CN102508482B - Detection device and system for detecting controller of refrigerator - Google Patents
Detection device and system for detecting controller of refrigerator Download PDFInfo
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- CN102508482B CN102508482B CN2011103104494A CN201110310449A CN102508482B CN 102508482 B CN102508482 B CN 102508482B CN 2011103104494 A CN2011103104494 A CN 2011103104494A CN 201110310449 A CN201110310449 A CN 201110310449A CN 102508482 B CN102508482 B CN 102508482B
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Abstract
The invention provides a detection device and a system for detecting a controller of a refrigerator. The detection device comprises a plurality of loads and a tool detection board provided with a plurality of load input terminals and a plurality of load output terminals, wherein the load input terminals correspond to the load output terminals one by one. When the controller of the refrigerator needs to be detected, at least one part of the load output terminals of the tool detection board is connected with the controller, and at least one part of a plurality of the loads is connected with the load output terminals corresponding to the load input terminals which are connected with the controller, wherein the loads connected with the load output terminals are controlled by a control program pre-set in the controller according to a control manner of the control program to turn on and turn off after a user selects a detection function on a control panel. The detection device disclosed by the invention has the advantages of fast detection speed, and complete detection aspects and detection.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, particularly a kind of pick-up unit and detection system of the controller for detection of refrigerator.
Background technology
Now people's life can not be left electronic product, and also at full speed increasing of the functional type of electronic product, and corresponding various loads are also increasing.But the hardware circuit board of electronic product is always towards highly integrated development, and volume is more and more less, and the probability that components and parts and connection make mistakes will increase a lot.
take the refrigerator in electric equipment as example, develop into three-door refrigerator from two traditional refrigerators, along with updating of refrigerator structure, the function of refrigerator is development thereupon also, cause the design complexities of controller of each load of control of refrigerator more and more higher, and in order to improve the storage capacity of refrigerator, the controller of refrigerator is more and more less in design, cause thus the connection error rate of controller to become large, therefore, in controller is carried out testing process, if also according to traditional controller detection mode, detect, for example by surveying instrument, carrying out controller (hardware) detects or the hardware that detects is switched on, the mode that achieves corresponding function detects, need to expend a large amount of time, and very possible undetected many places, finally cause the specification of refrigerator not high, the quality of refrigerator can not get ensureing.
Summary of the invention
The present invention is intended to one of solve the problems of the technologies described above at least.
For this reason, one object of the present invention is to propose the pick-up unit that a kind of detection speed is fast, detect the perfect controller for detection of refrigerator.
Another object of the present invention is to propose a kind of detection system of the controller for detection of refrigerator.
to achieve these goals, the pick-up unit of the controller for detection of refrigerator of first aspect present invention embodiment comprises a plurality of loads, the frock check-out console, described frock check-out console has a plurality of load access terminals and a plurality of load lead-out terminal, wherein, described a plurality of load access terminal is corresponding one by one with a plurality of load lead-out terminals, in the time need to detecting the controller of described refrigerator, at least a portion of a plurality of load access terminals of described frock check-out console is connected with described controller, and the load lead-out terminal that at least a portion in a plurality of loads is corresponding with the load access terminal of the described controller of access connects, wherein, when the user starts shooting and shuts down according to the control mode of described control program by the predefined control program of described controller is controlled the load that is connected with described load lead-out terminal after selecting measuring ability on control panel.
Pick-up unit according to the embodiment of the present invention, connect the interface of refrigerator load and the load incoming end sub-connection of frock check-out console by each of the controller with refrigerator, and by the load lead-out terminal of frock check-out console, connect upper a plurality of loads, whether normally can detect simultaneously the whole load runnings of controller control refrigerator, therefore, save a large amount of detection times, and avoided undetected to each load control circuit of controller.And a plurality of loads can have been saved the cost of pick-up unit with such as illuminating lamp etc., detecting, ultimate guarantee the product quality that comes into the market of refrigerator.Promoted the quality of refrigerator.
In addition, can also have following additional technical characterictic according to the pick-up unit of the controller for detection of refrigerator of the present invention:
In one embodiment of the invention, the control mode of described control program is closed for controlling after the load that is connected with described load lead-out terminal in turn started for first schedule time.
In one embodiment of the invention, the described load that is connected with the load lead-out terminal comprises first to fourth load, wherein said the first load and the second load are illuminating lamp, described the 3rd load is for being used for the air door of refrigerator, described the 4th load is for being used for the ice machine of refrigerator, wherein, if observe after described first to fourth load in turn started for first schedule time according to the control mode of described control program, closes, judge that described controller is normal, otherwise judge that described controller is abnormal.
in one embodiment of the invention, a plurality of load incoming end attached bags of described frock check-out console are drawn together first to fourth load access terminal, described a plurality of load lead-out terminal comprises first to fourth load lead-out terminal, wherein, described first to fourth load access terminal is corresponding one by one with described first to fourth load lead-out terminal respectively, when the controller to described refrigerator detects, first to fourth load output interface of described controller is connected with described first to fourth load access terminal successively, described first to fourth load lead-out terminal is connected with described first to fourth load respectively.
In one embodiment of the invention, in described refrigerator normal course of operation, first to fourth load output interface of described controller is connected to control respectively the operation of described compressor, defrosting heater, air door and ice machine with compressor, defrosting heater, air door and the ice machine of described refrigerator.
In one embodiment of the invention, described first schedule time is 2-5 second.
The detection system of the controller for detection of refrigerator that second aspect present invention embodiment proposes comprises: control panel, described control panel are arranged on the outside surface of door body of refrigerator; Controller, described controller are connected with described control panel and are used for controlling the operation of a plurality of loads of described refrigerator under described refrigerator normal operating conditions; Pick-up unit, described pick-up unit is the pick-up unit of the described controller for detection of refrigerator of above-mentioned first aspect embodiment, described pick-up unit is connected with described controller when described refrigerator enters detected state, wherein said controller is controlled described pick-up unit according to predefined control program a plurality of loads move so that described controller is detected according to the control mode of described control program.
That the detection system of the embodiment of the present invention has is fast to the refrigerator controller detection speed, detect comprehensively, detect advantage accurately.And this system is simple, and cost is low.
In addition, can also have following additional technical characterictic according to the detection system of the controller for detection of refrigerator of the present invention:
In one embodiment of the invention, described control panel comprises unlock key, wherein, press described unlock key in the very first time section after described refrigerator is started to switch on, described control panel is controlled described refrigerator and is entered detected state so that described controller is detected.
In one embodiment of the invention, after described refrigerator entered detected state, described control panel sent and detects control signal described controller, and described controller is carried out predefined control program in described controller according to described detection control signal.
In one embodiment of the invention, described control program cut off the power supply for the second time for controlling after a plurality of of described controller and terminal that described refrigerator load is connected are carried out N the very first time of alternately switching on to the external world.
In one embodiment of the invention, described N is 10-15 time, if wherein observe after first to fourth load of described pick-up unit all alternately starts the described very first time and closed for the second time, judge that described controller is normal, otherwise according to not abnormal according to the corresponding control circuit of the described controller of load judgment of described control program control executive mode operation in first to fourth load.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or by practice of the present invention, recognize.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the schematic diagram that the pick-up unit of the controller for detection of refrigerator of one embodiment of the invention is connected with controller; With
Fig. 2 is the testing process schematic diagram of pick-up unit of the controller for detection of refrigerator of one embodiment of the invention.
Embodiment
Below describe embodiments of the invention in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
in description of the invention, it will be appreciated that, term " " center ", " vertically ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance.
In description of the invention, need to prove, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be done broad understanding, for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also to be electrically connected to; Can be directly to be connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand above-mentioned term concrete meaning in the present invention.
Before the pick-up unit of the controller for detection of refrigerator of describing the embodiment of the present invention, refrigerator be need understand and control panel (user interface) and controller (function control panel), control panel 110 as shown in Figure 1 and controller 120 generally included.Comprise a plurality of buttons on control panel, when the user presses different key, can select different functions, such as the cryogenic temperature of regulating refrigerator or selection defrost function etc., and function signal is sent to controller, the load of refrigerator all is connected with controller, and by controller, controlled, for example the load of refrigerator comprises that compressor, ice machine, air door, defrosting heater even load control start and stop by controller, and controller can be controlled each load according to the user does on control panel selection and carry out corresponding operation.
Below in conjunction with the pick-up unit of accompanying drawing description according to the controller for detection of refrigerator of the embodiment of the present invention.
As shown in Figure 1, show the schematic diagram that the pick-up unit of the controller for detection of refrigerator of one embodiment of the invention is connected with controller.Comprise a plurality of load (not shown)s and frock check-out console 130 according to the pick-up unit of the controller for detection of refrigerator of the embodiment of the present invention.
Frock check-out console 130 has a plurality of load access terminals and a plurality of load lead-out terminal, and wherein, described a plurality of load access terminals are corresponding one by one with a plurality of load lead-out terminals.
in the time need to detecting the controller 120 of refrigerator, the control panel of above-mentioned refrigerator 110 and controller 120 are communicated to connect, and at least a portion of a plurality of load access terminals of frock check-out console 130 is connected with controller 120, and the load lead-out terminal that at least a portion in a plurality of loads is corresponding with the load access terminal of access controller 120 connects, when the user starts shooting and shuts down according to the control mode of control program by the predefined control program of controller 120 is controlled the load that is connected with described load lead-out terminal after selecting measuring ability on control panel 110.
Generally, at first control panel 110 and controller 120 are communicated to connect, load incoming end sub-connection with being used on controller 120 with load output interface with the frock check-out console 130 of above-described embodiment of refrigerator, connect the man-to-man connected mode of employing.There is a corresponding with it load lead-out terminal in each load access terminal on frock check-out console 130, and with above-mentioned load lead-out terminal respectively with above-described embodiment in a plurality of loads at least a portion be connected, thus, realize the control of 120 pairs of a plurality of loads of controller.
With reference to figure 1, in one embodiment of the invention, a plurality of load incoming end attached bags of frock check-out console 130 are drawn together the first load access terminal 131, the second load access terminal 132, the 3rd load access terminal 133 and the 4th load access terminal 134, and a plurality of load lead-out terminals comprise the first load lead-out terminal 135, the second load lead-out terminal 136, the 3rd load lead-out terminal 137 and the 4th load lead-out terminal 138.Wherein, the first load access terminal 131 to the 4th load access terminals 134 are corresponding one by one with the first load lead-out terminal 135-the 4th load lead-out terminal 138 respectively.
hold intelligibly, comprise a plurality of load output interfaces on controller 120, each interface is connected with the load of refrigerator respectively, in order to realize the control to the refrigerator load, as in an example of the present invention, the load of refrigerator comprises the compressor of refrigerator, defrosting heater, air door and ice machine, so, controller 120 comprises four load output interfaces at least, with reference to figure 1, as in an example of the present invention, controller 120 comprises the first load output interface 121, the second load output interface 122, the 3rd load output interface 123 and the 4th load output interface 124.So that in the refrigerator normal course of operation, the first load output interface 121 of controller 120, the second load output interface 122, the 3rd load output interface 123 and the 4th load output interface 124 respectively with the operation of compressor, defrosting heater, air door and the ice machine of controlling refrigerator.
Therefore,, if whether need to detect the control circuit of simultaneously compressor, defrosting heater, air door and the ice machine of refrigerator being controlled on controller 120 normal, the first load output interface 121 of controller 120, the second load output interface 122, the 3rd load output interface 123 and the 4th load output interface 124 can be connected with the first load access terminal 131, the second load access terminal 132, the 3rd load access terminal 133 and the 4th load access terminal 134 on frock check-out console 130 respectively one to one.Then with the first load lead-out terminal 135 on frock check-out console 130, the second load lead-out terminal 136, the 3rd load lead-out terminal 137 and the 4th load lead-out terminal 138 respectively with a plurality of loads in four be connected, in order to guarantee the degree of accuracy that detects, as in an enforcement of the present invention, being connected to four loads on the first load lead-out terminal 135 to the 4th load lead-out terminals 138 can be for the first illuminating lamp, the second illuminating lamp, be used for the air door of refrigerator and be used for the ice machine of refrigerator.
Easily understand, compressor and defrosting heater etc. are low to the susceptibility of time, therefore adopt illuminating lamp to substitute, like this, after energising, illuminating lamp can be lighted rapidly, can judge thus the control circuit that is used for control compressor and defrosting heater on controller 120 normal.
In the above-described embodiments, in controller 120, the control mode of default control program is closed for controlling after the load that is connected with the load lead-out terminal in turn started for first schedule time.Namely control respectively the first illuminating lamp, the second illuminating lamp, be used for the air door of refrigerator and for the ice machine of refrigerator, close after the startup very first time.In this embodiment, the very first time is as at 2-5 between second.When being chosen as 2 seconds, its course of work is as follows:
The first bright 2s of illuminating lamp, stop 2s; The second bright 2s of illuminating lamp, stop 2s; The air door that is used for refrigerator is opened 2s, stops 2s; The ice machine that is used for refrigerator starts ice making 2s, stops 2s.Like this, can observe intuitively the first bright 2s of illuminating lamp, the 2s that goes out, the second bright 2s of illuminating lamp, the air door that stop 2s, is used for refrigerator is opened 2s, and the ice machine that stop 2s, is used for refrigerator starts ice making 2s, stops 2s.
Thus, pass successively after starting 2 seconds when observing four loads this step of closing 2 seconds and circulated, can judge the control circuit of on controller 120, compressor, defrosting heater, air door and the ice machine of refrigerator being controlled all normal,, if at least one in four loads opens and closes not according to above-mentioned control mode, can judge the corresponding control circuit existing problems of on controller 120, compressor, defrosting heater, air door and the ice machine of refrigerator being controlled.
As shown in Figure 2, simultaneously with reference to figure 1, in one embodiment of the invention, for example set when refrigerator was switched on 3 seconds in 1 (the solution locking key) if the user pushes button, control panel 110 is defaulted as and has selected measuring ability, like this, can aspect to the detection of controller 120, after the refrigerator assembling is completed, controller 120 need not be taken out from refrigerator, only need the corresponding port of controller is connected on frock check-out console 130 and gets final product.Also help like this maintenance to the refrigerator later stage.
Certainly, only show in above-described embodiment and can detect simultaneously the example of controlling a frock check-out console 130 of four loads on controller 120,, by add more load input terminal and load lead-out terminal on frock check-out console 130, can detect simultaneously the control circuit of controlling more load on controller 120.These, those of ordinary skill in the art can expand as required, and the frock check-out console 130 of the embodiment of the present invention is for the not restriction of quantity of load input terminal that adds and load lead-out terminal.
Pick-up unit according to the embodiment of the present invention, connect the interface of refrigerator load and the load incoming end sub-connection of frock check-out console by each of the controller with refrigerator, and by the load lead-out terminal of frock check-out console, connect upper a plurality of loads, whether normally can detect simultaneously the whole load runnings of controller control refrigerator, therefore, save a large amount of detection times, and avoided undetected to each load control circuit of controller.And a plurality of loads can have been saved the cost of pick-up unit with such as illuminating lamp etc., detecting, ultimate guarantee the product quality that comes into the market of refrigerator.Promoted the quality of refrigerator.
In conjunction with Fig. 1, the detection system of the embodiment of the present invention comprises control panel 110, controller 120 and pick-up unit 130.
In conjunction with Fig. 2, control panel comprises unlock key (button 1), wherein, unlock key as described in the very first time section after described refrigerator is started to switch on, press (in as 3 seconds), described control panel 110 is controlled described refrigerator and is entered detected state so that described controller 120 is detected.
In the above-described embodiments, after refrigerator entered detected state, 110 pairs of described controllers 120 of control panel sent and detect control signal, and described controller 120 is carried out the interior predefined control program of described controller 120 according to described detection control signal.Advantageously, described control program for example cut off the power supply for the second time for controlling after a plurality of of described controller 120 and terminal that described refrigerator load is connected are carried out N the very first time of alternately switching on to the external world.In one embodiment of the invention, N is 10-15 time, thus, is convenient to observe, and improves accuracy of detection.
More advantageously, according to the above embodiments, if observe after first to fourth load of described pick-up unit 130 all alternately starts the described very first time and closed for the second time, judge that described controller is normal, otherwise according to not abnormal according to the corresponding control circuit of the described controller of load judgment of described control program control executive mode operation in first to fourth load.In one embodiment of the invention, the second time was similarly 2 seconds as being 2 seconds the very first time.
Need explanation, the pick-up unit 130 that passes through of the pick-up unit 130 in said detecting system judges whether normal principle elaborates controller 120 in above-mentioned first aspect embodiment, and therefore not to repeat here.
That the detection system of the embodiment of the present invention has is fast to the refrigerator controller detection speed, detect comprehensively, detect advantage accurately.And this system is simple, and cost is low.
In the description of this instructions, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that do not break away from principle of the present invention and aim can be carried out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is by claim and be equal to and limit.
Claims (11)
1. pick-up unit for detection of the controller of refrigerator, described refrigerator comprises control panel and coupled controller, and wherein, the user is by selecting predetermined function to control the operation of described refrigerator load by described controller on control panel, it is characterized in that, comprising:
A plurality of loads; With
The frock check-out console, described frock check-out console has a plurality of load access terminals and a plurality of load lead-out terminal, wherein, described a plurality of load access terminal is corresponding one by one with a plurality of load lead-out terminals, in the time need to detecting the controller of described refrigerator, at least a portion of a plurality of load access terminals of described frock check-out console is connected with described controller, and the load lead-out terminal that at least a portion in a plurality of loads is corresponding with the load access terminal of the described controller of access connects
Wherein, start shooting and shut down according to the control mode of described control program by the predefined control program of described controller is controlled the load that is connected with described load lead-out terminal after selecting measuring ability on control panel as the user.
2. pick-up unit according to claim 1, is characterized in that, the control mode of described control program is closed for controlling after the load that is connected with described load lead-out terminal in turn started for first schedule time.
3. pick-up unit according to claim 2, it is characterized in that, the described load that is connected with the load lead-out terminal comprises first to fourth load, wherein said the first load and the second load are illuminating lamp, described the 3rd load is for being used for the air door of refrigerator, described the 4th load is for being used for the ice machine of refrigerator
Wherein, if observe after described first to fourth load in turn started for first schedule time according to the control mode of described control program, close, judge that described controller is normal, otherwise judge that described controller is abnormal.
4. pick-up unit according to claim 3, it is characterized in that, a plurality of load incoming end attached bags of described frock check-out console are drawn together first to fourth load access terminal, described a plurality of load lead-out terminal comprises first to fourth load lead-out terminal, wherein, described first to fourth load access terminal is corresponding one by one with described first to fourth load lead-out terminal respectively, when the controller to described refrigerator detects, first to fourth load output interface of described controller is connected with described first to fourth load access terminal successively, described first to fourth load lead-out terminal is connected with described first to fourth load respectively.
5. according to claim 1-4 described pick-up units of any one, it is characterized in that, in described refrigerator normal course of operation, first to fourth load output interface of described controller is connected to control respectively the operation of described compressor, defrosting heater, air door and ice machine with compressor, defrosting heater, air door and the ice machine of described refrigerator.
6. pick-up unit according to claim 2, is characterized in that, described first schedule time is 2-5 second.
7. the detection system for detection of the controller of refrigerator, is characterized in that, comprising:
Control panel, described control panel be arranged on refrigerator the door body outside surface on;
Controller, described controller are connected with described control panel and are used for controlling the operation of a plurality of loads of described refrigerator under described refrigerator normal operating conditions;
Pick-up unit, described pick-up unit is the pick-up unit of the controller for detection of refrigerator as described in claim 1-6 any one, described pick-up unit is connected with described controller when described refrigerator enters detected state, wherein said controller is controlled described pick-up unit according to predefined control program a plurality of loads move so that described controller is detected according to the control mode of described control program.
8. the detection system of the controller for detection of refrigerator according to claim 7, it is characterized in that, described control panel comprises unlock key, wherein, press described unlock key in very first time section after described refrigerator is started to switch on, described control panel is controlled described refrigerator and is entered detected state so that described controller is detected.
9. the detection system of the controller for detection of refrigerator according to claim 8, it is characterized in that, after described refrigerator enters detected state, described control panel sends and detects control signal described controller, and described controller is carried out predefined control program in described controller according to described detection control signal.
10. the detection system of the controller for detection of refrigerator according to claim 9, it is characterized in that, described control program cut off the power supply for the second time for controlling after a plurality of of described controller and terminal that described refrigerator load is connected are carried out N the very first time of alternately switching on to the external world.
11. the detection system of the controller for detection of refrigerator according to claim 10, it is characterized in that, described N is 10-15 time, if wherein observe after first to fourth load of described pick-up unit all alternately starts the described very first time and closed for the second time, judge that described controller is normal, otherwise according to not abnormal according to the corresponding control circuit of the described controller of load judgment of described control program control executive mode operation in first to fourth load.
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| CN2011103104494A CN102508482B (en) | 2011-10-13 | 2011-10-13 | Detection device and system for detecting controller of refrigerator |
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| CN2011103104494A CN102508482B (en) | 2011-10-13 | 2011-10-13 | Detection device and system for detecting controller of refrigerator |
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| CN102508482B true CN102508482B (en) | 2013-11-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103018498A (en) * | 2012-12-25 | 2013-04-03 | 镇江市松协电器有限公司 | Refrigerator air door detecting table |
| CN103163879B (en) * | 2013-03-22 | 2015-07-15 | 四川长虹电器股份有限公司 | Detection method for reliability test of refrigerator controller |
| CN105739487B (en) * | 2016-03-31 | 2018-10-12 | 青岛海尔股份有限公司 | The three terminal temperature controller detection methods and tooling of mechanical refrigerator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003294353A (en) * | 2002-03-29 | 2003-10-15 | Sanyo Electric Co Ltd | Cold heat supply system |
| CN101261070A (en) * | 2007-03-05 | 2008-09-10 | 泰州乐金电子冷机有限公司 | Refrigerator controller |
| CN201689340U (en) * | 2010-05-27 | 2010-12-29 | 无锡和晶科技股份有限公司 | 160B refrigerator controller service life testing circuit |
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2011
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003294353A (en) * | 2002-03-29 | 2003-10-15 | Sanyo Electric Co Ltd | Cold heat supply system |
| CN101261070A (en) * | 2007-03-05 | 2008-09-10 | 泰州乐金电子冷机有限公司 | Refrigerator controller |
| CN201689340U (en) * | 2010-05-27 | 2010-12-29 | 无锡和晶科技股份有限公司 | 160B refrigerator controller service life testing circuit |
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Address after: 230601 Hefei Changjiang Road, Anhui, No. 669 Applicant after: Hefei Midea Refrigerator Co., Ltd. Applicant after: Hefei Hualing Co., Ltd. Address before: 230601 Hefei Changjiang Road, Anhui, No. 669 Applicant before: Hefei Media Rongshida Refrigerator Co., Ltd. Applicant before: Hefei Hualing Co., Ltd. |
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