CN102937356B - 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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- CN102937356B CN102937356B CN201210506517.9A CN201210506517A CN102937356B CN 102937356 B CN102937356 B CN 102937356B CN 201210506517 A CN201210506517 A CN 201210506517A CN 102937356 B CN102937356 B CN 102937356B
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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. The invention also discloses a refrigerator.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, particularly a kind of MOD drive unit and there is its refrigerator.
Background technology
At present, some refrigerator many employings air doors control compartment temperature, namely refrigerator MOD role is for control certain compartment temperature by the opening and closing of MOD, when this compartment temperature is too high, MOD is opened, cold wind introduces this room by another room, and the temperature of controlled room is reduced; When the temperature of controlled room reaches setting value and stablizes, air door is closed.
As shown in Figure 1, main control chip exports four tunnel control signals to driving chip to the driving circuit principle of existing MOD, driving chip receive and inverted signal be can Driving Stepping Motor rotate voltage to stepper motor.
But the driving of MOD circuit of the prior art is opened loop control, cannot differentiate MOD whether action, whether action is normal.If run into circuit or driving chip fault, controlled room then cannot normally work.
Summary of the invention
The present invention is intended at least one of solve the problems of the technologies described above.
For this reason, one object of the present invention be to propose a kind of can the working condition of monitor driver in real time, whether normally thus can detect MOD whether action and action MOD drive unit, reliability is high and stability is 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 proposes a kind of MOD drive unit, comprising: motor; Driver, described driver is connected with described motor, for driving described motor; Sampling module, described sampling module is connected between described motor and described driver; Controller, described controller is connected with described sampling module with described driver respectively, described controller generates multiple control signal, wherein, each in described multiple control signal changes according to predetermined period, described controller judges whether the change of the voltage of described sampling module collection meets described predetermined period, and when the change of the voltage judging described sampling module collection does not meet described predetermined period, judges that described motor breaks down.
MOD drive unit according to the embodiment of the present invention adopts close-loop control mode, can the working condition of monitor driver and whether fault in real time, thus MOD whether action and the whether normal MOD drive unit of action can be detected, there is the advantage that reliability is high and stability is strong.
In addition, MOD drive unit according to the above embodiment of the present invention can also have following additional technical characteristic:
In an embodiment of the present invention, described multiple control signal is four control signals, and described driver generates four corresponding drive singal 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, and described first to fourth resistance is 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 one resistance in described first to fourth resistance, and the output of described amplifier is connected with described controller.
The embodiment of second aspect present invention proposes a kind of refrigerator, comprising: MOD drive unit described in above-described embodiment.
According to refrigerator of the present invention, the MOD drive unit of this refrigerator adopts close-loop control mode, can the working condition of monitor driver and whether fault in real time, thus MOD whether action and the whether normal MOD drive unit of action can be detected, there is the advantage that reliability is high and stability is strong, thus make user or maintenance personal can judge the duty that MOD is current to improve the stability of refrigerator complete machine according to the feedback signal of circuit.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, 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.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction 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, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
With reference to description below and accompanying drawing, these and other aspects of embodiments of the invention will be known.Describe at these and in accompanying drawing, specifically disclose some particular implementation in embodiments of the invention, representing some modes of the principle implementing embodiments of the invention, but should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise fall into attached claims spirit and intension within the scope of all changes, amendment and equivalent.
Below with reference to the accompanying drawings MOD drive unit and the refrigerator of embodiment are according to a first aspect of the present invention described.
As shown in Figure 2, MOD drive unit according to an embodiment of the invention, comprising: motor 110, driver 120, sampling module 130 and controller 140.
Driver 120 is connected with motor 110, for drive motors 110.Sampling module 130 is connected between motor 110 and driver 120.Controller 140 is connected with sampling module 130 with driver 120 respectively, controller 140 generates multiple control signal, wherein, each in multiple control signal changes according to predetermined period, controller 140 judges whether the change of the voltage that sampling module 130 gathers meets predetermined period, and when judging that the change of the voltage that sampling module 130 gathers does not meet predetermined period, judge that motor 110 breaks down.Wherein, predetermined period can preset according to the method for operation of motor 110.
The method of operation of motor 110 can be four phase four bats.Namely motor 110 output voltage is clapped as one-period circulation change with four, completes magnetic field cyclically-varying with this.In other words, the predetermined period of the voltage change of acquisition module 130 collection can be clapped as one-period with four.Further, multiple control signal is four control signals, and driver 120 generates four corresponding drive singal 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, is respectively R1, R2, R3 and R4, and R1 to R4 is connected on four connecting lines.Wherein, R1, R2, R3 and R4 resistance can set as required, can be, but not limited to as same resistance.
Further, sampling module 130 also comprises: amplifier 131, and the first input end of amplifier 131 and the second input are connected to the two ends of any one resistance in first to fourth resistance (i.e. R1 to R4), and the output of amplifier 131 is connected with controller 140.Thus, realize the closed-loop control to MOD, improve stability.
Specifically, composition graphs 2, the first input end of amplifier 131 and the second input are connected to the two ends of the first resistance R1, and the output of amplifier 131 is connected with controller 140.The output of amplifier 131 is as feedback signal FB access controller 140.Wherein, the first resistance R1 connected between the first input end and the second input of amplifier 131 can change the second resistance R2 into any one resistance in resistance R4.
Thus, acquisition module is changed by the loop cycle gathering the resistance both end voltage be connected with amplifier 131, and amplified by amplifier 131, to make controller 140 judge the working condition of motor 110 by the feedback signal FB of amplifier 131 output, thus improve MOD security in use and stability.
Below in conjunction with Fig. 2, the principle according to MOD drive unit of the present invention is described:
Driver 120 to four circuits of motor 110 is connected in series a small resistor respectively, i.e. R1 to R4, R1 two ends lead-in wire access amplifier 131, the output of amplifier 131 is as feedback signal FB access controller 140.Specifically, the method for operation of motor 110 is four phase four bats, and namely motor 110 output voltage is clapped as one-period circulation change with four, completes magnetic field cyclically-varying with this.
When motor 110 works, controller 140 provides four road drive singal successively, motor 110 Nei tetra-road winding is energized successively, thus complete with four bats as one-period magnetic field circulation change, first resistance R1 is connected in series with motor 110, and therefore the voltage at R1 two ends is clapped as one-period circulation change with four equally.First resistance R1 two ends lead-in wire connects with amplifier 131, with the differential voltage signal making amplifier 131 amplify the first resistance R1 two ends, and is collected by the controller 140 be connected with amplifier 131 output.If circuit malfunctions, namely motor 110 rotor cannot normal rotation time, the change of four road electric currents is acyclic, now, the differential voltage change at the first resistance R1 two ends is also acyclic, therefore by judging that the periodicity of voltage signal collected can judge motor 110 whether fault.Particularly, if the differential voltage signal collecting the first resistance R1 two ends is one-period circulation change with four bats, now, controller 140 judges that motor 110 works well.If the differential voltage signal collecting the first resistance R1 two ends is not clapped as one-period circulation change with four, so this Time Controller 140 judges circuit or driver 120 fault, and is correspondingly processed.
Whether can be the working condition that loop cycle change judges motor by what judge the voltage of sampling module collection by controller according to the MOD drive unit of the embodiment of the present invention, and then realize the working condition of the motor monitoring MOD in real time, Timeliness coverage fault, avoid the loss that failure problems is brought, and then improve MOD security in use and stability.
Further embodiment of the present invention proposes a kind of refrigerator.Shown in composition graphs 2, this refrigerator comprises: the MOD drive unit of above-described embodiment.Wherein, MOD control device, as shown in Figure 2, comprising: motor 110, driver 120, sampling module 130 and controller 140.Driver 120 is connected with motor 110, for drive motors 110.Sampling module 130 is connected between motor 110 and driver 120.Sampling module 130 comprises: first to fourth resistance, is respectively R1, R2, R3 and R4, and R1 to R4 is connected on four connecting lines.Sampling module 130 also comprises: amplifier 131, and the first input end of amplifier 131 and the second input are connected to the two ends of any one resistance in first to fourth resistance (i.e. R1 to R4), and the output of amplifier 131 is connected with controller 140.The first input end of amplifier 131 and the second input are connected to the two ends of the first resistance R1, and the output of amplifier 131 is connected with controller 140.Specifically, the output of amplifier 131 is as feedback signal FB access controller 140.Controller 140 is connected with sampling module 130 with driver 120 respectively, controller 140 generates multiple control signal, wherein, each in multiple control signal changes according to predetermined period, controller 140 judges whether the change of the voltage that sampling module 130 gathers meets predetermined period, and when judging that the change of the voltage that sampling module 130 gathers does not meet predetermined period, judge that motor 110 breaks down.Particularly, multiple control signal is four control signals, and driver 120 generates four corresponding drive singal to pass through four connecting line drive motors 110 according to four control signals.
Be provided with multiple rooms in refrigerator, be provided with multiple temperature storage district in each room, there is a wind passage mouth in each temperature storage district.Refrigerator controls the wind passage mouth that MOD opens or closes temperature storage district, place, carries out cooling process with room between this pair.When the temperature of a room is too high, need to open air door, now MOD drive unit is started working, and controller 140 collects the voltage cycle change at resistance two ends in acquisition module 130 by the feedback signal of amplifier 131, monitors the working condition of motor 110 with this in real time.If the differential voltage signal collecting resistance two ends is not clapped as one-period circulation change with four, so this Time Controller 140 judges circuit or driver 120 fault, and is correspondingly processed.If the differential voltage signal collecting resistance two ends is one-period circulation change with four bats, now, controller 140 judges that motor 110 works well.
Thus, according to the refrigerator of the embodiment of the present 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, thus improves security and the stability of refrigerator complete machine.
In addition, according to the refrigerator of the embodiment of the present invention other form and effect be all known for a person skilled in the art, do not describe herein.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalency thereof.
Claims (5)
1. a MOD drive unit, is characterized in that, comprising:
Motor;
Driver, described driver is connected with described motor, for driving described motor;
Sampling module, described sampling module is connected between described motor and described driver;
Controller, described controller is connected with described sampling module with described driver respectively, described controller generates multiple control signal, wherein, each in described multiple control signal changes according to predetermined period, described controller judges whether the change of the voltage of described sampling module collection meets described predetermined period, and when the change of the voltage judging described sampling module collection does not meet described predetermined period, judges that described motor breaks down.
2. MOD drive unit as claimed in claim 1, it is characterized in that, described multiple control signal is four control signals, and described driver generates four corresponding drive singal 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, it is characterized in that, described sampling module comprises:
First to fourth resistance, described first to fourth resistance is connected on described four connecting lines.
4. MOD drive unit as claimed in claim 1 or 2, 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 one resistance in described first to fourth resistance, and the output of described amplifier is connected with described controller.
5. a refrigerator, is characterized in that, comprises the MOD drive unit as described in any one of 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 |
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| Publication Number | Publication Date |
|---|---|
| CN102937356A CN102937356A (en) | 2013-02-20 |
| CN102937356B true 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 (9)
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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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090007576A1 (en) * | 2007-07-05 | 2009-01-08 | Boissinot Frederic J | Methods and Systems for a Torque-Based Air Conditioning Cut-Out Control |
-
2012
- 2012-11-30 CN CN201210506517.9A patent/CN102937356B/en active Active
Patent Citations (9)
| 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 |
| 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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| CN102937356A (en) | 2013-02-20 |
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| C53 | Correction of patent for 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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