CN102937356A - Driving device of electric air door and water tank provided with driving device - Google Patents
Driving device of electric air door and water tank provided with driving device Download PDFInfo
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- CN102937356A CN102937356A CN2012105065179A CN201210506517A CN102937356A CN 102937356 A CN102937356 A CN 102937356A CN 2012105065179 A CN2012105065179 A CN 2012105065179A CN 201210506517 A CN201210506517 A CN 201210506517A CN 102937356 A CN102937356 A CN 102937356A
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- motor
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- driver
- controller
- driving device
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Abstract
The invention provides a driving device of an electric air door. The driving device comprises a motor, a driver, a sampling module and a controller, wherein the driver is connected with the motor and is used for driving the motor; the sampling module is connected between the motor and the driver; the controller is connected with the driver and the sampling module respectively and generates a plurality of control signals; each control signal is changed according to a preset period; and the controller is used for judging that whether the voltage change acquired by the sampling module meets the preset period or not and judging the fault of the motor when the voltage change acquired by the sampling module does not meet the preset period. The driving device provided by the embodiment of the invention has the beneficial effects that the working condition of the driver can be monitored in real time by adopting a closed-loop control mode, so that whether the electric air door acts or not and whether the action is normal or not can be detected. The driving device has the advantages of high reliability and strong stability.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, particularly a kind of MOD drive unit and have its refrigerator.
Background technology
At present, some refrigerators adopt air door that compartment temperature is controlled more, be that refrigerator MOD role is that switching by MOD is for to control certain compartment temperature, when this compartment temperature is too high, MOD is opened, cold wind is introduced this chamber by another chamber, so that the temperature of controlled chamber reduces; When the temperature of controlled chamber reaches setting value and when stable, air door is closed.
The driving circuit principle of existing MOD as shown in Figure 1, main control chip is exported four tunnel control signals to driving chip, drive that chip receives and inverted signal be can the Driving Stepping Motor rotation voltage to stepper motor.
Yet whether whether the driving of MOD circuit of the prior art is open loop control, can't differentiate MOD and move, move normal.If run into circuit or drive failure of chip, controlled chamber then can't work.
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, but one object of the present invention is to propose a kind of working condition of Real Time Monitoring driver, whether whether moves and move normal MOD drive unit thereby can detect MOD, and reliability is high and stable strong.
Another object of the present invention is to propose a kind of refrigerator.
To achieve these goals, the embodiment of first aspect present invention has proposed a kind of MOD drive unit, comprising: motor; Driver, described driver links to each other with described motor, is used for driving described motor; Sampling module, described sampling module are connected between described motor and the described driver; Controller, described controller links to each other with described sampling module with described driver respectively, described controller generates a plurality of control signals, wherein, in described a plurality of control signal each changes according to predetermined period, described controller judges whether the variation of the voltage of described sampling module collection satisfies described predetermined period, and when the variation of the voltage of judging described sampling module collection is not satisfied described predetermined period, judges that described motor breaks down.
MOD drive unit according to the embodiment of the invention adopts close-loop control mode, but the working condition of Real Time Monitoring driver and fault whether, thereby can detect MOD and whether whether move and move normal MOD drive unit, have advantages of that reliability is high and stable strong.
In addition, MOD drive unit according to the above embodiment of the present invention can also have following additional technical characterictic:
In an embodiment of the present invention, described a plurality of control signals are four control signals, and described driver generates four corresponding driving signals to drive described motor by four connecting lines according to described four control signals.
In an embodiment of the present invention, described sampling module comprises: first to fourth resistance, described first to fourth resistance are connected on described four connecting lines.
In an embodiment of the present invention, described sampling module also comprises: amplifier, the first input end of described amplifier and the second input are connected to the two ends of any resistance in described first to fourth resistance, and the output of described amplifier links to each other with described controller.
The embodiment of second aspect present invention proposes a kind of refrigerator, comprising: the described MOD drive unit of above-described embodiment.
According to refrigerator of the present invention, the MOD drive unit of this refrigerator adopts close-loop control mode, but the working condition of Real Time Monitoring driver and fault whether, thereby can detect MOD and whether whether move and move normal MOD drive unit, have advantages of that reliability is high and stable strong, thereby so that user or maintenance personal can judge the duty that MOD is present according to the feedback signal of circuit, improved the stability of refrigerator complete machine.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
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 of prior art MOD drive circuit; And
Fig. 2 is the schematic diagram of MOD drive unit according to an embodiment of the invention.
The specific embodiment
The below describes embodiments of the invention in detail, and 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 be for convenience of description the present invention 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 clear and definite regulation and restriction are arranged in addition, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be to be fixedly connected with, and also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can indirectly link to each other 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.
With reference to following description and accompanying drawing, these and other aspects of embodiments of the invention will be known.These describe and accompanying drawing in, specifically disclose some specific implementations in the embodiments of the invention, represent to implement some modes of the principle of embodiments of the invention, still should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise spirit and interior all changes, modification and the equivalent of intension scope that falls into additional claims.
Below with reference to MOD drive unit and the refrigerator of accompanying drawing description according to first aspect present invention embodiment.
As shown in Figure 2, the MOD drive unit comprises: motor 110, driver 120, sampling module 130 and controller 140 according to an embodiment of the invention.
The method of operation of motor 110 can four be clapped mutually for four.Be motor 110 output voltages take four bats as the one-period circulation change, finish the magnetic field cyclically-varying with this.In other words, the predetermined period of the voltage change of acquisition module 130 collections can be clapped as one-period take four.Further, a plurality of control signals are four control signals, and driver 120 generates four corresponding driving signals to pass through four connecting line drive motors 110 according to four control signals, and connecting line is wire.
In an embodiment of the present invention, sampling module 130 comprises: first to fourth resistance, be respectively R1, R2, R3 and R4, and R1 to R4 is connected on four connecting lines.Wherein, R1, R2, R3 and R4 resistance can be set as required, can but be not limited to same resistance.
Further, sampling module 130 also comprises: amplifier 131, the first input end of amplifier 131 and the second input are connected to the two ends of any resistance in first to fourth resistance (being R1 to R4), and the output of amplifier 131 links to each other with controller 140.Thus, realize the closed-loop control to MOD, improve stability.
Particularly, in conjunction with Fig. 2, the first input end of amplifier 131 and the second input are connected to the two ends of the first resistance R 1, and the output of amplifier 131 links to each other with controller 140.The output of amplifier 131 is as feedback signal FB access controller 140.Wherein, the first resistance R 1 that connects between the first input end of amplifier 131 and the second input can change the second resistance R 2 any resistance to the resistance R 4 into.
Thus, acquisition module changes by the loop cycle that gathers the resistance both end voltage that is connected with amplifier 131, and by amplifier 131 amplifications, so that controller 140 is judged the working condition of motor 110 by the feedback signal FB of amplifier 131 outputs, thereby MOD security in use and stability have been improved.
Below in conjunction with Fig. 2 principle according to MOD drive unit of the present invention is described:
When motor 110 work, controller 140 provides successively four the road and drives signal, four road windings in the motor 110 are switched on successively, thereby finish take four bats as one-period magnetic field circulation change, the first resistance R 1 is connected in series with motor 110, so the voltage at R1 two ends is clapped as the one-period circulation change take four equally.The first resistance R 1 two ends lead-in wire joins with amplifier 131, so that amplifier 131 amplifies the differential voltage signal at the first resistance R 1 two ends, and is collected by the controller 140 that links to each other with amplifier 131 outputs.If circuit breaks down, be that the rotor of motor 110 is can't normal rotation the time, the variation of four road electric currents is acyclic, at this moment, it also is acyclic that the differential voltage at the first resistance R 1 two ends changes, and the periodicity of the voltage signal that therefore collects by judgement can be judged whether fault of motor 110.Particularly, if the differential voltage signal that collects the first resistance R 1 two ends take four bats as the one-period circulation change, at this moment, controller 140 judges that motors 110 work well.If collect the differential voltage signal at the first resistance R 1 two ends not take four bats as the one-period circulation change, this Time Controller 140 is judged circuit or driver 120 faults so, and is correspondingly processed.
According to the MOD drive unit of the embodiment of the invention can be by the voltage of controller by judging the sampling module collection whether be that loop cycle changes the working condition of judging motor, and then the working condition of the motor of realization Real Time Monitoring MOD, in time find fault, the loss of avoiding failure problems to bring, and then improve MOD security in use and stability.
Further embodiment of the present invention has proposed a kind of refrigerator.In conjunction with shown in Figure 2, this refrigerator comprises: the MOD drive unit of above-described embodiment.Wherein, the MOD control device as shown in Figure 2, comprising: motor 110, driver 120, sampling module 130 and controller 140.Driver 120 links to each other with motor 110, is used for drive motors 110.Sampling module 130 is connected between motor 110 and the driver 120.Sampling module 130 comprises: first to fourth resistance, be respectively R1, R2, R3 and R4, and R1 to R4 is connected on four connecting lines.Sampling module 130 also comprises: amplifier 131, the first input end of amplifier 131 and the second input are connected to the two ends of any resistance in first to fourth resistance (being R1 to R4), and the output of amplifier 131 links to each other with controller 140.The first input end of amplifier 131 and the second input are connected to the two ends of the first resistance R 1, and the output of amplifier 131 links to each other with controller 140.Particularly, the output of amplifier 131 is as feedback signal FB access controller 140.Controller 140 links to each other with sampling module 130 with driver 120 respectively, controller 140 generates a plurality of control signals, wherein, in a plurality of control signals each changes according to predetermined period, controller 140 judges whether the variation of the voltage that sampling module 130 gathers satisfies predetermined period, and when the variation of judging the voltage that sampling module 130 gathers is not satisfied predetermined period, judge that motor 110 breaks down.Particularly, a plurality of control signals are four control signals, and driver 120 generates four corresponding driving signals to pass through four connecting line drive motors 110 according to four control signals.
Be provided with a plurality of chambers in the refrigerator, be provided with a plurality of temperature storages district in each chamber, there is a wind passage mouth in each temperature storage district.Refrigerator control MOD opens or closes the wind passage mouth in temperature storage district, place, with this to the chamber processing of lowering the temperature.When the excess Temperature of a chamber, need to open air door, this moment, the MOD drive unit was started working, and controller 140 collects the voltage cycle variation at resistance two ends in the acquisition module 130 by the feedback signal of amplifier 131, with the working condition of this Real Time Monitoring motor 110.If collect the differential voltage signal at resistance two ends not take four bats as the one-period circulation change, this Time Controller 140 is judged circuit or driver 120 faults so, and is correspondingly processed.If the differential voltage signal that collects the resistance two ends is take four bats as the one-period circulation change, at this moment, controller 140 judges that motors 110 work well.
Thus, refrigerator according to the embodiment of the invention, the door driving device of this refrigerator adopts closed-loop control, makes user or maintenance personal can judge according to the feedback signal FB of circuit the duty that MOD is current, thereby has improved the security and stability of refrigerator complete machine.
In addition, all be known for a person skilled in the art according to other formation and the effect of the refrigerator of the embodiment of the invention, do not do description herein.
In the description of this specification, 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 the 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 (5)
1. a MOD drive unit is characterized in that, comprising:
Motor;
Driver, described driver links to each other with described motor, is used for driving described motor;
Sampling module, described sampling module are connected between described motor and the described driver;
Controller, described controller links to each other with described sampling module with described driver respectively, described controller generates a plurality of control signals, wherein, in described a plurality of control signal each changes according to predetermined period, described controller judges whether the variation of the voltage of described sampling module collection satisfies described predetermined period, and when the variation of the voltage of judging described sampling module collection is not satisfied described predetermined period, judges that described motor breaks down.
2. MOD drive unit as claimed in claim 1, it is characterized in that, described a plurality of control signal is four control signals, and described driver generates four corresponding driving signals to drive described motor by four connecting lines according to described four control signals.
3. MOD drive unit as claimed in claim 1 or 2 is characterized in that, described sampling module comprises:
First to fourth resistance, described first to fourth resistance are connected on described four connecting lines.
4. such as each described MOD drive unit of claim 1-3, it is characterized in that, described sampling module also comprises:
Amplifier, the first input end of described amplifier and the second input are connected to the two ends of any resistance in described first to fourth resistance, and the output of described amplifier links to each other with described controller.
5. a refrigerator is characterized in that, comprises each described MOD drive unit such as claim 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210506517.9A CN102937356B (en) | 2012-11-30 | 2012-11-30 | Driving device of electric air door and water tank provided with driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210506517.9A CN102937356B (en) | 2012-11-30 | 2012-11-30 | Driving device of electric air door and water tank provided with driving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102937356A true CN102937356A (en) | 2013-02-20 |
| CN102937356B CN102937356B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210506517.9A Active CN102937356B (en) | 2012-11-30 | 2012-11-30 | Driving device of electric air door and water tank provided with driving device |
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Citations (10)
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| JPS6446555A (en) * | 1987-08-12 | 1989-02-21 | Mitsubishi Electric Corp | Controller for refrigerator |
| CN1086595A (en) * | 1992-10-09 | 1994-05-11 | 株式会社三协精机制作所 | The stop detecting method of wind door of refrigerator and device thereof |
| JPH08219618A (en) * | 1995-02-13 | 1996-08-30 | Sharp Corp | Electric refrigerator |
| JPH08247603A (en) * | 1995-03-14 | 1996-09-27 | Matsushita Refrig Co Ltd | Controller for refrigerator |
| JPH11211308A (en) * | 1998-01-21 | 1999-08-06 | Fujitsu General Ltd | Control method of electric refrigerator |
| CN2551939Y (en) * | 2002-06-14 | 2003-05-21 | 海尔集团公司 | Electric throttle controller for refrigerator |
| CN1464278A (en) * | 2002-06-14 | 2003-12-31 | 海尔集团公司 | Refrigerator electric control air door control device |
| US20090007576A1 (en) * | 2007-07-05 | 2009-01-08 | Boissinot Frederic J | Methods and Systems for a Torque-Based Air Conditioning Cut-Out Control |
| CN102538381A (en) * | 2012-02-03 | 2012-07-04 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and ventilation door driving logic control device, system and method thereof |
| CN203036939U (en) * | 2012-11-30 | 2013-07-03 | 合肥美的荣事达电冰箱有限公司 | Electric air door driving device and refrigerator with same |
-
2012
- 2012-11-30 CN CN201210506517.9A patent/CN102937356B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6446555A (en) * | 1987-08-12 | 1989-02-21 | Mitsubishi Electric Corp | Controller for refrigerator |
| CN1086595A (en) * | 1992-10-09 | 1994-05-11 | 株式会社三协精机制作所 | The stop detecting method of wind door of refrigerator and device thereof |
| JPH08219618A (en) * | 1995-02-13 | 1996-08-30 | Sharp Corp | Electric refrigerator |
| JPH08247603A (en) * | 1995-03-14 | 1996-09-27 | Matsushita Refrig Co Ltd | Controller for refrigerator |
| JPH11211308A (en) * | 1998-01-21 | 1999-08-06 | Fujitsu General Ltd | Control method of electric refrigerator |
| CN2551939Y (en) * | 2002-06-14 | 2003-05-21 | 海尔集团公司 | Electric throttle controller for refrigerator |
| CN1464278A (en) * | 2002-06-14 | 2003-12-31 | 海尔集团公司 | Refrigerator electric control air door control device |
| US20090007576A1 (en) * | 2007-07-05 | 2009-01-08 | Boissinot Frederic J | Methods and Systems for a Torque-Based Air Conditioning Cut-Out Control |
| CN102538381A (en) * | 2012-02-03 | 2012-07-04 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and ventilation door driving logic control device, system and method thereof |
| CN203036939U (en) * | 2012-11-30 | 2013-07-03 | 合肥美的荣事达电冰箱有限公司 | Electric air door driving device and refrigerator with same |
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| CN102937356B (en) | 2015-06-17 |
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| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 230601 Hefei Changjiang Road, Anhui, No. 669 Applicant after: Hefei Midea Refrigerator Co., Ltd. Address before: 230601 Hefei Changjiang Road, Anhui, No. 669 Applicant before: Hefei Media Rongshida Refrigerator Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: HEFEI MEDIA RONGSHIDA REFRIGERATOR CO., LTD. TO: HEFEI MIDEA REFRIGERATORCO., LTD. |
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