CN101943637A - Refrigerator and refrigerator outgoing detector - Google Patents
Refrigerator and refrigerator outgoing detector Download PDFInfo
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- CN101943637A CN101943637A CN 201010157992 CN201010157992A CN101943637A CN 101943637 A CN101943637 A CN 101943637A CN 201010157992 CN201010157992 CN 201010157992 CN 201010157992 A CN201010157992 A CN 201010157992A CN 101943637 A CN101943637 A CN 101943637A
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Abstract
The invention discloses a refrigerator outgoing detector which comprises a master control board, an ambient temperature sensor used for detecting the ambient temperature and a refrigerator built-in sensor used for detecting the interior temperature of a refrigerator, wherein the ambient temperature sensor and the refrigerator built-in sensor are respectively connected with the master control board; and the master control board is positioned at the back of the exterior of the refrigerator, the ambient temperature sensor is positioned at the top of the exterior of the refrigerator, and the refrigerator built-in sensor is positioned at the interior of the refrigerator. The invention also discloses a refrigerator which is equipped with the refrigerator outgoing detector. The invention can improve the refrigerator outgoing detection efficiency.
Description
Technical field
The present invention relates to field of household appliances, particularly a kind of refrigerator, and refrigerator dispatch from the factory pick-up unit and method.
Background technology
Refrigeration is the Core Feature of refrigerator, and detecting at dispatching from the factory of refrigeration performance is refrigerator product requisite one link of before sales that come into the market.Compare with conventional refrigerator, many warm areas refrigerator especially has the refrigerator of defrosting device, its refrigeration system, structure and electrical apparatus control system complexity, parts are numerous, after assembling is finished, to each parts can operate as normal and the refrigeration performance of refrigerator make detection, having relatively high expectations not only to checkout equipment and testing staff, and online detection time is longer, and is bigger to the production efficiency influence.
The detection method of dispatching from the factory of existing many warm areas refrigerator refrigeration performance mainly contains following several mode:
1, according to the certain detection order and the time interval, manually operate the button on the panel of refrigerator successively, data and the operation curve gathered by refrigerator external detection device detect and judge refrigeration performance.
In the method, all test processs and result judge that fully based on manually carrying out, labour intensity is big, and detection time is long, and stronger to operating personnel's technology dependence, production efficiency is low; Along with increasing of refrigerator warm area or a chamber and test item, original detection system can occur and can't satisfy the situation that detects requirement, thereby cause the extra investment of detection system transformation, upgrading aspect.
2, the built-in trace routine of refrigerator control system, through forcing refrigerator to enter trace routine after manually being provided with, test item and order can be controlled automatically by trace routine during detection, data acquisition relies on the pick-up unit of refrigerator outside to carry out, data and operation curve that the judgement that refrigeration performance is carried out is gathered based on the external detection device fully.
The built-in trace routine of refrigerator control system in the method need not manually frequently to be provided with button in the test process, there is the possibility of omission, erroneous judgement in the external detection system but its testing process places one's entire reliance upon, the testing result artificial judgment that places one's entire reliance upon.
3, the built-in trace routine of refrigerator control system, the trace routine of startup refrigerator when dispatching from the factory test.Because freezing and refrigerator chamber self disposes temperature sensor, can bear that part is freezing, the temperature detection of refrigerator chamber, all the other remaining chambers are by the detection of dispatching from the factory of external detection system, and needed temperature sensor is reduced to one by original several during factory inspection.
The temperature sensor that utilizes the refrigerator autogamy of the method detects that each is freezing, the refrigerator room temperature, the chamber is detected by the temperature sensing of the detection system of dispatching from the factory between residue, the judgement part of its testing result is based on the detection system self of refrigerator inside, partial dependency external detection system and testing staff.。
This shows that conventional detection mostly is traditional manual detection, semi-automatic detection greatly, be subject to human factor influence, cause occurring the phenomenon failing to judge, judge by accident, bring difficulty for quality control and management.Realize the detection of dispatching from the factory automatically of many warm areas refrigerator refrigeration performance and defrost performance how fast, accurately, at low cost, become the problem of refrigerator enterprises pay attention day by day.
Summary of the invention
The invention provides a kind of refrigerator pick-up unit that dispatches from the factory, can improve accuracy and efficient that refrigerator dispatches from the factory and detects.
On the one hand, the present invention has adopted following technical scheme:
A kind of refrigerator pick-up unit that dispatches from the factory, comprise master control borad, be used for the environment temperature sensor of testing environment temperature and be used to detect the refrigerator built-in sensors of internal temperature of refrigerator, wherein, described environment temperature sensor links to each other with master control borad respectively with the refrigerator built-in sensors, described master control borad is positioned at the back side of refrigerator outside, described environment temperature sensor is positioned at the top of refrigerator outside, and described refrigerator built-in sensors is positioned at refrigerator inside.
Above-mentioned refrigerator dispatches from the factory among the embodiment of pick-up unit, and described refrigerator built-in sensors comprises the freezer temperature sensor 1 that is used to detect freezer temperature, the refrigerator temperature sensor that is used to detect the temperature-changing chamber temperature sensor of temperature-changing chamber temperature and is used to detect temperature of refrigerating chamber.
Above-mentioned refrigerator dispatches from the factory among the embodiment of pick-up unit, and described refrigerator built-in sensors also comprises the reefer defrost temperature sensor that is used to detect the refrigerating chamber defrost temperature sensor of freezing chamber evaporator actuator temperature and is used to detect the refrigerator evaporator temperature.
Above-mentioned refrigerator dispatches from the factory among the embodiment of pick-up unit, also comprises the hummer 4 that is used to alarm, and described hummer links to each other with master control borad.
Above-mentioned refrigerator dispatches from the factory among the embodiment of pick-up unit, also comprises the display screen that is used for displays temperature and alarm, and described display screen links to each other with master control borad.
On the other hand, the invention also discloses a kind of refrigerator detection method of dispatching from the factory, comprise following steps:
A, if the detected temperature of refrigerator built-in sensors during greater than preset temperature, refrigerator enters the trace routine of dispatching from the factory;
After B, refrigerator enter the trace routine of dispatching from the factory, start refrigerating function;
C, in detection time, with reference to environment temperature, if the refrigerator temperature fall meets the refrigeration criterion of acceptability, then this refrigerator refrigeration is qualified; If the refrigerator refrigeration is defective, then produce the refrigeration alarm.
Above-mentioned refrigerator dispatches from the factory among the embodiment of detection method, and is further comprising the steps of after the described step C:
After D, detection time finished, refrigerator started the defrost function;
E, defrost temperature sensor detect evaporator temperature, and with reference to environment temperature, if the evaporator temperature ascensional range meets the defrost criterion of acceptability, then this refrigerator defrost is qualified; If the refrigerator defrost is defective, then produce the defrost alarm.
Above-mentioned refrigerator dispatches from the factory among the embodiment of detection method, and is further comprising the steps of after the described step C:
Master control borad will freeze to alarm and be sent to hummer, and described hummer sends corresponding sound alarm;
Further comprising the steps of after the described step e:
Master control borad is sent to hummer with the defrost alarm, and described hummer sends corresponding sound alarm;
Above-mentioned refrigerator dispatches from the factory among the embodiment of detection method, and is further comprising the steps of:
Master control borad is sent to display screen with refrigerator built-in sensors and the detected temperature of environment temperature sensor, and display screen shows corresponding temperature;
To freeze alarm or defrost alarm of master control borad is sent to display screen, shows corresponding alarm on the display screen.
In addition, the invention also discloses a kind of refrigerator, described refrigerator is furnished with the above-mentioned refrigerator pick-up unit that dispatches from the factory.
Compared with prior art, beneficial effect of the present invention is:
The present invention includes master control borad, be used for the environment temperature sensor of testing environment temperature and be used to detect the refrigerator built-in sensors of internal temperature of refrigerator, can be according to the automatic start detection function of the temperature of refrigerator inside, and whether the refrigerating function of judging refrigerator automatically is qualified, need not manually to place sensor, the detection efficiency height; Simultaneously the combining environmental temperature sensor judges whether refrigerator is qualified among the present invention, judges more accurately, more reasonable, has improved the dispatch from the factory accuracy of detection of refrigerator.
Description of drawings
Fig. 1 has exemplarily described the refrigerator of the present invention pick-up unit structured flowchart that dispatches from the factory;
Fig. 2 has exemplarily described the position view of master control borad of the present invention;
Fig. 3 has exemplarily described the position view of environment temperature sensor of the present invention and display screen.
Embodiment
Contrast accompanying drawing and the present invention is further elaborated below in conjunction with embodiment.
As shown in Figure 1, a kind of refrigerator pick-up unit that dispatches from the factory, comprise master control borad 1, be used for the environment temperature sensor 2 of testing environment temperature and be used to detect the refrigerator built-in sensors of internal temperature of refrigerator, wherein, described environment temperature sensor 2 links to each other with master control borad 1 respectively with the refrigerator built-in sensors, described master control borad 1 is positioned at the back side of refrigerator outside, and described environment temperature sensor 2 is positioned at the top of refrigerator outside, and described refrigerator built-in sensors is positioned at refrigerator inside.
Embodiment one:
As shown in Figure 1, the refrigerator of the one embodiment of the invention pick-up unit that dispatches from the factory, comprise master control borad 1, be used for the environment temperature sensor 2 of testing environment temperature and be used to detect the refrigerator built-in sensors of internal temperature of refrigerator, wherein, environment temperature sensor 2 links to each other with master control borad 1 respectively with the refrigerator built-in sensors, master control borad 1 is positioned at the back side of refrigerator outside, and environment temperature sensor 2 is positioned at the top of refrigerator outside, and the refrigerator built-in sensors is positioned at refrigerator inside.
The position of master control borad as shown in Figure 2.
The residing environment temperature of refrigerator has bigger influence to the refrigeration of refrigerator, and for example environment temperature is low, and the refrigerator inside refrigerating speed is fast, and the environment temperature height, then the refrigerator inside refrigerating speed is slower, so the refrigerator in the present embodiment has been equipped with environment temperature sensor 2.
The position of environment temperature sensor as shown in Figure 3.
Behind the configuration surroundings temperature sensor, can carry out more accurate, more rational judgement to performances such as the refrigeration of refrigerator, defrosts, improve the accuracy that refrigerator dispatches from the factory and detects in conjunction with ambient temperature.
The refrigerator of one embodiment of the invention dispatches from the factory in the pick-up unit, and the refrigerator built-in sensors comprises the freezer temperature sensor 31 that is used to detect freezer temperature, the refrigerator temperature sensor 33 that is used to detect the temperature-changing chamber temperature sensor 32 of temperature-changing chamber temperature and is used to detect temperature of refrigerating chamber.
The refrigerator of one embodiment of the invention dispatches from the factory in the pick-up unit, and the refrigerator built-in sensors also comprises the reefer defrost temperature sensor 35 that is used to detect the refrigerating chamber defrost temperature sensor 34 of freezing chamber evaporator actuator temperature and is used to detect the refrigerator evaporator temperature.
During refrigerator operate as normal refrigeration, the moisture in the article that store in the refrigerator can be taken away by cold air, and freezes fin and pipeline surface in evaporator by evaporator the time, forms the frost layer.The existence of frost layer will influence the heat interchange of evaporator, make the refrigeration performance variation of refrigerator, even the circulation that can block air, cause fault to take place.For guaranteeing the normal operation of wind cooling refrigerator, defrost need be regularly carried out on the evaporator fin surface.
During the refrigerator defrost, the frost on the defrosting device heating and melting evaporator, refrigerating chamber defrosting sensor 34 and reefer defrosting sensor 35 detect the temperature of evaporator, and the combining environmental temperature judges whether the defrost function of refrigerator is qualified.
The refrigerator of one embodiment of the invention dispatches from the factory in the pick-up unit, also comprises the hummer 4 that is used to alarm, and hummer 4 links to each other with master control borad 1.
The refrigerator of one embodiment of the invention dispatches from the factory in the pick-up unit, also comprises the display screen 5 that is used for displays temperature and alarm, and display screen 5 links to each other with master control borad 1.
The position of display screen as shown in Figure 3.
When refrigerator refrigeration or defrost are defective, master control borad 1 produces the refrigeration alarm, and will freeze alarm or defrost alarm are sent to hummer 4 and display screen 5, hummer 4 can send this refrigerator refrigeration of corresponding auditory tone cues or alarm defective, also can show corresponding alarm on the display screen 5, and can show this refrigerator between which the refrigeration or the defrost of chamber defective.
Hummer 4 and display screen 5 alarms can have simultaneously, also can adopt wherein a kind of alarm mode according to the concrete signal of refrigerator, and for example some refrigerator does not have display screen 5, then adopts hummer 4 alarms, and some refrigerator has display screen 5, then can display screen 5 alarms.
Adopt hummer 4 to alarm, lower for the configuration requirement of refrigerator, can also in time notify the testing staff; Adopt display screen 5 to alarm, more directly perceived, it is more accurate to notify.Adopt alarm to safeguard that to producer refrigerator has brought facility, improved the efficient that refrigerator dispatches from the factory and detects.
The invention also discloses a kind of refrigerator, this refrigerator is furnished with the above-mentioned refrigerator pick-up unit that dispatches from the factory.
Embodiment two:
Be furnished with above-mentioned refrigerator the dispatch from the factory embodiment of detection method of the refrigerator of pick-up unit that dispatches from the factory and comprise following steps:
Step 101, after the refrigerator energising, the refrigerator built-in sensors detects internal temperature of refrigerator, and refrigerator environment temperature sensor 2 is the testing environment temperature simultaneously.
Step 102, if the built-in freezer temperature sensor 31 detected internal temperature of refrigerator of refrigerator are during greater than preset temperature, refrigerator enters the trace routine of dispatching from the factory.
Generally, preset temperature is set to zero degree.
After step 103, refrigerator enter the trace routine of dispatching from the factory automatically, start refrigerating function.
Refrigerator starts refrigerating function, and compressor, blower fan, solenoid valve etc. are started working, and gives each chamber refrigeration of refrigerator.
Step 104, in detection time, with reference to environment temperature, if the refrigerator temperature fall meets the refrigeration criterion of acceptability, then this refrigerator refrigeration is qualified.
Be provided with according to the concrete condition of refrigerator by producer detection time, and generally, be set to one hour detection time.For complex structure, the refrigerator that a chamber is more, a chamber is bigger, detection time can proper extension.
The refrigeration criterion of acceptability refers under current environmental temperature, and in detection time, whether the decline temperature of each chamber reaches certain amplitude in the refrigerator.
In the present embodiment, the refrigeration criterion of acceptability shown in table 1, table 2, table 1 be environment temperature be 25 ± 2 (℃) time the refrigeration criterion of acceptability of each chamber, table 2 be environment temperature be 32 ± 2 (℃) time the refrigeration criterion of acceptability of each chamber.
Table 1
Table 2
Numerical value in the above table is empirical value, can be provided with according to the concrete model of refrigerator and the environment temperature of detection.
In the present embodiment, when environment temperature is 26 ℃, the refrigerator of a certain model detected the refrigerating chamber cooling and has reached 21 ℃ in the time of 10 minutes, in the time of 30 minutes, detect the reefer cooling and reach 12 ℃, the cooling that detected temperature-changing chamber in the time of 50 minutes reaches 10 ℃, then the refrigeration performance of this refrigerator reaches the refrigeration criterion of acceptability, and the refrigerating function of this refrigerator is qualified.
Step 106, if the refrigerator refrigeration is defective, then produce the refrigeration alarm, master control borad 1 will freeze to alarm and be sent to hummer 4 and display screen 5, it is defective that hummer 4 can send this refrigerator refrigeration of corresponding auditory tone cues, also can show corresponding alarm on the display screen 5, and can show this refrigerator between which the refrigeration of chamber defective.
Step 107, when after the detection time that is provided with, refrigerator starts the defrost function, and refrigerating chamber defrosting sensor 34 and reefer defrosting sensor 35 detect refrigerating chamber, refrigerator evaporator temperature respectively.
Step 108, in certain defrost time, with reference to environment temperature, if the evaporator temperature ascensional range meets the defrost criterion of acceptability, then this refrigerator defrost is qualified.
The defrost criterion of acceptability difference of the refrigerator of different model is pressed empirical value voluntarily by producer and is set, and no longer describes in detail herein.
Step 109, if the refrigerator defrost is defective, then produce the defrost alarm, master control borad 1 is sent to hummer 4 and display screen 5 with the defrost alarm, it is defective that hummer 4 can send this refrigerator defrost of corresponding auditory tone cues, also can show corresponding alarm on the display screen 5, and can show this refrigerator between which the defrost of chamber defective.
Refrigeration and all qualified refrigerator of defrost are only the qualified refrigerator of performance.
Step 110, after detection finished, refrigerator withdrawed from trace routine.
Refrigerator withdraws from after the trace routine, and trace routine is not restarted and worked in the normal use of user, and the user is used not influence of refrigerator.
Refrigerator breaks down when reprocessing, and producer is the start detection program once more, is convenient to the accurate orientation problem of producer.
The present invention includes master control borad, be used for the environment temperature sensor of testing environment temperature and be used to detect the refrigerator built-in sensors of internal temperature of refrigerator, can be according to the automatic start detection function of the temperature of refrigerator inside, and whether the refrigerating function of judging refrigerator automatically is qualified, need not manually to place sensor, the detection efficiency height; Simultaneously the combining environmental temperature sensor judges whether refrigerator is qualified among the present invention, judges more accurately, more reasonable, has improved the dispatch from the factory accuracy of detection of refrigerator.The present invention also comprises refrigerating chamber defrosting sensor and reefer defrosting sensor, can judge whether the defrost performance of refrigerator is qualified, and refrigerator has been carried out more fully judging.The present invention also comprises the display screen of the hummer that is used to alarm, and can point out the testing staff in proper order, has brought facility also for the maintenance of producer, has improved the efficient that refrigerator dispatches from the factory and detects.Display screen among the present invention also can be used for displays temperature, and producer can monitor the temperature of each chamber of refrigerator in real time, has brought facility to producer.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, but this example of just lifting for ease of understanding should not think that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can make various possible being equal to and change or replacement, these changes or replacement all should belong to protection scope of the present invention.
Claims (10)
1. refrigerator pick-up unit that dispatches from the factory, it is characterized in that, comprise master control borad (1), be used for the environment temperature sensor (2) of testing environment temperature and be used to detect the refrigerator built-in sensors of internal temperature of refrigerator, wherein, described environment temperature sensor (2) links to each other with master control borad (1) respectively with the refrigerator built-in sensors, described master control borad (1) is positioned at the back side of refrigerator outside, and described environment temperature sensor (2) is positioned at the top of refrigerator outside, and described refrigerator built-in sensors is positioned at refrigerator inside.
2. the refrigerator as claimed in claim 1 pick-up unit that dispatches from the factory, it is characterized in that described refrigerator built-in sensors comprises the freezer temperature sensor (31) that is used to detect freezer temperature, the refrigerator temperature sensor (33) that is used to detect the temperature-changing chamber temperature sensor (32) of temperature-changing chamber temperature and is used to detect temperature of refrigerating chamber.
3. the refrigerator as claimed in claim 2 pick-up unit that dispatches from the factory, it is characterized in that described refrigerator built-in sensors also comprises the reefer defrost temperature sensor (35) that is used to detect the refrigerating chamber defrost temperature sensor (34) of freezing chamber evaporator actuator temperature and is used to detect the refrigerator evaporator temperature.
4. the refrigerator as claimed in claim 3 pick-up unit that dispatches from the factory is characterized in that also comprise the hummer (4) that is used to alarm, described hummer (4) links to each other with master control borad (1).
5. the refrigerator as claimed in claim 3 pick-up unit that dispatches from the factory is characterized in that also comprise the display screen (5) that is used for displays temperature and alarm, described display screen (5) links to each other with master control borad (1).
6. refrigerator detection method of dispatching from the factory is characterized in that, comprises following steps:
A, if the detected temperature of refrigerator built-in sensors during greater than preset temperature, refrigerator enters the trace routine of dispatching from the factory;
After B, refrigerator enter the trace routine of dispatching from the factory, start refrigerating function;
C, in detection time, with reference to environment temperature, if the refrigerator temperature fall meets the refrigeration criterion of acceptability, then this refrigerator refrigeration is qualified; If the refrigerator refrigeration is defective, then produce the refrigeration alarm.
7. the refrigerator as claimed in claim 6 detection method of dispatching from the factory is characterized in that, and is further comprising the steps of after the described step C:
After D, detection time finished, refrigerator started the defrost function;
E, defrost temperature sensor detect evaporator temperature, and with reference to environment temperature, if the evaporator temperature ascensional range meets the defrost criterion of acceptability, then this refrigerator defrost is qualified; If the refrigerator defrost is defective, then produce the defrost alarm.
8. the refrigerator as claimed in claim 7 detection method of dispatching from the factory is characterized in that, and is further comprising the steps of after the described step C:
Master control borad will freeze to alarm and be sent to hummer, and described hummer sends corresponding sound alarm;
Further comprising the steps of after the described step e:
Master control borad is sent to hummer with the defrost alarm, and described hummer sends corresponding sound alarm.
9. the refrigerator as claimed in claim 7 detection method of dispatching from the factory is characterized in that, and is further comprising the steps of:
Master control borad is sent to display screen with refrigerator built-in sensors and the detected temperature of environment temperature sensor, and display screen shows corresponding temperature;
To freeze alarm or defrost alarm of master control borad is sent to display screen, shows corresponding alarm on the display screen.
10. a refrigerator is characterized in that, described refrigerator is furnished with as each described refrigerator of claim 1 to 5 pick-up unit that dispatches from the factory.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010157992 CN101943637A (en) | 2010-04-21 | 2010-04-21 | Refrigerator and refrigerator outgoing detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010157992 CN101943637A (en) | 2010-04-21 | 2010-04-21 | Refrigerator and refrigerator outgoing detector |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102347262A Division CN102721566A (en) | 2010-04-21 | 2010-04-21 | Factory detecting method for refrigerator |
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| CN101943637A true CN101943637A (en) | 2011-01-12 |
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| CN102175945A (en) * | 2011-02-22 | 2011-09-07 | 合肥美的荣事达电冰箱有限公司 | Refrigerating apparatus automatic detection method and device, refrigerating apparatus |
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| CN102636361A (en) * | 2012-03-28 | 2012-08-15 | 佛山市顺德区奥达信电器有限公司 | Refrigerator performance detecting method and temperature compensating method |
| CN103364667A (en) * | 2013-07-24 | 2013-10-23 | 海信容声(广东)冰箱有限公司 | Testing apparatus and testing method for refrigerator circuit boards |
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| CN102175945B (en) * | 2011-02-22 | 2014-03-12 | 合肥美的电冰箱有限公司 | Refrigerating apparatus automatic detection method and device, refrigerating apparatus |
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| CN105092273A (en) * | 2015-07-15 | 2015-11-25 | 青岛海尔股份有限公司 | Refrigerator test system and test method |
| CN105630035A (en) * | 2015-12-21 | 2016-06-01 | 国网上海市电力公司 | Method of detecting temperature field control system for incubator specially for sodium sulfur cell module |
| CN106226102A (en) * | 2016-07-29 | 2016-12-14 | 合肥华凌股份有限公司 | A kind of refrigerator commodity device for detecting performance, system, method and refrigerator |
| CN107340149A (en) * | 2017-06-02 | 2017-11-10 | Tcl家用电器（合肥）有限公司 | Delivery detection method for refrigerator, detection means and refrigerator |
| CN107340149B (en) * | 2017-06-02 | 2019-07-23 | Tcl家用电器（合肥）有限公司 | Delivery detection method for refrigerator, detection device and refrigerator |
| CN107291604A (en) * | 2017-07-03 | 2017-10-24 | 北京京东尚科信息技术有限公司 | Electronic equipment detection method and system |
| CN107300287A (en) * | 2017-07-31 | 2017-10-27 | 绵阳美菱软件技术有限公司 | A kind of refrigerator detection method and device |
| CN108593317A (en) * | 2018-02-27 | 2018-09-28 | 广州美的华凌冰箱有限公司 | Delivery detection method for refrigerator, refrigerator outgoing detector and refrigerator |
| CN113631135A (en) * | 2019-04-09 | 2021-11-09 | 个人冷却技术有限责任公司 | Portable cooling system, apparatus and method |
| CN110044116A (en) * | 2019-04-30 | 2019-07-23 | 长虹美菱股份有限公司 | The automatically controlled direct-cooled micro- rime ice case of lower jelly and its assembly method are hidden in one kind |
| CN110779748A (en) * | 2019-10-30 | 2020-02-11 | 合肥通用机械研究院有限公司 | Multi-temperature-zone transport refrigeration unit performance test device and test method |
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