CN1683926A - Equivalent changing method for relative thermotechnical test parameter in environment temperature changing process - Google Patents
Equivalent changing method for relative thermotechnical test parameter in environment temperature changing process Download PDFInfo
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- CN1683926A CN1683926A CN 200410017622 CN200410017622A CN1683926A CN 1683926 A CN1683926 A CN 1683926A CN 200410017622 CN200410017622 CN 200410017622 CN 200410017622 A CN200410017622 A CN 200410017622A CN 1683926 A CN1683926 A CN 1683926A
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- 238000012360 testing method Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000011426 transformation method Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 206010000234 Abortion spontaneous Diseases 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013481 data capture Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 208000015994 miscarriage Diseases 0.000 description 1
- 208000000995 spontaneous abortion Diseases 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000013316 zoning Methods 0.000 description 1
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The equivalent conversion method of thermotechnical parameter for varying temperature environment includes the following steps: taking the critical qualified product with critical value P0 of the thermotechnical parameter under standard test environment temperature T0, measuring the equivalent thermotechnical parameter P* of the critical product under non-standard test environment temperature T*. The method can facilitate the mass measurement of relevant thermotechnical parameter.
Description
Technical field:
The present invention relates to the testing thermal parameters technology under non-standard test environment temperature conditions.
Background technology:
As everyone knows, product is carried out relevant thermal parameter (example: temperature, liter or cooling rate etc.) when testing, test environment there is strict requirement, on the whole, mainly contains: the fluctuation range up and down of environment temperature T and permission thereof, and the fluctuation range up and down of wind speed V and permission thereof, in addition, also have the fluctuation range up and down of its permission of ambient humidity, or the like.Yet, the thermal testing environmental requirement of above-mentioned perfect condition, generally be difficult to accomplish because:
Test environment under the perfect condition is: the wherein each some temperature difference is zero, and the wind speed of each point is zero.Obviously, this is definitely out of the question.General constant temperature enclosure as test environment, constant temperature enclosure when especially typical products in mass production being tested, the temperature of its constant temperature, be to carry out the thermoregulator of test environment by cold wind or hot blast that air-conditioner device is produced by boasting, must make that like this speed air flow V of whole indoor test environment and the temperature T in each test zone are unequal, and differ greatly.
The way that solves: generally be the area that dwindles test cabinet (test zone) as much as possible, improve the degree of uniformity of above-mentioned " V " and " T " as much as possible with this.
Obviously, do like this, the test to the thermal technology of the product of producing continuously in enormous quantities must examine parameter will cause sizable trouble.Otherwise, will be at a constant temperature and do not measure the very poor thermal parameter of its precision in the overall situation of permanent wind speed whether data are differentiated in qualified reference as product not, its probability of miscarriage of justice is sizable.
Can, equally also can test out under non-standard test environment conditions: the method for testing of the relevant thermal parameter that can count when only testing under the standard environment condition be the problem that people are seeking solution always for this reason.
Summary of the invention:
The present invention's purpose is just in order to solve the problem that above-mentioned people are seeking solution always.
In order to realize goal of the invention, intend adopting following technology, promptly following equivalent transformation method step:
Be taken at standard testing environment temperature T
0Under (fluctuating error of " V " and " T " is all up to standard) condition, its relevant thermal parameter that measures just in time equals qualified critical numerical value " P
0" product, again this product is placed on non-standard test environment temperature T
*In (fluctuating error of " V " and " T " is all up to standard) zone, then can measure under nonstandard condition corresponding to above-mentioned " P
0" equivalent qualified critical numerical value " P
*".Afterwards, this " P
*" just become in this nonstandard test environment temperature T
*Differentiate the whether qualified critical numerical value of product under the condition.
The present invention's characteristics compared with the prior art:
Because the present invention is same that concentrated test product in enormous quantities and can't reach in the overall situation that standard test condition requires (example: the bound of " V " and " T " gap that fluctuates alters a great deal) everywhere, implemented to divide temperature province and carried out the equivalent measuring technology method that different test indexs require, this just is: when can be in very big nonstandard test cabinet typical products in mass production being carried out the test of relevant thermal parameter simultaneously, can not reduce its measuring accuracy, create condition.
Description of drawings:
Figure has illustrated: a kind of scheme of refrigerator in enormous quantities being carried out simultaneously the zoning with test environment temperature T difference (" cooling rate " in each zone the requires also different) test of " cooling rate " (essential items for inspection of each product) parameter testing.
A: first test environment the temperature province (" V wherein
1" and " T
1" all in the error range of industry standard); B: second test environment the temperature province (" V wherein
2" and " T
2" all in the error range of industry standard); C: the 3rd test environment temperature province (" V wherein
3" and " T
3" all in the error range of industry standard); 1: large-scale constant temperature test cabinet (medial temperature is that 32 ℃ but its temperature T fluctuation range and wind speed V fluctuation range all exceed standard significantly); 2: the air conditioner that is arranged in indoor both sides; 3: proper alignment is at indoor tested refrigerator.
Embodiment:
Because illustrated large-scale constant temperature test cabinet (1) although medial temperature be 32 ℃, it is about 3 ℃ of temperature fluctuation range up and down, much larger than 0.5 ℃ of standard code.If test cabinet (1) is divided into three different temperature provinces, so, at three nonstandard environment temperature T
*Zone (A), (B) and (C) in, " T " in each test zone environment temperature, the error range of its permission, all will meet relevant industries standard-required (limit that fluctuates up and down is in 0.5 ℃), obviously, in the testing thermal parameters process, at first must with respect to environment temperature " T ", by dividing region, always can be so that it reaches the requirement of standard code, as for speed air flow " V ", in nonstandard environment, just can't take into account, yet, after equivalence excessively hereinafter, will be there is no need to take into account its conclusion fully.
Concentrate on the qualified critical numerical value " P of the cooling rate P that in the relevant cold house of each refrigerator, measures among three different temperatures zones (A), (B) and (C)
*", just differentiate in above-mentioned three nonstandard temperature T
*Qualified critical numerical value " the P of the relevant cold house of tested refrigerator (3) in the test environment
*" be different, " the P that these are different
*" data capture method is as follows:
Get several refrigerators, in meeting the qualified small-sized test cabinet of 32 ℃ of the requirement of industry standard test environment and wind speed V (" V " wherein and " T " all the scope of fluctuating error up and down in) fully, carry out the project testing of cooling rate P in industry standard, at last, always can find a refrigerator, its cooling rate P just in time equals qualified critical numerical value " P
0".
Then, with this refrigerator be placed on respectively above-mentioned three temperature provinces (A), (B) and (C) in, respectively it is carried out the test of cooling rate P again, and measures corresponding " P respectively
1", " P
2" and " P
3", and these three and " P
0" different data " P
1", " P
2" and " P
3"; be exactly corresponding respectively in the first test environment temperature province (A) (may be 31 ℃ and wind speed V bigger), the second test environment temperature province (B) (may be 29 ℃ and wind speed V bigger than normal) and the 3rd test environment temperature province (C) (may be 35 ℃ but wind speed V is qualified), with the qualified critical numerical value " P of cooling rate P test event in the qualified industry standard test environment of 32 ℃ of environment temperatures and wind speed V (less than 0.25 meter per second)
0", equivalent relation is arranged, can be as judging each nonstandard environment temperature T
*The data that whether tested refrigerator (3) is qualified in the zone are according to " P
*".
So far, be not difficult to find out: with relevant criterion (must be qualified) equivalence to wind speed " V " and temperature " T " and the fluctuation range that allows thereof at different warm area T
*Nonstandard test process in, for the wind speed that is wherein caused by thermostatic equipment air conditioner (2), promptly the requirement of speed air flow " V " can be ignored fully.
In sum, as long as by equivalent transformation of serving as theme of the present invention with temperature T, will give the quality inspection work of nature of production, bring great convenience: even look in the poor test cabinet (1) at an oversized temperature equalization degree utmost point, carry out the testing thermal parameters of hundreds of refrigerators simultaneously, its measuring accuracy also can be very high.
Claims (1)
1. the method for the thermal testing parameter equivalent conversion of a temperature environment from standard to non-standard conversion process is characterized in that the equivalent transformation method step is as follows:
Be taken at standard testing environment temperature T
0Under the condition, its thermal parameter that measures just in time equals qualified critical numerical value " P
0" product, again this product is placed on non-standard test environment temperature T
*In the zone, then can measure under nonstandard condition corresponding to above-mentioned " P
0" equivalent qualified critical numerical value " P
*".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410017622 CN1683926A (en) | 2004-04-12 | 2004-04-12 | Equivalent changing method for relative thermotechnical test parameter in environment temperature changing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410017622 CN1683926A (en) | 2004-04-12 | 2004-04-12 | Equivalent changing method for relative thermotechnical test parameter in environment temperature changing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1683926A true CN1683926A (en) | 2005-10-19 |
Family
ID=35263342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410017622 Pending CN1683926A (en) | 2004-04-12 | 2004-04-12 | Equivalent changing method for relative thermotechnical test parameter in environment temperature changing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1683926A (en) |
-
2004
- 2004-04-12 CN CN 200410017622 patent/CN1683926A/en active Pending
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|---|---|---|---|
| C06 | Publication | ||
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| ASS | Succession or assignment of patent right |
Owner name: CHINA METROLOGY COLLEGE Free format text: FORMER OWNER: LIANG JIALIN Effective date: 20090424 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20090424 Address after: China Jiliang University, Xiasha Higher Education Zone, Zhejiang, Hangzhou Province, China Code: 310018 Applicant after: China Jiliang University Address before: Branch of electrical and mechanical engineering, China Jiliang University, Xiasha Higher Education Zone, Hangzhou, Zhejiang Province, China: 310018 Applicant before: Liang Jialin |