CN203981332U - A kind of automotive air-conditioning system pressure test device - Google Patents
A kind of automotive air-conditioning system pressure test device Download PDFInfo
- Publication number
- CN203981332U CN203981332U CN201420347556.3U CN201420347556U CN203981332U CN 203981332 U CN203981332 U CN 203981332U CN 201420347556 U CN201420347556 U CN 201420347556U CN 203981332 U CN203981332 U CN 203981332U
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- pressure
- conditioning system
- temperature sensor
- communicated
- automotive air
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 43
- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 abstract description 5
- 239000003507 refrigerant Substances 0.000 description 13
- 238000001704 evaporation Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 6
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Air-Conditioning For Vehicles (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A kind of automotive air-conditioning system pressure test device, comprise heat interchanger, the first temperature sensor, the second temperature sensor, kapillary, high-pressure connecting pipe road and low-pressure connection tube road, the one end on high-pressure connecting pipe road is communicated with the condensator outlet pipe of automotive air-conditioning system, the other end on high-pressure connecting pipe road is communicated with the entrance of the high temperature fluid passage of described heat interchanger, the one end on low-pressure connection tube road is communicated with the evaporator outlet pipe of automotive air-conditioning system, the other end on low-pressure connection tube road is communicated with the outlet of the cry-fluid passage of described heat interchanger, the entrance of the outlet of the high temperature fluid passage of heat interchanger and the cry-fluid passage of heat interchanger is communicated with by kapillary, the first temperature sensor is arranged on high temperature fluid passage place, described the second temperature sensor is arranged on described exit capillaceous.The utility model, with temperature sensor indirectly testing air-conditioning system pressure, is compared at aspects such as economy, conveniences and is all had outstanding advantage with existing air conditioning pressure proving installation.
Description
Technical field
The utility model relates to a kind of pick-up unit, particularly a kind of automotive air-conditioning system pressure test device.
Background technology
Automotive air-conditioning system need to carry out a large amount of verification experimental verification work when designing and developing, need to gather a large amount of temperature and pressure data, wherein pressure is the leading factor of system change, the ruuning situation of system can judge by system pressure, so the pressure data of air-conditioning system is all most important for technological development, after-sales service personnel.About the collection of system pressure, for air-conditioning system, pressure test is to utilize special-purpose manifold pressure gauge or pressure transducer to realize at present.Manifold pressure gauge belongs to mechanical indicating pointer table, during use, must rely on manual read to fetch data, the precision of test is not high, can not form real-time continuous data collection, the foundation that its data can not be analyzed as system problem is all in most cases after-sales service or use only need understand substantially situation time.Pressure transducer can gather real-time pressure signal continuously, and small volume is easy to install simultaneously, in most automotive air-conditioning system test, obtains a large amount of uses.Because pressure range in automotive air-conditioning system is larger, measuring accuracy is had relatively high expectations, therefore adopts pressure sensor price comparison is expensive, while testing, must use special-purpose pressure signal acquisition module collection simultaneously, when reality is used, need to expend the debugging of going to layout of a large amount of time, when proving ground test, need to additionally carry a large amount of testing apparatuss.
Utility model content
The purpose of this utility model is the drawback for prior art, and a kind of automotive air-conditioning system pressure test device that reduces proving installation cost, simplifies proving installation is provided.
Problem described in the utility model is realized by following technical scheme:
A kind of automotive air-conditioning system pressure test device, comprise heat interchanger, the first temperature sensor, the second temperature sensor, kapillary, high-pressure connecting pipe road and low-pressure connection tube road, the one end on described high-pressure connecting pipe road is communicated with the condensator outlet pipe of automotive air-conditioning system, the other end on described high-pressure connecting pipe road is communicated with the entrance of the high temperature fluid passage of described heat interchanger, the one end on described low-pressure connection tube road is communicated with the evaporator outlet pipe of automotive air-conditioning system, the other end on described low-pressure connection tube road is communicated with the outlet of the cry-fluid passage of described heat interchanger, the entrance of the outlet of the high temperature fluid passage of described heat interchanger and the cry-fluid passage of heat interchanger is communicated with by described kapillary, described the first temperature sensor is arranged on high temperature fluid passage place, described the second temperature sensor is arranged on described exit capillaceous.
Above-mentioned automotive air-conditioning system pressure test device, described high-pressure connecting pipe road is provided with the first charging valve, and described low-pressure connection tube road is provided with the second charging valve.
Above-mentioned automotive air-conditioning system pressure test device, described length capillaceous is 200 millimeters, described capillary diameter is 2 millimeters.
Above-mentioned automotive air-conditioning system pressure test device, is also provided with data acquisition module, and data acquisition module respectively via line is communicated with described the first temperature sensor and described the second temperature sensor.
Above-mentioned automotive air-conditioning system pressure test device, described heat interchanger is plate type heat exchanger.
Existing air-conditioning system pressure test device price is high, the problem of the debugging length consuming time of layouting for solving for the utility model, has designed a kind of automotive air-conditioning system pressure test device of indirect measurement air-conditioning system pressure.Described proving installation adopts brand-new mentality of designing, according to cold-producing medium its pressure when in two-phase state, it is the characteristic of the single-valued function of temperature, adopting temperature sensor is main testing element, measure the temperature data of cold-producing medium when two-phase state, be converted to again pressure data, thereby indirectly measure air-conditioning system pressure.Temperature sensor technology maturation, measuring accuracy is high, and test reaction speed is fast, simultaneously cheap, the utility model adopts temperature sensor indirectly testing air-conditioning system pressure, compares at aspects such as practicality, economy, conveniences and all has outstanding advantage with existing air conditioning pressure proving installation.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is schematic diagram of the present utility model;
Fig. 2 is schematic diagram of the present utility model.
In figure, each list of reference numerals is: 1, evaporator, 2, expansion valve, 3, condenser, 4, compressor, the 5, first charging valve, 6, heat interchanger, 6-1, high temperature fluid passage, 6-2, cry-fluid passage, the 7, first temperature sensor, 8, kapillary, 9, the second temperature sensor, the 10, second charging valve, 11, data acquisition module, 12, high-pressure connecting pipe road, 13, low-pressure connection tube road.
Embodiment
Referring to Fig. 1, Fig. 2, automotive air-conditioning system comprises the loop consisting of evaporator 1, condenser 3, compressor 4, expansion valve 2.Automotive air-conditioning system pressure test device described in the utility model comprises heat interchanger 6, the first temperature sensor 7, the second temperature sensor 9, kapillary 8, high-pressure connecting pipe road 12 and low-pressure connection tube road 13.Wherein, the one end on high-pressure connecting pipe road 12 is connected with the condensator outlet pipe of air-conditioning system, and the other end on high-pressure connecting pipe road is communicated with the entrance of the high temperature fluid passage 6-1 of heat interchanger; The one end on low-pressure connection tube road is communicated with the evaporator outlet pipe of air-conditioning system, and the other end on low-pressure connection tube road is communicated with the outlet of the cry-fluid passage 6-2 of heat interchanger.The outlet of the high temperature fluid passage of heat interchanger and the entrance of cry-fluid passage are communicated with by kapillary 8.The first temperature sensor is arranged on high temperature fluid passage place, and the second temperature sensor is arranged on exit capillaceous.The first temperature sensor, the second temperature sensor via line are connected with data acquisition module 11.For regulating the fluid flow of controlling by high-pressure connecting pipe road, low-pressure connection tube road, on high-pressure connecting pipe road, be provided with the first charging valve 5, low-pressure connection tube road is provided with the second charging valve 10.Heat interchanger adopts plate type heat exchanger.
Described kapillary 8 is the copper pipes that caliber is tiny, because its tiny caliber can produce enough large resistance to flow, while making cold-producing medium pass through kapillary, produce the effect of reducing pressure by regulating flow, after making high-pressure refrigerant by kapillary, become low pressure refrigerant, to there is Evaporation Phenomenon at normal temperatures in low pressure refrigerant, make to be condensed into liquid cold-producing medium before kapillary and change into gaseous refrigerant.For automotive air-conditioning system, through theoretical calculating and verification experimental verification, determine, caliber capillaceous adopts the copper pipe that Φ 2, total length are 200mm, can make cold-producing medium generation Evaporation Phenomenon, make cold-producing medium occur two-phase state, also can not produce excessive vaporization, so that make to occur after kapillary the state of superheated vapor simultaneously.
The temperature signal that the first temperature sensor and the second temperature sensor record be one about the analog quantity parameter of electric current, by data acquisition module, temperature signal is stored and converted to digital signal and be transported to the end-equipments such as computer temperature is shown, for follow-up computation process.
Test philosophy of the present utility model is as follows: cold-producing medium in order to reach refrigeration, need to have condensation and evaporation two states in air-conditioning system.During evaporation, airborne heat in car is sucked to air-conditioning system, during condensation by the thermal release in system in air, thereby realized refrigeration.Physical characteristics from cold-producing medium, cold-producing medium is when in two-phase state, the residing environmental pressure of cold-producing medium is the single-valued function of temperature, after recording refrigerant temperature while being two-phase state, just can system pressure be found out according to definite correspondence graph, or calculate according to refrigerant property computing formula.Temperature is now called saturation temperature, and its pressure is called saturation pressure.The utility model respectively at cold-producing medium in condensation and when evaporation, change cold-producing medium into two-phase state, by measuring the temperature of cold-producing medium, just can realize the indirect measurement to pressure like this.
Still, referring to Fig. 1, Fig. 2, test process of the present utility model is as follows: first, second charging valve is connected with pressure duct, the low pressure line of real vehicle air-conditioning system; Open first, second simultaneously and press charging valve, adjust refrigerant flow and make a small amount of cold-producing medium enter part of detecting.The cold-producing medium being communicated with high-pressure section condenser 3 enters heat interchanger 6, and from kapillary 8 low-temperature refrigerant contact heat-exchanging out, makes it produce condensation, and now cold-producing medium, in two-phase state, utilizes the first temperature sensor 7 test condensing temperature T1 now; Condensed liquid refrigerant enters kapillary, under reducing pressure by regulating flow effect capillaceous, refrigerant pressure is reduced, make cold-producing medium produce Evaporation Phenomenon, cold-producing medium is now again in two-phase state, by the second temperature sensor 9, record cold-producing medium evaporating temperature T2 now, low-temperature refrigerant enters heat interchanger and high temperature refrigerant carries out heat interchange subsequently, finally gets back in compressor.The T1 recording, T2 are applied mechanically respectively to refrigerant property table and check in corresponding saturation pressure P1, P2, or utilize correlation computations formula that P1, P2 are calculated.Before kapillary, be partly to communicate with system high pressure, so time pressure P 1 through tabling look-up or calculating be system under test (SUT) high-pressure value; After kapillary, partly communicate with system low-voltage, so time pressure P 2 through tabling look-up or calculating be system under test (SUT) low pressure value; Finally, realized the object of utilizing temperature sensor that automotive air-conditioning system high and low pressure is tested out.
Claims (5)
1. an automotive air-conditioning system pressure test device, it is characterized in that: comprise heat interchanger (6), the first temperature sensor (7), the second temperature sensor (9), kapillary (8), high-pressure connecting pipe road (12) and low-pressure connection tube road (13), the one end on described high-pressure connecting pipe road is communicated with the condensator outlet pipe of automotive air-conditioning system, the other end on described high-pressure connecting pipe road is communicated with the entrance of the high temperature fluid passage (6-1) of described heat interchanger, the one end on described low-pressure connection tube road is communicated with the evaporator outlet pipe of automotive air-conditioning system, the other end on described low-pressure connection tube road is communicated with the outlet of the cry-fluid passage (6-2) of described heat interchanger, the entrance of the outlet of the high temperature fluid passage of described heat interchanger and the cry-fluid passage of heat interchanger is communicated with by described kapillary, described the first temperature sensor is arranged on high temperature fluid passage place, described the second temperature sensor is arranged on described exit capillaceous.
2. automotive air-conditioning system pressure test device according to claim 1, is characterized in that, described high-pressure connecting pipe road is provided with the first charging valve (5), and described low-pressure connection tube road is provided with the second charging valve (10).
3. automotive air-conditioning system pressure test device according to claim 2, is characterized in that, described kapillary (8) length is 200 millimeters, and described capillary diameter is 2 millimeters.
4. automotive air-conditioning system pressure test device according to claim 3, is characterized in that, is also provided with data acquisition module (11), and data acquisition module respectively via line is communicated with described the first temperature sensor, described the second temperature sensor.
5. automotive air-conditioning system pressure test device according to claim 4, is characterized in that, described heat interchanger is plate type heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420347556.3U CN203981332U (en) | 2014-06-27 | 2014-06-27 | A kind of automotive air-conditioning system pressure test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420347556.3U CN203981332U (en) | 2014-06-27 | 2014-06-27 | A kind of automotive air-conditioning system pressure test device |
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| Publication Number | Publication Date |
|---|---|
| CN203981332U true CN203981332U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420347556.3U Expired - Fee Related CN203981332U (en) | 2014-06-27 | 2014-06-27 | A kind of automotive air-conditioning system pressure test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406045A (en) * | 2018-09-27 | 2019-03-01 | 浙江众泰汽车制造有限公司 | Automotive air-conditioning system pressure test device and automotive air-conditioning system method for testing pressure |
| CN109520762A (en) * | 2018-12-04 | 2019-03-26 | 苏州恒融自动化科技有限公司 | Detection of air-conditioning system |
| CN109724745A (en) * | 2017-10-31 | 2019-05-07 | 上汽通用汽车有限公司 | Car air conditioner refrigerant testing auxiliary device |
-
2014
- 2014-06-27 CN CN201420347556.3U patent/CN203981332U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724745A (en) * | 2017-10-31 | 2019-05-07 | 上汽通用汽车有限公司 | Car air conditioner refrigerant testing auxiliary device |
| CN109406045A (en) * | 2018-09-27 | 2019-03-01 | 浙江众泰汽车制造有限公司 | Automotive air-conditioning system pressure test device and automotive air-conditioning system method for testing pressure |
| CN109520762A (en) * | 2018-12-04 | 2019-03-26 | 苏州恒融自动化科技有限公司 | Detection of air-conditioning system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 |
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| CF01 | Termination of patent right due to non-payment of annual fee |