CN1296690C - Method of shortening reliability test time of refrigerating and warming air conditioner - Google Patents
Method of shortening reliability test time of refrigerating and warming air conditioner Download PDFInfo
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- CN1296690C CN1296690C CNB011298111A CN01129811A CN1296690C CN 1296690 C CN1296690 C CN 1296690C CN B011298111 A CNB011298111 A CN B011298111A CN 01129811 A CN01129811 A CN 01129811A CN 1296690 C CN1296690 C CN 1296690C
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Abstract
The present invention relates to a method for testing the reliability of an air conditioner. The method for shortening reliability test time of a refrigerating and warming air conditioner is disclosed and comprises the procedures as follows: the temperature control of the air conditioner is arranged at a high-temperature shift, and the air conditioner is in a long-time operating state; an indoor machine of the air conditioner is arranged in a heat preservation box; the air-conditioner continuously operates in a high-temperature environment; operating voltage which is lower then rated working voltage is provided for the air conditioner, the indoor machine and an outdoor machine are arranged in environmental temperature of 24 DEG C to 43 DEG C; after the continuous operation is more than 100 hours, the states of the indoor machine and the outdoor machine are converted into normal operating states, and thus, the test is over. The test method of the present invention accelerates the exposure of potential malfunctions of the air conditioner under severe conditions, raises the operating reliability of the air conditioner and shortens the period of product launch. The method is suitable for testing the reliability of various refrigerating air conditioners and frequency-changing air conditioners.
Description
Technical field
The present invention relates to the air conditioner reliability detection technique, be specifically related to a kind of air conditioner fail-test time method that shortens.
Background technology
In the prior art, how not repair or to repair less in phase designed life of household electronic products is an important parameter that embodies product quality quality and management level height, also is a key factor of following competition between the producer.Producer has only the incipient fault of finding air conditioner by quick, accurate and effective and economic acceleration reliability test method, improves reliability of products, could establish oneself in an unassailable position forever in intense market competition.
At present traditional reliability test method normally by extracting the air conditioner of 30-60 quantity, at normal temperatures, carries out 6 months running test continuously, pinpoints the problems with this.The shortcoming of this method is: it is big to test required place, and electric power and human resources have high input, and the test period is long, and the detectable problem of institute is limited.Because the test period is long, often when fail-test finished, the short product of some market lifes had missed the golden season of selling.Because this test method is simpler, and function and the reliability of some air conditioners under particular service requirement is difficult to verify.
Another shortcoming of carrying out fail-test at normal temperatures is, when environment temperature is higher than 32 ℃, and the fail-test that can not heat.Under lower environment temperature, heat, can not fully verify work long hours reliability under hot environment of indoor set rotatable parts.
Also having a kind of reliability test method is the storehouse body that special foundation can produce hot environment, but, in the body of test storehouse, carry out fail-test, not only build the storehouse body need inject capital into bigger, body power consumption in storehouse own is also big, the test period is identical with first kind of mode, the project of being tested is also limited, the experimentation cost height, in this test method, because of being subjected to the influence of storehouse body size, the air conditioner quantity that can test is very limited.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of method that shortens air conditioner reliability during operation test period in hot environment is provided, when shortening test period, also can make the relevant parts in the air conditioner accelerate to expose its potential fault, the project of fail-test is more wider, can shorten test period, reduce experimentation cost, product can be put on market as early as possible.
Technical scheme provided by the invention is, constructs a kind of method that shortens the air conditioner reliability test period, it is characterized in that, may further comprise the steps:
The adjustment of air conditioner is arranged on the high temperature retaining, and air supply pattern is set to high wind, wind direction swing mode of operation, makes air conditioner be in long-time operating condition;
Indoor machine of air-conditioner is placed in the insulation casing; Make air conditioner can operate continually under the hot environment;
Provide the working voltage that is lower than rated operational voltage to air conditioner, start air conditioner, indoor set is moved under hot environment be no less than 100 hours;
Again with indoor unit and outdoor unit with placing under 24 ℃-43 ℃ the environment temperature, after operation is no less than 100 hours continuously, change normal operating condition over to, finish test.
Above-mentioned according to shortening air conditioner fail-test time method provided by the invention in, described adjustment with air conditioner is arranged on the high temperature retaining, and air conditioner is in the long-time operating condition step, be the temperature of air conditioner to be kept off be arranged on 32 ℃, make the temperature-sensitive control device of indoor set be in open-circuit condition, after making air conditioner start operation, air conditioner can continual long-time heating operation.
In above-mentioned method, it is characterized in that described indoor machine of air-conditioner is placed is incubated in the casing according to shortening air conditioner reliability test period provided by the invention; Air conditioner can be operated continually under the hot environment in the step, be that indoor machine of air-conditioner is placed in the slightly bigger insulation casing of volume ratio indoor set, air conditioner is worked under the environment temperature about 53 ℃, and temperature detecting point is set in the appropriate location of casing.
In above-mentioned method according to shortening air conditioner reliability test period provided by the invention, it is characterized in that, describedly providing in the working voltage step that is lower than rated operational voltage to air conditioner, is to provide the working voltage that is lower than rated operational voltage 15% to air conditioner.
In above-mentioned method according to shortening air conditioner reliability test period provided by the invention, it is characterized in that, described with in the indoor set temperature-sensitive control device open circuit step, be that the temperature-sensitive thermistor in the indoor set is opened a way.
Implement reliability test method provided by the present invention, by taking to reduce operating voltage, the open circuit temperature sensing device makes air conditioner be operated in the medium measure of hot environment, can quicken to expose the incipient fault in the air conditioner, thereby shortens test period; Reduce experimentation cost, compare with traditional test method, have and need not to build low temperature warehouse, the restriction in quantity, place can not be put to the test, advantage such as cost is low, easily carry out, adopt the method for this accelerated test, can significantly shorten test period, reduce the experiment quantity of air conditioner, improve test efficiency, reduce experimentation cost, and, be lower than rated operational voltage when operation, also can make relevant parts in the air conditioner quicken to be exposed to incipient fault under the abominable condition of work, to the raising of cooling and heating air conditioner quality and reliability, played great effect.
Embodiment
By test method provided by the invention, be based on that following principle carries out, find that after deliberation the life-span of air-conditioner refrigerating system and electric component and the relation of temperature meet Arrhenius equation: t=Ae
Δ E/ (KT), A is a constant in the formula, Δ E is the activation energy of disabling mechanism, is the energy of shifting to degenerate state from normal condition, T is a thermodynamic temperature, and K is a Boltzmann constant, from equation as can be known, system temperature and environment temperature are high more, and its serviceable life is short more, but improve the environment temperature accelerated life test; Also have a principle to be, find that after deliberation the life-span of system's event of air conditioner refrigeration and circuit block meets contrary power rate t=1/dpc, d is a constant, and c is the constant relevant with temperature, and p is the parameter relevant with pressure, load and voltage.Under higher system temperature and environment temperature, pressure in compressor and the pipe system is high a lot of during than normal temperature, the load of compressor is also big a lot, simultaneously, for the air conditioner that pressure protect is arranged, also can carry out frequent overvoltage protection test, therefore, under higher system and environment temperature, can carry out accelerated test to the ability that air-conditioner system bears pressure, load;
According to above-mentioned principle, the invention provides following test procedure and shorten test period, at first be with the open circuit of the temperature-sensitive control device in the indoor set (temperature-sensitive thermistor open circuit); Can make air conditioner be in very low temperature (can not testing environment variation of temperature, control system is in air conditioner always and heats duty) starting the detected indoor temperature in operation back so always; And the temperature of air conditioner control gear is arranged on the high temperature retaining, and be generally 32 ℃, make the pattern start continuously operation of air conditioner with " heating "; No matter it is how high that the residing environment temperature of indoor set has, air conditioner can both carry out " heating " operation for a long time, and air supply pattern is set to: the duty of high wind, wind direction swing;
Casing cover with the bigger little indoor set of used for indoor machine volume gets up again, this casing is made with the material of insulation, can make air conditioner when operation, but make the indoor set continuous working under the environment temperature about 53 ℃, can fully test work long hours reliability under hot conditions of each parts of indoor set, also can temperature detecting point be set, to understand indoor set environment temperature height in the appropriate location of casing;
The working voltage that is lower than rated operational voltage is provided to air conditioner; generally be to power to air conditioner by 85% of rated operational voltage; for the air conditioner that adopts 220 volts of rated operational voltages; be equivalent to provide 187 volts working voltage; the purpose of doing like this is; air conditioner is when heating operation; its working current is greater than the working current of refrigerating operaton; after reducing supply voltage; compressor will be kept its output power; just must increase electric current; bigger compressor operating electric current; to cause the rising of compressor line bag temperature, owing to heating (about 53 ℃) under the higher environment temperature, the temperature of refrigerant is higher again in the system; compressor assembly is under the higher temperature always to be moved; compressor assembly is frequent is operated in the overheating protection running status, can accelerate to expose the incipient fault of air conditioner in abominable service condition, and be no less than 100 hours the working time of this test procedure.
With placing under 24 ℃-43 ℃ the environment temperature, with 85% rated voltage power supply, operation is no less than 100 hours continuously with indoor unit and outdoor unit;
In above-mentioned duration of test, air conditioner phenomenons such as housing distortion, component failure should not occur; the overheating protection of compressor is shut down and should after the off-test air conditioner be returned to the normal condition operation less than 40 minutes, and the air conditioner all functions should be normal; security parameter should meet the GB requirement, finishes test.
When air conditioner is carried out fail-test, can also test in conjunction with other acceleration reliability test project, thereby reach the purpose that improves test efficiency.
Compare with the reliability test method of common air conditioner by test method provided by the invention and to have the following advantages:
The temperature sensing device (adopting thermistor usually) of indoor set can also can heat test when indoor temperature is lower than 32 ℃ owing to opened a way.
During test, indoor set can be operated in (in the insulation casing) under the environment temperature about 53 ℃ for a long time, housing, rotatable parts that can make indoor set etc. operates continually at can fully be tested each parts of indoor set and work long hours under hot conditions the fail-test in the time of can accelerating each parts heating operation of indoor set.
Compressor is when being lower than the rated operational voltage operation; running current can increase; bigger running current; to cause the rising of compressor line bag temperature; owing to heating (about 53 ℃) under the higher environment temperature, the temperature of refrigerant is higher again in the system, and compressor assembly is under the higher temperature always; compressor assembly is frequent is operated in the overheating protection running status, can accelerate to expose the incipient fault of air conditioner in abominable service condition.
Compressor assembly is under the high temperature, can quicken cracking, the knot carbon of refrigeration oil, accelerate the chemical reaction between moisture, air and the compressor part in the refrigeration oil, machine oil can be affected fast, accelerate the friction loss of compressor, reach and accelerate to expose the incipient fault of air conditioner in abominable service condition.
For transducer air conditioning, when the low-voltage heating operation, electric current is bigger, can make that the temperature of frequency converter module is higher, and when the system environments temperature was higher in addition, the temperature rise of frequency converter module was bigger, can quicken to expose the incipient fault of frequency converter.
Introduced in test the bigger acceleration stress (test condition of fault exposure duration when referring to shorten the air conditioner test, as: pressure, temperature, voltage, electric current etc., be a kind of inefficacy activation energy), make fault long being shortened of exposure duration, therefore, only need a spot of testing table number just can comprise under general stress condition, the fault that needs more testing table number in the fixed time testing phase, to come out, so, the present invention can significantly reduce the experiment quantity of air conditioner, reduce test period, reduced experimentation cost.
Under lower supply voltage, the working current of motors such as indoor fan motor, indoor interchange wind direction motor, outdoor fan motor will increase, and the thermal value of coil is increased, and can quicken to expose the incipient fault of motor and fan part,
Adopt reliability test method of the present invention to need not to build high temperature warehouse, the restriction in quantity, place can not be put to the test, cost is low, easily carry out, adopt the method for this accelerated test, not only shortened test period (required have only between at the trial conventional test time 1/10th), reduced experiment quantity, improved test efficiency, reduced experimentation cost, and, quicken to have exposed the incipient fault of air conditioner under mal-condition, to the raising of air conditioner quality and reliability, play great effect, shortened the cycle of launch products.
Claims (3)
1, a kind of shortening air conditioner fail-test time method is characterized in that, may further comprise the steps:
Make the temperature-sensitive control device of indoor set be in open-circuit condition, the adjustment of air conditioner is arranged on 32 ℃ high temperature retaining, air supply pattern is set to high wind, wind direction swing mode of operation, air conditioner is in heats operating condition;
Indoor machine of air-conditioner is placed in the insulation casing;
Provide the working voltage that is lower than rated operational voltage 15% to air conditioner, start air conditioner, make indoor set under 53 ℃ of left and right sides environment, move at least 100 hours continuously;
Again with indoor unit and outdoor unit with placing under 24 ℃-43 ℃ the environment temperature, provide working voltage with 85% rated operational voltage, after operation is no less than 100 hours continuously, change normal operating condition over to, finish test.
2, according to the method for the described shortening air conditioner reliability of claim 1 test period, it is characterized in that, described indoor machine of air-conditioner is placed is incubated in the casing, be that indoor machine of air-conditioner is placed in the slightly bigger insulation casing of volume ratio indoor set, air conditioner is worked under the environment temperature about 53 ℃.
According to the method for the described shortening air conditioner reliability of claim 2 test period, it is characterized in that 3, the described temperature-sensitive control device of indoor set that makes is in open-circuit condition, is that the temperature-sensitive thermistor in the indoor set is opened a way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011298111A CN1296690C (en) | 2001-10-23 | 2001-10-23 | Method of shortening reliability test time of refrigerating and warming air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011298111A CN1296690C (en) | 2001-10-23 | 2001-10-23 | Method of shortening reliability test time of refrigerating and warming air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1414359A CN1414359A (en) | 2003-04-30 |
| CN1296690C true CN1296690C (en) | 2007-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011298111A Expired - Fee Related CN1296690C (en) | 2001-10-23 | 2001-10-23 | Method of shortening reliability test time of refrigerating and warming air conditioner |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349614B (en) * | 2008-08-08 | 2011-03-30 | 海信科龙电器股份有限公司 | Multi-stress reinforced simulation test method of air conditioner |
| CN108776039A (en) * | 2018-05-31 | 2018-11-09 | 江西江铃集团新能源汽车有限公司 | Electric automobile air conditioner cooling test method and system |
| CN112686397B (en) * | 2020-12-18 | 2024-06-11 | 广东机电职业技术学院 | Air conditioner fault rate calculation method and device, computer equipment and storage medium |
| CN112924778B (en) * | 2021-01-25 | 2023-12-05 | 广东机电职业技术学院 | Tester and test method for reliability of electric appliance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0143134B1 (en) * | 1995-07-14 | 1998-07-15 | 전성원 | Efficiency tester of compressor for an automobile |
| CN1193105A (en) * | 1997-03-12 | 1998-09-16 | 三星电子株式会社 | Device for testing property of outdoor unit of air-conditioner |
| KR100247754B1 (en) * | 1997-08-27 | 2000-04-01 | 윤종용 | Apparatus for testing an outdoor unit for an air-conditioner |
| KR100247742B1 (en) * | 1997-06-30 | 2000-04-01 | 윤종용 | Apparatus for testing an outdoor unit of an room air conditioner for cooling only |
| CN1283778A (en) * | 1999-08-05 | 2001-02-14 | 三星电子株式会社 | Performance test method of air conditioner |
-
2001
- 2001-10-23 CN CNB011298111A patent/CN1296690C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0143134B1 (en) * | 1995-07-14 | 1998-07-15 | 전성원 | Efficiency tester of compressor for an automobile |
| CN1193105A (en) * | 1997-03-12 | 1998-09-16 | 三星电子株式会社 | Device for testing property of outdoor unit of air-conditioner |
| KR100247742B1 (en) * | 1997-06-30 | 2000-04-01 | 윤종용 | Apparatus for testing an outdoor unit of an room air conditioner for cooling only |
| KR100247754B1 (en) * | 1997-08-27 | 2000-04-01 | 윤종용 | Apparatus for testing an outdoor unit for an air-conditioner |
| CN1283778A (en) * | 1999-08-05 | 2001-02-14 | 三星电子株式会社 | Performance test method of air conditioner |
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| CN1414359A (en) | 2003-04-30 |
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