described test macro is one or in parallel a plurality of.
Perhaps, the compressor of described test macro links to each other with the entrance of a superheater, the outlet of superheater links to each other with the entrance of a high-pressure air pipe, the outlet of high-pressure air pipe links to each other with the entrance of condenser, the high-pressure liquid tube of connecting between the high-voltage tube entrance of the outlet of described subcooler and coaxial heat exchanger, the low pressure gas pipe of connecting between the low-voltage tube entrance of the outlet of described calorimeter and coaxial heat exchanger, the entrance and exit of the high-voltage tube of described coaxial heat exchanger and low-voltage tube, high-pressure air pipe, high-pressure liquid tube, low pressure gas pipe is equipped with the valve of a valve and a bypass all in parallel.
Further, the entrance and exit of the high-voltage tube of the described coaxial heat exchanger valve of connecting respectively, in parallel with a valve again; The entrance and exit of the low-voltage tube of the described coaxial heat exchanger valve of connecting respectively, in parallel with a valve again; The valve of connecting between the valve of connecting between described high-pressure air pipe and the superheater, high-pressure air pipe and condenser, a valve in parallel between the entrance of superheater and the entrance of condenser; The entrance and exit of the described high-pressure liquid tube valve of connecting respectively, in parallel with a valve again; The entrance and exit of the described low pressure gas pipe valve of connecting respectively, in parallel with a valve again.
Further, the low-voltage tube of the high-voltage tube of compressor, condenser, fluid reservoir, subcooler, coaxial heat exchanger, flowmeter, variable valve, calorimeter and coaxial heat exchanger forms the test loop of coaxial heat exchanger, wherein high-voltage tube temperature and pressure measuring point is arranged between the high-voltage tube entrance of the outlet of high-pressure liquid tube and coaxial heat exchanger, and low-voltage tube temperature and pressure measuring point is arranged between the low-voltage tube entrance of the outlet of low pressure gas pipe and coaxial heat exchanger.
Further, compressor, superheater, high-pressure air pipe, condenser, fluid reservoir, subcooler, flowmeter, variable valve and calorimeter form the test loop of high-pressure air pipe, and wherein high-voltage tube temperature and pressure measuring point is arranged between the entrance of the outlet of superheater and high-pressure air pipe.
Further, compressor, condenser, fluid reservoir, subcooler, high-pressure liquid tube, flowmeter, variable valve and calorimeter form the test loop of high-pressure liquid tube, and wherein high-voltage tube temperature and pressure measuring point is arranged between the entrance of the outlet of subcooler and high-pressure liquid tube.
Further, compressor, condenser, fluid reservoir, subcooler, flowmeter, variable valve, calorimeter and low pressure gas pipe form the test loop of low pressure gas pipe, and wherein low-voltage tube temperature and pressure measuring point is arranged between the entrance of the outlet of calorimeter and low pressure gas pipe.
The present invention also provides the method for testing of the Performance Test System of coaxial heat exchanger in the described air conditioning for automobiles, comprising:
1) formation arranges high-voltage tube temperature and pressure measuring point and low-voltage tube temperature and pressure measuring point as required for the test loop of testing sample;
2) open compressor, cold-producing medium is flowed in test loop;
Wherein, in step 2) in, control is regulated in the combination of one or more in the power input of the power input of the aperture of the cooling water inflow of the cooling water inflow of condenser, subcooler, variable valve, calorimeter, superheater, made the temperature and pressure of the cold-producing medium of testing sample import satisfy test condition; And, the flow through refrigerant flow of testing sample of the rotating speed by compressor or frequency control.
Beneficial effect of the present invention is:
1. by controlling the duty of each parts in the test macro, the temperature of the high-voltage tube of coaxial heat exchanger to be measured and low-voltage tube porch and pressure and the flow by the coaxial heat exchanger high-voltage tube are remained under the test condition, thereby whether the performance of monitor coaxial heat exchanger meet the demands;
2. this system can be by the setting of valve and the evolution of switching and measuring point, expand its test condition and tested object, on the basis that does not increase hardware cost, change as required the trend of pipeline, realize the function of testing automobile air-conditioning refrigeration system mesohigh tracheae, high-pressure liquid tube and low pressure gas pipe resistance.
Description of drawings
Fig. 1 is a kind of structural representation of refrigeration cycle unit in the Performance Test System of coaxial heat exchanger of the present invention;
Fig. 2 is the another kind of structural representation of refrigeration cycle unit in the Performance Test System of coaxial heat exchanger of the present invention;
Fig. 3 is the structural representation that the refrigeration cycle unit is used for testing high voltage tracheae performance among Fig. 2;
Fig. 4 is the structural representation that the refrigeration cycle unit is used for testing high voltage liquid pipe performance among Fig. 2;
Fig. 5 is the structural representation that the refrigeration cycle unit is used for test low pressure gas pipe performance among Fig. 2.
Wherein description of reference numerals is as follows:
1 compressor, 2 condensers
3 fluid reservoirs, 4 subcoolers
5 coaxial heat exchangers, 6 flowmeters
7 variable valve, 8 calorimeters
10 low-voltage tube temperature and pressure measuring points, 11 high-voltage tube temperature and pressure measuring points
12 second compressors, 13 high-pressure air pipes
14 high-pressure liquid tubes, 15 low pressure gas pipes
16 superheater F1-F15 valves
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing and embodiment.
The first embodiment of the Performance Test System of coaxial heat exchanger in the air conditioning for automobiles provided by the invention, as shown in Figure 1, comprise that series connection is compressor 1, condenser 2, fluid reservoir 3, subcooler 4, flowmeter 6, variable valve 7 and the calorimeter 8 in a loop successively, the high-voltage tube entrance of coaxial heat exchanger 5 links to each other with the outlet of subcooler 4, the high-voltage tube outlet links to each other with the entrance of flowmeter 6, the low-voltage tube entrance links to each other with the outlet of calorimeter 8, and the low-voltage tube outlet links to each other with the entrance of compressor 1.High-voltage tube temperature and pressure measuring point 11 is between the high-voltage tube entrance of the outlet of subcooler 4 and coaxial heat exchanger 5, and low-voltage tube temperature and pressure measuring point 10 is between the low-voltage tube entrance of the outlet of calorimeter 8 and coaxial heat exchanger 5.
Better, test macro also comprises refrigeration cycle unit, cooling water circulation unit and environmental cabinet, wherein the refrigeration cycle unit comprises cooling coil and well heater, described cooling coil, well heater and coaxial heat exchanger 5 are positioned at environmental cabinet, and cooling coil and well heater control environment the temperature of case to satisfy the requirement of 5 pairs of test environments of coaxial heat exchanger to be measured.Described cooling water circulation unit comprises Water Tank with Temp.-controlled, water pump and variable valve, is used for regulating the duty of condenser 2 and subcooler 4, thereby indirectly controls temperature and the pressure of coaxial heat exchanger to be measured 5 high-voltage tube porch.In the present embodiment, compressor 1 is a variable speed compressor or frequency-changeable compressor, and condenser 2 and subcooler 4 are double-pipe exchangers, and calorimeter 8 is second refrigerant calorimeters (seeing GB-T5773-2004), and variable valve 7 is electric expansion valves.
When coaxial heat exchanger 5 is carried out performance test, low-temperature low-pressure refrigerant enters from the air intake opening of compressor 1, enter condenser 2 after compressed machine 1 compression and carry out condensation, the condensed cold-producing medium reservoir 3 of flowing through enters subcooler 4 cooling, cooled cold-producing medium enters variable valve 7 through the high-voltage tube of coaxial heat exchanger 5, in variable valve 7, enter calorimeter 8 behind the reducing pressure by regulating flow, get back to compressor 1 air intake opening finally by the low-voltage tube of coaxial heat exchanger 5.In test process, regulate the inlet refrigerant pressure of cooling water inflow control coaxial heat exchanger 5 high-voltage tubes of the condenser 2 of flowing through by the cooling water circulation unit, regulate the inlet refrigerant temperature of cooling water inflow control coaxial heat exchanger 5 high-voltage tubes of subcooler 4 by the cooling water circulation unit, change the inlet refrigerant pressure of aperture control coaxial heat exchanger 5 low-voltage tubes of variable valve 7, change the inlet refrigerant temperature of power input control coaxial heat exchanger 5 low-voltage tubes of calorimeter 8, coaxial heat exchanger 5 is under the required condition of test, simultaneously by the rotating speed that changes compressor 1 or the refrigerant flow that frequency is controlled the coaxial heat exchanger 5 of flowing through.
In addition, the invention provides the second embodiment of the Performance Test System of coaxial heat exchanger in the air conditioning for automobiles, as shown in Figure 2, this embodiment has carried out the expansion of tested object and test condition on the basis of the first embodiment, wherein the cooling water circulation unit is identical with the first embodiment with environmental cabinet, so repeat no more.Different from the first embodiment is, the refrigeration cycle unit comprises compressor (adopting in the present embodiment the compressor 1,12 of two parallel connections), condenser 2, fluid reservoir 3, subcooler 4, flowmeter 6, variable valve 7, calorimeter 8, the superheater 16 of one or more parallel connections, and testing sample comprises coaxial heat exchanger 5, high-pressure air pipe 13, high-pressure liquid tube 14 and low pressure gas pipe 15.As shown in Figure 2, (the first) compressor 1 and 12 parallel connections of the second compressor, compressor outlet after the parallel connection is connected with the entrance of superheater 16, the outlet of superheater 16 is connected with the entrance of high-pressure air pipe 13, the outlet of high-pressure air pipe 13 is connected with the entrance of condenser 2, the outlet of condenser 2 is connected with the entrance of fluid reservoir 3, the outlet of fluid reservoir 3 is connected with the entrance of subcooler 4, the outlet of subcooler 4 is connected with the entrance of high-pressure liquid tube 14, the outlet of high-pressure liquid tube 14 is connected with the high-voltage tube entrance of coaxial heat exchanger 5, the high-voltage tube outlet of coaxial heat exchanger 5 is connected with the entrance of flowmeter 6, the outlet of flowmeter 6 is connected with the entrance of variable valve 7, the outlet of variable valve 7 is connected with the entrance of calorimeter 8, the outlet of calorimeter 8 is connected with the entrance of low pressure gas pipe 15, the outlet of low pressure gas pipe 15 is connected with the low-voltage tube entrance of coaxial heat exchanger 5, and the low-voltage tube outlet of coaxial heat exchanger 5 is connected with suction port of compressor in parallel.
Simultaneously, the entrance of the high-voltage tube of coaxial heat exchanger 5 arranges valve F8, outlet arranges valve F9, a valve F7 in parallel again after valve F8, high-voltage tube and the valve F9 series connection, the entrance of the low-voltage tube of coaxial heat exchanger 5 arranges valve F11, outlet arranges valve F12, a valve F10 in parallel again after valve F11, low-voltage tube and the valve F12 series connection.The valve F3 that connects between the valve F2 that connects between high-pressure air pipe 13 and the superheater 16, high-pressure air pipe 13 and condenser 2, a valve F1 in parallel between the entrance of the entrance of superheater 16 and condenser 2.The entrance of high-pressure liquid tube 14 arranges valve F5, and outlet arranges valve F6, a valve F4 in parallel again after valve F5, high-pressure liquid tube 14 and the valve F6 series connection.The entrance of low pressure gas pipe 15 arranges valve F15, and outlet arranges valve F14, a valve F13 in parallel again after valve F15, low pressure gas pipe 15 and the valve F14 series connection.
When coaxial heat exchanger 5 is tested object, as shown in Figure 2, high-voltage tube temperature and pressure measuring point 11 is arranged between the high-voltage tube entrance of the outlet of high-pressure liquid tube 14 and coaxial heat exchanger 5, low-voltage tube temperature and pressure measuring point 10 is arranged between the low-voltage tube entrance of the outlet of low pressure gas pipe 15 and coaxial heat exchanger 5, and open valve F1, valve F4, valve F8, valve F9, valve F13, valve F11, valve F12, valve-off F2, valve F3, valve F5, valve F6, valve F7, valve F10, valve F14, valve F15 forms by compressor 1 and 12, condenser 2, fluid reservoir 3, subcooler 4, the high-voltage tube of coaxial heat exchanger 5, flowmeter 6, variable valve 7, the test loop that the low-voltage tube of calorimeter 8 and coaxial heat exchanger 5 forms.
When carrying out performance test, low-temperature low-pressure refrigerant enters from the air intake opening of compressor 1, being entered condenser 2 behind the valve F1 that flows through after compressor 1 compression carries out condensation, and the cooling water inflow that changes the condenser 2 of flowing through by the cooling water circulation unit is controlled the refrigerant pressure of coaxial heat exchanger 5 high-voltage tube imports.Flowing through subsequently by condensed cold-producing medium enters subcooler 4 coolings behind the reservoir 3, and controls the refrigerant temperature of coaxial heat exchanger 5 high-voltage tube imports by the cooling water inflow that the cooling water circulation unit changes subcooler 4.Cold-producing medium is flowed through and is entered variable valve 7 behind valve F4, F8, coaxial heat exchanger 5 high-voltage tubes and the valve F9 and carry out reducing pressure by regulating flow subsequently, the refrigerant pressure of the aperture control coaxial heat exchanger 5 low-voltage tube imports by changing variable valve 7.Cold-producing medium enters calorimeter 8 and carries out evaporation endothermic subsequently, controls the refrigerant temperature of coaxial heat exchanger 5 low-voltage tube imports by the power input that changes calorimeter 8.Cold-producing medium is flowed through and is got back to compressor 1 import behind valve F13, valve F11, coaxial heat exchanger 5 low-voltage tubes and the valve F12 subsequently.By the rotating speed that changes compressor 1 or the refrigerant flow that frequency is controlled the coaxial heat exchanger 5 of flowing through.
When high-pressure air pipe 13 is tested object, as shown in Figure 3, high-voltage tube temperature and pressure measuring point 11 is arranged between superheater 16 outlets and high-pressure air pipe 13 entrances, and open valve F2, valve F3, valve F4, valve F7, valve F13, valve F10, valve-off F1, valve F5, valve F6, valve F8, valve F9, valve F11, valve F12, valve F14, valve F15 form the test loop that is comprised of compressor 1 and 12, superheater 16, high-pressure air pipe 13, condenser 2, fluid reservoir 3, subcooler 4, flowmeter 6, variable valve 7 and calorimeter 8.
When high-pressure air pipe 13 was carried out performance test, low-temperature low-pressure refrigerant entered from the air intake opening of compressor 1, was entered superheater 16 heating after compressor 1 compression, controlled the refrigerant temperature of high-pressure air pipe 13 imports by the power input that changes superheater 16.Cold-producing medium is flowed through and is entered condenser 2 behind valve F2, high-pressure air pipe 13 and the valve F3 and carry out condensation subsequently, and the cooling water inflow that changes the condenser 2 of flowing through by the cooling water circulation unit is controlled the refrigerant pressure of high-pressure air pipe 13 imports.Flowing through subsequently by condensed cold-producing medium enters subcooler 4 coolings behind the reservoir 3, and the cooling water inflow that changes subcooler 4 by the cooling water circulation unit comes the refrigerant temperature of regulating and controlling valve 7 imports.Cold-producing medium is flowed through and is entered variable valve 7 behind valve F4 and the F7 and carry out reducing pressure by regulating flow subsequently, the refrigerant pressure of aperture control calorimeter 8 outlets by changing variable valve 7.Cold-producing medium enters calorimeter 8 and carries out evaporation endothermic subsequently, controls the refrigerant temperature of calorimeter 8 outlets by the power input that changes calorimeter 8.Flow through valve F13 and F10 of cold-producing medium gets back to compressor 1 and compressor 12 imports subsequently.The refrigerant flow that rotating speed by changing compressor 1 and 12 or frequency are controlled the high-pressure air pipe 13 of flowing through.
When high-pressure liquid tube 14 is tested object, as shown in Figure 4, high-voltage tube temperature and pressure measuring point 11 is arranged between the entrance of the outlet of subcooler 4 and high-pressure liquid tube 14, and open valve F1, valve F5, valve F6, valve F7, valve F13, valve F10, valve-off F2, valve F3, valve F4, valve F8, valve F9, valve F11, valve F12, valve F14, valve F15 form the test loop that is comprised of compressor 1 and 12, condenser 2, fluid reservoir 3, subcooler 4, high-pressure liquid tube 14, flowmeter 6, variable valve 7 and calorimeter 8.
When high-pressure liquid tube 14 is carried out performance test, low-temperature low-pressure refrigerant enters from the air intake opening of compressor 1, being entered condenser 2 behind the valve F1 that flows through after compressor 1 compression carries out condensation, and the cooling water inflow that changes the condenser 2 of flowing through by the cooling water circulation unit is controlled the refrigerant pressure of high-pressure liquid tube 14 imports.Flowing through subsequently by condensed cold-producing medium enters subcooler 4 coolings behind the reservoir 3, and the cooling water inflow that changes subcooler 4 by the cooling water circulation unit is controlled the refrigerant temperature of high-pressure liquid tube 14 imports.Cold-producing medium is flowed through and is entered variable valve 7 behind valve F5, high-pressure liquid tube 14, valve F6 and the valve F7 and carry out reducing pressure by regulating flow subsequently, the refrigerant pressure of aperture control calorimeter 8 outlets by changing variable valve 7.Cold-producing medium enters calorimeter 8 and carries out evaporation endothermic subsequently, and controls the refrigerant temperature of calorimeter 8 outlets by the power input that changes calorimeter 8.Flow through valve F13 and F10 of cold-producing medium gets back to compressor 1 and compressor 12 imports subsequently.The refrigerant flow that rotating speed by changing compressor 1 and 12 or frequency are controlled the high-pressure liquid tube 14 of flowing through.
When low pressure gas pipe 15 is tested object, as shown in Figure 5, low-voltage tube temperature and pressure measuring point 10 is connected between the entrance of the outlet of calorimeter 8 and low pressure gas pipe 15, and open valve F1, valve F4, valve F7, valve F15, valve F14, valve F10, valve-off F2, valve F3, valve F5, valve F6, valve F8, valve F9, valve F11, valve F12, valve F13 form the test loop that is comprised of compressor 1 and 12, condenser 2, fluid reservoir 3, subcooler 4, flowmeter 6, variable valve 7, calorimeter 8 and low pressure gas pipe 15.
When low pressure gas pipe 15 is carried out performance test, low-temperature low-pressure refrigerant enters from the air intake opening of compressor 1, being entered condenser 2 behind the valve F1 that flows through after compressor 1 compression carries out condensation, and the cooling water inflow that changes the condenser 2 of flowing through by the cooling water circulation unit comes the refrigerant pressure of regulating and controlling valve 7 imports.Flowing through subsequently by condensed cold-producing medium enters subcooler 4 coolings behind the reservoir 3, and the cooling water inflow that changes subcooler 4 by the cooling water circulation unit comes the refrigerant temperature of regulating and controlling valve 7 imports.Cold-producing medium is flowed through and is entered variable valve 7 behind valve F4 and the valve F7 and carry out reducing pressure by regulating flow subsequently, the refrigerant pressure of aperture control low pressure gas pipe 15 imports by changing variable valve 7.Cold-producing medium enters calorimeter 8 and carries out evaporation endothermic subsequently, controls the refrigerant temperature of low pressure gas pipe 15 imports by the power input that changes calorimeter 8.Flow through valve F15, low pressure gas pipe 15, valve F14 and F10 of cold-producing medium gets back to compressor 1 and compressor 12 imports subsequently.The refrigerant flow that rotating speed by changing compressor 1 and 12 or frequency are controlled the low pressure gas pipe 15 of flowing through.
The present invention is by the duty of each parts in the control test macro, the high-voltage tube of coaxial heat exchanger to be measured and temperature and the pressure of low-voltage tube porch are remained under the test condition, thereby whether the performance of monitor coaxial heat exchanger meet the demands.In addition, the present invention can also be by setting and switching, the evolution of measuring point and the increase of compressor of valve, do not affect measuring accuracy and do not increasing its test condition of expansion and tested object under the prerequisite of hardware cost, as long as change as required the trend of pipeline, just can realize the function of testing automobile air-conditioning refrigeration system mesohigh tracheae, high-pressure liquid tube and low pressure gas pipe resistance.
More than by specific embodiment the present invention is had been described in detail, this embodiment only is preferred embodiment of the present invention, it is not to limit the invention.In the situation that does not break away from the principle of the invention, equivalent replacement and improvement that those skilled in the art makes the setting of assembly in the test macro, the position setting of valve and the position selection of measuring point etc. all should be considered as in the technology category that the present invention protects.

Claims (10)

1. the Performance Test System of coaxial heat exchanger in the air conditioning for automobiles, it is characterized in that, comprise compressor (1), condenser (2), fluid reservoir (3), subcooler (4), flowmeter (6), variable valve (7), calorimeter (8), high-voltage tube temperature and pressure measuring point (11), low-voltage tube temperature and pressure measuring point (10), compressor (1) wherein, condenser (2), fluid reservoir (3), subcooler (4), flowmeter (6), it is a loop that variable valve (7) and calorimeter (8) are connected successively, the high-voltage tube entrance of coaxial heat exchanger (5) links to each other with the outlet of subcooler (4), the high-voltage tube outlet links to each other with the entrance of flowmeter (6), the low-voltage tube entrance links to each other with the outlet of calorimeter (8), and the low-voltage tube outlet links to each other with the entrance of compressor (1).
2. the Performance Test System of coaxial heat exchanger in the air conditioning for automobiles according to claim 1, it is characterized in that, described high-voltage tube temperature and pressure measuring point (11) is positioned between the high-voltage tube entrance of the outlet of subcooler (4) and coaxial heat exchanger (5), and low-voltage tube temperature and pressure measuring point (10) is positioned between the low-voltage tube entrance of the outlet of calorimeter (8) and coaxial heat exchanger (5).
3. the Performance Test System of coaxial heat exchanger in the air conditioning for automobiles according to claim 1, it is characterized in that, described test macro also comprises refrigeration cycle unit, cooling water circulation unit and environmental cabinet, wherein the refrigeration cycle unit comprises cooling coil and well heater, described cooling coil, well heater and coaxial heat exchanger (5) are positioned at environmental cabinet, and the control environment temperature of case of cooling coil and well heater, described cooling water circulation unit is used for regulating the duty of condenser (2) and subcooler (4), and it comprises Water Tank with Temp.-controlled, water pump and variable valve.
4. the Performance Test System of coaxial heat exchanger in the air conditioning for automobiles according to claim 1 is characterized in that, the compressor of described test macro (1) is one or in parallel a plurality of.
5. the Performance Test System of coaxial heat exchanger in the air conditioning for automobiles according to claim 1, it is characterized in that, the compressor of described test macro links to each other with the entrance of a superheater (16), the outlet of superheater (16) links to each other with the entrance of a high-pressure air pipe (13), the outlet of high-pressure air pipe (13) links to each other with the entrance of condenser (2), the high-pressure liquid tube (14) of connecting between the high-voltage tube entrance of the outlet of described subcooler (4) and coaxial heat exchanger (5), the low pressure gas pipe (15) of connecting between the low-voltage tube entrance of the outlet of described calorimeter (8) and coaxial heat exchanger (5), high-voltage tube and the low-voltage tube of described coaxial heat exchanger (5), high-pressure air pipe (13), high-pressure liquid tube (14), the entrance and exit of low pressure gas pipe (15) is equipped with the valve of a valve and a bypass all in parallel.
6. the Performance Test System of coaxial heat exchanger in the air conditioning for automobiles according to claim 5, it is characterized in that, compressor in parallel, condenser (2), fluid reservoir (3), subcooler (4), the high-voltage tube of coaxial heat exchanger (5), flowmeter (6), variable valve (7), the low-voltage tube of calorimeter (8) and coaxial heat exchanger (5) forms the test loop of coaxial heat exchanger (5), wherein high-voltage tube temperature and pressure measuring point (11) is arranged between the high-voltage tube entrance of the outlet of high-pressure liquid tube (14) and coaxial heat exchanger (5), and low-voltage tube temperature and pressure measuring point (10) is arranged between the low-voltage tube entrance of the outlet of low pressure gas pipe (15) and coaxial heat exchanger (5).
7. the Performance Test System of coaxial heat exchanger in the air conditioning for automobiles according to claim 5, it is characterized in that, compressor, superheater (16), high-pressure air pipe (13), condenser (2), fluid reservoir (3), subcooler (4), flowmeter (6), variable valve (7) and calorimeter (8) form the test loop of high-pressure air pipe (13), and wherein high-voltage tube temperature and pressure measuring point (11) is arranged between the entrance of the outlet of superheater (16) and high-pressure air pipe (13).
8. the Performance Test System of coaxial heat exchanger in the air conditioning for automobiles according to claim 5, it is characterized in that, compressor, condenser (2), fluid reservoir (3), subcooler (4), high-pressure liquid tube (14), flowmeter (6), variable valve (7) and calorimeter (8) form the test loop of high-pressure liquid tube (14), and wherein high-voltage tube temperature and pressure measuring point (11) is arranged between the entrance of the outlet of subcooler (4) and high-pressure liquid tube (14).
9. the Performance Test System of coaxial heat exchanger in the air conditioning for automobiles according to claim 5, it is characterized in that, compressor, condenser (2), fluid reservoir (3), subcooler (4), flowmeter (6), variable valve (7), calorimeter (8) and low pressure gas pipe (15) form the test loop of low pressure gas pipe (15), and wherein low-voltage tube temperature and pressure measuring point (10) is arranged between the entrance of the outlet of calorimeter (8) and low pressure gas pipe (15).
10. such as the method for testing of the Performance Test System of coaxial heat exchanger in the described air conditioning for automobiles of any one in the claim 1 to 9, it is characterized in that, comprising:
1) formation arranges high-voltage tube temperature and pressure measuring point (11) and low-voltage tube temperature and pressure measuring point (10) as required for the test loop of testing sample;
2) open compressor (1), cold-producing medium is flowed in test loop;
Wherein, in step 2) in, control is regulated in the combination of one or more in the power input of the power input of the aperture of the cooling water inflow of the cooling water inflow of condenser (2), subcooler (4), variable valve (7), calorimeter (8), superheater (16), made the temperature and pressure of the cold-producing medium of testing sample import satisfy test condition; And, the flow through refrigerant flow of testing sample of the rotating speed by compressor (1) or frequency control.
CN201210585667.3A 2012-12-28 2012-12-28 The Performance Test System of coaxial heat exchanger and method of testing in air conditioning for automobiles Active CN103033356B (en)

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CN112649184A (en) * 2020-12-22 2021-04-13 青岛海尔空调电子有限公司 Method and device for testing heat dissipation capacity of radiator and test box

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