CN104155607B - The detection circuit of refrigerator fan motor stall, refrigerator and its control method - Google Patents
The detection circuit of refrigerator fan motor stall, refrigerator and its control method Download PDFInfo
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- CN104155607B CN104155607B CN201410387472.7A CN201410387472A CN104155607B CN 104155607 B CN104155607 B CN 104155607B CN 201410387472 A CN201410387472 A CN 201410387472A CN 104155607 B CN104155607 B CN 104155607B
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Abstract
The invention provides a kind of detection circuit of refrigerator fan motor stall, including：Current detection circuit, the input of current detection circuit are connected to the drive circuit of refrigerator fan motor, and detection is by the electric current in refrigerator fan motor drive circuit；Amplifying circuit, the input of amplifying circuit are connected to the output end of current detection circuit, and the first voltage signal that current detection circuit is exported is amplified process, to export the second voltage signal after amplifying；Control circuit, is connected to amplifying circuit, receives the second voltage signal of amplifying circuit output, and judges whether the motor of fan of refrigerator occurs stall according to the change of second voltage signal.Correspondingly, present invention also offers a kind of refrigerator and a kind of control method of refrigerator.By the technical scheme, the current signal of fan electromotor can be detected, if fan electromotor exception stall, the control circuit of refrigerator carries out forcing defrosting control or warning after detecting abnormal feedback signal, so as to avoid the occurrence of refrigeration for refrigerator exception.
Description
Technical field
The present invention relates to refrigerator art, in particular to a kind of detection circuit of refrigerator fan motor stall, one
Plant refrigerator and a kind of control method of refrigerator.
Background technology
The fan electromotor for using on refrigerator at present cannot detect fan exception stall, or can detect that fan is extremely stifled
Turn, but correspondingly do not controlled in fan exception stall, so as to cause refrigeration for refrigerator exception, Consumer's Experience is not
It is good.
Therefore, how to detect fan exception stall and how correspondingly to be controlled in fan exception stall, become
Technical problem urgently to be resolved hurrily at present.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art or correlation technique.
For this purpose, it is an object of the present invention to proposing a kind of detection circuit of refrigerator fan motor stall.
Further object is that proposing a kind of refrigerator.
Another object of the present invention is to propose a kind of control method of refrigerator.
For achieving the above object, embodiment according to the first aspect of the invention, it is proposed that a kind of refrigerator fan motor is blocked up
The detection circuit for turning, including：Current detection circuit, the input of the current detection circuit are connected to the refrigerator fan motor
Drive circuit, detection is by the electric current in refrigerator fan motor drive circuit；Amplifying circuit, the input of the amplifying circuit
The output end of the current detection circuit is connected to, the first voltage signal that the current detection circuit is exported is amplified into place
Reason, to export the second voltage signal after amplifying；Control circuit, is connected to the amplifying circuit, receives the amplifying circuit defeated
The second voltage signal for going out, and judge whether the motor of the fan of refrigerator blocks up according to the change of the second voltage signal
Turn.
The detection circuit of refrigerator fan motor stall, detects wind by current detection circuit according to an embodiment of the invention
Electric current in fan motor, amplifies the output voltage of current detection circuit by amplifying circuit, so as to pass through to judge the change of voltage
Judge whether the motor of fan of refrigerator occurs stall.
According to one embodiment of present invention, the current detection circuit includes：Current sense resistor, the current detecting
One end of resistance is connected to the input of the motor and the amplifying circuit, the other end ground connection of the current sense resistor.
The detection circuit of refrigerator fan motor stall, can be examined using current sense resistor according to an embodiment of the invention
Electric current in measured motor, so as to be judged to the state of motor according to the electric current in motor.
According to one embodiment of present invention, also include：The amplifying circuit includes：First resistor, second resistance and fortune
Amplifier is calculated, the positive input terminal of the operational amplifier is connected to the output end of the current detection circuit, the first resistor
And the second resistance is connected in series between the output end and ground of the operational amplifier, the negative input of the operational amplifier
End is connected to the common port of the first resistor and the second resistance.
The detection circuit of refrigerator fan motor stall according to an embodiment of the invention, amplifying circuit by operational amplifier,
First resistor and second resistance composition, wherein, first resistor and second resistance determine the multiplication factor of amplifying circuit, Ke Yitong
Cross the resistance size of adjustment first resistor and second resistance to realize using different multiplication factors.
According to one embodiment of present invention, also include：Current-limiting resistance, is connected to the output end of the current detection circuit
And the input of the amplifying circuit between, the electric current into the amplifying circuit is limited.
The detection circuit of refrigerator fan motor stall, electric in current detection circuit and amplification according to an embodiment of the invention
Between road, current-limiting resistance is also associated with, when increasing so as to the electric current in motor suddenly, certain protection is played to amplifying circuit
Effect.
According to one embodiment of present invention, also include：Impedance matching resistor, is connected to the output end of the amplifying circuit
And the control circuit between, to match the impedance of the amplifying circuit and the control circuit.
The detection circuit of refrigerator fan motor stall according to an embodiment of the invention, amplifying circuit and control circuit it
Between, impedance matching resistor is connected with, so that the voltage of amplifying circuit output can be matched with control circuit.
Embodiment according to the second aspect of the invention, additionally provides a kind of refrigerator, including：It is arbitrary in above-mentioned technical proposal
The detection circuit of the refrigerator fan motor stall described in；Warning circuit, is connected to the detection of the refrigerator fan motor stall
Control circuit in circuit, when the control circuit judges that the motor occurs stall, according to the control electricity for receiving
The alarm command that road sends carries out alarm.
The detection of the refrigerator fan motor stall in refrigerator, including above-mentioned technical proposal is electric according to an embodiment of the invention
Road and warning circuit, so, when motor occurs stall, can carry out alarm, so as to avoid refrigerator from freezing extremely.
According to one embodiment of present invention, also include：Display circuit, is connected to the control circuit, in the control
When there is stall in motor described in circuit judges, the malfunction coefficient generation of the motor rotation blockage sent according to the control circuit for receiving
Code is shown.
Refrigerator, except carrying out alarm, can also show failure code according to an embodiment of the invention, so as to convenient
User knows the concrete failure of refrigerator, to take corresponding process to operate.
According to one embodiment of present invention, also include：Defrosting circuit, is connected to the control circuit, in the control
When motor described in circuit judges occurs stall, defrosting behaviour is carried out according to the defrosting order that the control circuit for receiving sends
Make.
Refrigerator according to an embodiment of the invention, the electric fan blower fan stall of refrigerator, very maximum probability have been because that ice is blocked
The blade of fan electromotor, so may solve this problem by defrost, now refrigerator carries out pressure defrosting operation, and defrost is exited
Temperature, raises 10 degree than original, it is ensured that defrost time long enough, and waste heat can melt icing at blower fan.When implement as above
After control, regularly detection failure whether can also recover, such as voltage recovers normal range (NR), illustrates that stall problem is addressed.
Embodiment according to the third aspect of the invention we, additionally provides a kind of control method of refrigerator, and the refrigerator includes
The detection circuit of refrigerator fan motor stall, display circuit, warning circuit and defrosting circuit, the detection circuit include that electric current is examined
Slowdown monitoring circuit, amplification electric current and control circuit, the control method of the refrigerator, including：The current detection circuit detects the ice
Electric current in case fan electromotor drive circuit；The first voltage signal that the current detection circuit is exported by the amplifying circuit enters
Row enhanced processing, to export the second voltage signal after amplifying；The control circuit receives the second of the amplifying circuit output
Voltage signal, and judge whether the motor of the fan of refrigerator occurs stall according to the change of the second voltage signal.
The control method of refrigerator, is detected by current detection circuit and is driven by fan electromotor according to an embodiment of the invention
Electric current in dynamic circuit, amplifies the output voltage of current detection circuit by amplifying circuit, so as to pass through to judge the change of voltage
Judge whether the motor of fan of refrigerator occurs stall.
According to one embodiment of present invention, the change according to the second voltage signal judges the fan of refrigerator
Motor whether there is stall, specifically include：Judge that whether the second voltage signal reduces after moment increase；Double
When reducing after judging the second voltage signal moment increase, judge that the motor occurs stall.
According to voltage signal change, the control method of refrigerator, judges whether motor blocks up according to an embodiment of the invention
Turn, specially judge voltage signal whether reduction after moment increase, if double or repeated detection is to this this change,
Then judge that motor occurs stall.
According to one embodiment of present invention, also include：When the control circuit judges that the motor occurs stall, institute
Stating warning circuit carries out alarm according to the alarm command that the control circuit for receiving sends.
The control method of refrigerator, when motor occurs stall, can carry out alarm according to an embodiment of the invention,
So as to avoid refrigerator from freezing extremely.
According to one embodiment of present invention, also include：When the control circuit judges that the motor occurs stall, institute
The malfunction coefficient code for stating the motor rotation blockage that display circuit is sent according to the control circuit for receiving is shown.
The control method of refrigerator, except carrying out alarm, can also show failure generation according to an embodiment of the invention
Code, so as to facilitate user to know the concrete failure of refrigerator, to take corresponding process to operate.
According to one embodiment of present invention, also include：When the control circuit judges that the motor occurs stall, institute
Stating defrosting circuit carries out defrosting operation according to the defrosting order that the control circuit for receiving sends.
The control method of refrigerator according to an embodiment of the invention, the electric fan blower fan stall of refrigerator, very maximum probability are because
There is ice to block the blade of fan electromotor, so may solve this problem by defrost, now refrigerator carries out pressure defrosting operation,
And temperature is exited in defrost, 10 degree are raised than original, it is ensured that defrost time long enough, and waste heat can melt icing at blower fan.
After implementing to be controlled as described above, regularly detection failure whether can also recover, such as voltage recovers normal range (NR), illustrates that stall problem is obtained
To solve.
The additional aspect and advantage of the present invention will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from the description with reference to accompanying drawings below to embodiment
It is substantially and easy to understand, wherein：
Fig. 1 shows the structural representation of the detection circuit of refrigerator fan motor stall according to an embodiment of the invention；
Fig. 2 shows the structural representation of refrigerator according to an embodiment of the invention；
The schematic flow diagram of Fig. 3 control methods of refrigerator according to an embodiment of the invention；
Fig. 4 shows that the circuit of the detection circuit of refrigerator fan motor stall according to an embodiment of the invention is illustrated
Figure；
Fig. 5 shows the idiographic flow schematic diagram of the control method of refrigerator according to an embodiment of the invention.
Specific embodiment
It is in order to be more clearly understood that the above objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and concrete real
Apply mode to be further described in detail the present invention.It should be noted that in the case where not conflicting, the enforcement of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description in order to fully understand the present invention, but, the present invention may be used also
Implemented with being different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment restriction.
Fig. 1 shows the structural representation of the detection circuit of refrigerator fan motor stall according to an embodiment of the invention.
As shown in figure 1, the detection circuit 100 of refrigerator fan motor stall according to an embodiment of the invention, including：Electric current
Detection circuit 102, the input of the current detection circuit 102 are connected to the drive circuit of the motor of the fan of refrigerator, examine
The electric current surveyed in the motor-drive circuit by the fan of refrigerator；Amplifying circuit 104, the input of the amplifying circuit 104
The output end of the current detection circuit 102 is connected to, the first voltage signal that the current detection circuit 102 is exported is carried out
Enhanced processing, to export the second voltage signal after amplifying；Control circuit 106, is connected to the amplifying circuit 104, receives institute
The second voltage signal of the output of amplifying circuit 104 is stated, and the fan of refrigerator is judged according to the change of the second voltage signal
Motor whether there is stall.
The detection circuit of refrigerator fan motor stall according to an embodiment of the invention, by current detection circuit detection stream
The electric current of passing through fan motor, amplifies the output voltage of current detection circuit by amplifying circuit, so as to pass through to judge the change of voltage
Change judges whether the motor of fan of refrigerator occurs stall.
According to one embodiment of present invention, the current detection circuit 102 includes：Current sense resistor, the electric current
One end of detection resistance is connected to the input of the motor and the amplifying circuit, another termination of the current sense resistor
Ground.
The detection circuit of refrigerator fan motor stall, can be examined using current sense resistor according to an embodiment of the invention
Electric current in measured motor, so as to be judged to the state of motor according to the electric current in motor.
According to one embodiment of present invention, also include：The amplifying circuit 104 includes：First resistor, second resistance and
Operational amplifier, the positive input terminal of the operational amplifier are connected to the output end of the current detection circuit, and described first is electric
Resistance and the second resistance be connected in series between the output end and ground of the operational amplifier, the operational amplifier it is negative defeated
Enter the common port that end is connected to the first resistor and the second resistance.
The detection circuit of refrigerator fan motor stall according to an embodiment of the invention, amplifying circuit by operational amplifier,
First resistor and second resistance composition, wherein, first resistor and second resistance determine the multiplication factor of amplifying circuit, Ke Yitong
Cross the resistance size of adjustment first resistor and second resistance to realize using different multiplication factors.
According to one embodiment of present invention, also include：Current-limiting resistance, is connected to the output end of the current detection circuit
And the input of the amplifying circuit between, the electric current into the amplifying circuit is limited.
The detection circuit of refrigerator fan motor stall, electric in current detection circuit and amplification according to an embodiment of the invention
Between road, current-limiting resistance is also associated with, when increasing so as to the electric current in motor suddenly, certain protection is played to amplifying circuit
Effect.
According to one embodiment of present invention, also include：Impedance matching resistor, is connected to the output end of the amplifying circuit
And the control circuit between, to match the impedance of the amplifying circuit and the control circuit.
The detection circuit of refrigerator fan motor stall according to an embodiment of the invention, amplifying circuit and control circuit it
Between, impedance matching resistor is connected with, so that the voltage of amplifying circuit output can be matched with control circuit.
Fig. 2 shows the structural representation of refrigerator according to an embodiment of the invention.
As shown in Fig. 2 refrigerator according to an embodiment of the invention, including：Ice any one of above-mentioned technical proposal
The detection circuit 100 of case fan electromotor stall；Warning circuit 202, is connected to the detection circuit of the refrigerator fan motor stall
In control circuit 106, when the control circuit judges that the motor occurs stall, according to the control circuit for receiving
The alarm command of transmission carries out alarm.
The detection of the refrigerator fan motor stall in refrigerator, including above-mentioned technical proposal is electric according to an embodiment of the invention
Road and warning circuit, so, when motor occurs stall, can carry out alarm, so as to avoid refrigerator from freezing extremely.
According to one embodiment of present invention, also include：Display circuit 204, is connected to the control circuit 106, in institute
When stating control circuit 106 and judging that the motor occurs stall, the motor rotation blockage sent according to the control circuit for receiving
Malfunction coefficient code is shown.
Refrigerator, except carrying out alarm, can also show failure code according to an embodiment of the invention, so as to convenient
User knows the concrete failure of refrigerator, to take corresponding process to operate.
According to one embodiment of present invention, also include：Defrosting circuit 206, is connected to the control circuit 106, in institute
When stating control circuit 106 and judging that the motor occurs stall, according to the defrosting order that the control circuit 106 for receiving sends
Carry out defrosting operation.
Refrigerator according to an embodiment of the invention, the electric fan blower fan stall of refrigerator, very maximum probability have been because that ice is blocked
The blade of fan electromotor, so may solve this problem by defrost, now refrigerator carries out pressure defrosting operation, and defrost is exited
Temperature, raises 10 degree than original, it is ensured that defrost time long enough, and waste heat can melt icing at blower fan.When implement as above
After control, regularly detection failure whether can also recover, such as voltage recovers normal range (NR), illustrates that stall problem is addressed.
The schematic flow diagram of Fig. 3 control methods of refrigerator according to an embodiment of the invention.
As shown in figure 3, the control method of the refrigerator of embodiments of the invention, wherein, the refrigerator includes fan of refrigerator electricity
The detection circuit of machine stall, display circuit, warning circuit and defrosting circuit, the detection circuit include current detection circuit, put
High current and control circuit, the control method of the refrigerator, including：Step 302, the current detection circuit detection flow through described
But the electric current in the drive circuit of the motor of fan of refrigerator；The current detection circuit is exported by step 304, the amplifying circuit
First voltage signal be amplified process, with export amplify after second voltage signal；Step 306, the control circuit connect
The second voltage signal of the amplifying circuit output is received, and the fan of refrigerator is judged according to the change of the second voltage signal
Motor whether there is stall.
The control method of refrigerator according to an embodiment of the invention, by current detection circuit detection stream passing through fan motor
Electric current, amplifies the output voltage of current detection circuit by amplifying circuit, so as to pass through to judge that the change of voltage judges refrigerator wind
Whether the motor of fan there is stall.
According to one embodiment of present invention, the change according to the second voltage signal judges the fan of refrigerator
Motor whether there is stall, specifically include：Judge that whether the second voltage signal reduces after moment increase；Double
When reducing after judging the second voltage signal moment increase, judge that the motor occurs stall.
According to voltage signal change, the control method of refrigerator, judges whether motor blocks up according to an embodiment of the invention
Turn, specially judge voltage signal whether reduction after moment increase, if double or repeated detection is to this this change,
Then judge that motor occurs stall.
According to one embodiment of present invention, also include：When the control circuit judges that the motor occurs stall, institute
Stating warning circuit carries out alarm according to the alarm command that the control circuit for receiving sends.
The control method of refrigerator, when motor occurs stall, can carry out alarm according to an embodiment of the invention,
So as to avoid refrigerator from freezing extremely.
According to one embodiment of present invention, also include：When the control circuit judges that the motor occurs stall, institute
The malfunction coefficient code for stating the motor rotation blockage that display circuit is sent according to the control circuit for receiving is shown.
The control method of refrigerator, except carrying out alarm, can also show failure generation according to an embodiment of the invention
Code, so as to facilitate user to know the concrete failure of refrigerator, to take corresponding process to operate.
According to one embodiment of present invention, also include：When the control circuit judges that the motor occurs stall, institute
Stating defrosting circuit carries out defrosting operation according to the defrosting order that the control circuit for receiving sends.
The control method of refrigerator according to an embodiment of the invention, the electric fan blower fan stall of refrigerator, very maximum probability are because
There is ice to block the blade of fan electromotor, so may solve this problem by defrost, now refrigerator carries out pressure defrosting operation,
And temperature is exited in defrost, 10 degree are raised than original, it is ensured that defrost time long enough, and waste heat can melt icing at blower fan.
After implementing to be controlled as described above, regularly detection failure whether can also recover, such as voltage recovers normal range (NR), illustrates that stall problem is obtained
To solve.
Technical scheme is described in detail with reference to Fig. 4 and Fig. 5.
Fig. 4 shows that the circuit of the detection circuit of refrigerator fan motor stall according to an embodiment of the invention is illustrated
Figure.
As shown in figure 4, resistance R05 is current sense resistor, from 10 Ω/2W.When fan electromotor normal work, Ifan
For fan input current；When fan motor rotational speed exception or stall, Ifan can increase 2～4 times.The computing of the present invention program
, from the HA1630D04T with high-speed transitions precision, the multiplication factor computational methods of operational amplification circuit are such as amplifier IC01
Under：
Vout/Vin=(R07+R08)/R07
The present invention program adopts the multiplication factor of amplifying circuit for 5 (scope is 4～10 times), the R08=4* for thus calculating
R07, this programme select R07 resistances for 2.5K, and R08 is 10K, precision 1%.
Control circuit MCU is arrived in the output after operational amplifier IC01 amplifications of this magnitude of voltage, and control circuit is by detecting this
The change of magnitude of voltage is determining corresponding loaded work piece, if carrying out forcing defrosting control or report after detecting abnormal feedback signal
It is alert, so as to avoid the occurrence of refrigeration for refrigerator exception.
To guarantee effective operation of blower fan, when detection resistance is selected, general R05 choosings value is less, as shown in figure 4, with 10
As a example by Europe.
When blower fan effectively runs, blower fan terminal voltage accounts for 11V, R05 terminal voltages 1.02V or so.When blower fan occurs stall
When, because immediate current increases about 1 times, so R05 can produce the instantaneous voltage of 2.85V or so, subsequent R05 voltages weaken, about
0.08V.According to the characteristics of above characteristic, combined circuit, can be used as the feature for judging motor abnormality stall.During practical application, because
Voltage is faint, using amplifying circuit, the magnitude of voltage after control circuit checks that R105 amplifies, according to changing as mentioned above
Journey, judges fan electromotor whether stall.
The following detailed description of the deterministic process of fan electromotor stall, and the processing procedure in motor rotation blockage.
Fig. 5 shows the idiographic flow schematic diagram of the control method of refrigerator according to an embodiment of the invention.
As shown in figure 5, the idiographic flow of the control method of refrigerator according to an embodiment of the invention is：
Step 502, control circuit are persistently sampled to the output voltage Vout after the amplification of current sampling resistor end.
Step 504, judges that whether moment increases output voltage Vout, then reduces suddenly, when judged result is to be, enters
Enter step 506, otherwise return to step 502.
Step 506, in output voltage Vout, whether moment increases, and when situation about then reducing suddenly continuously occurs 2 times, sentences
Determine motor and stall occurs.
Step 508, points out motor rotation blockage, sends abnormal alarm prompting, while showing the failure code of the failure.
Step 510, forces to disconnect blower fan output control, and refrigerator occurs blower fan stall more because icing cannot run, performs
Defrost program is forced, and defrost temperature increases by 10 degree than conventional defrost.
Step 512, control circuit control fan electromotor operation are synchronous that feedback voltage is detected.
Step 514, detection voltage variation tendency, judges whether stall again, when judged result is to be, into step
516, otherwise, return to step 508.
Step 516, returns conventional control.Conventional control is that refrigerator is normally controlled.
Technical scheme is described in detail above in association with accompanying drawing, the current signal of fan electromotor can be detected, such as
Fruit fan electromotor exception stall, the control circuit of refrigerator carry out forcing defrosting control or warning after detecting abnormal feedback signal,
So as to avoid the occurrence of refrigeration for refrigerator exception, cause unnecessary customer complaint.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (13)
1. a kind of detection circuit of refrigerator fan motor stall, it is characterised in that include：
Current detection circuit, the input of the current detection circuit are connected to the drive circuit of the refrigerator fan motor, inspection
Survey by the electric current in refrigerator fan motor drive circuit；
Amplifying circuit, the input of the amplifying circuit are connected to the output end of the current detection circuit, and the electric current is examined
The first voltage signal of slowdown monitoring circuit output is amplified process, to export the second voltage signal after amplifying；
Control circuit, is connected to the amplifying circuit, receives the second voltage signal of the amplifying circuit output, and according to described
The change of second voltage signal judges whether the motor of the fan of refrigerator occurs stall；
Wherein,
The control circuit sends defrosting order when the motor for judging the fan of refrigerator occurs stall.
2. the detection circuit of refrigerator fan motor stall according to claim 1, it is characterised in that the current detecting electricity
Road includes：
Current sense resistor, one end of the current sense resistor are connected to the drive circuit of the refrigerator fan motor and described
The input of amplifying circuit, the other end ground connection of the current sense resistor.
3. the detection circuit of refrigerator fan motor stall according to claim 1, it is characterised in that
The amplifying circuit includes：First resistor, second resistance and operational amplifier, the positive input terminal of the operational amplifier connect
The output end of the current detection circuit is connected to, the first resistor and the second resistance are connected in series in the operation amplifier
Between the output end and ground of device, the negative input end of the operational amplifier is connected to the first resistor and the second resistance
Common port.
4. the detection circuit of refrigerator fan motor stall according to claim 1, it is characterised in that also include：
Current-limiting resistance, is connected between the input of output end and the amplifying circuit of the current detection circuit, limit into
Enter the electric current of the amplifying circuit.
5. the detection circuit of refrigerator fan motor stall according to any one of claim 1 to 4, it is characterised in that also
Including：
Impedance matching resistor, is connected between the output end of the amplifying circuit and the control circuit, to match the amplification
The impedance of circuit and the control circuit.
6. a kind of refrigerator, it is characterised in that include：
The detection circuit of the refrigerator fan motor stall as any one of claim 1 to 5；
Warning circuit, the control circuit being connected in the detection circuit of the refrigerator fan motor stall, in the control circuit
When judging that the motor occurs stall, alarm is carried out according to the alarm command that the control circuit for receiving sends.
7. refrigerator according to claim 6, it is characterised in that also include：
Display circuit, is connected to the control circuit, when the control circuit judges that the motor occurs stall, according to reception
To the malfunction coefficient code of motor rotation blockage that sends of the control circuit shown.
8. the refrigerator according to claim 6 or 7, it is characterised in that also include：
Defrosting circuit, is connected to the control circuit, when the control circuit judges that the motor occurs stall, according to reception
To the defrosting order that sends of the control circuit carry out defrosting operation.
9. a kind of control method of refrigerator, the refrigerator include the detection circuit of refrigerator fan motor stall, display circuit, warning
Circuit and defrosting circuit, the detection circuit include current detection circuit, amplifying circuit and control circuit, it is characterised in that bag
Include：
The current detection circuit detects the electric current in the motor of the fan of refrigerator；
The first voltage signal that the current detection circuit is exported by the amplifying circuit is amplified process, to export after amplification
Second voltage signal；
The control circuit receives the second voltage signal of the amplifying circuit output, and according to the change of the second voltage signal
Change judges whether the motor of the fan of refrigerator occurs stall.
10. the control method of refrigerator according to claim 9, it is characterised in that described according to the second voltage signal
Change judge whether the motor of the fan of refrigerator occurs stall, specifically include：
Judge that whether the second voltage signal reduces after moment increase；
It is double judge second voltage signal moment increase after reduce when, judge that the motor occurs stall.
The control method of 11. refrigerators according to claim 9 or 10, it is characterised in that also include：
When the control circuit judges that the motor occurs stall, the warning circuit is according to the control electricity for receiving
The alarm command that road sends carries out alarm.
The control method of 12. refrigerators according to claim 9 or 10, it is characterised in that also include：
When the control circuit judges that the motor occurs stall, the display circuit is according to the control circuit for receiving
The malfunction coefficient code of the motor rotation blockage of transmission is shown.
The control method of 13. refrigerators according to claim 9 or 10, it is characterised in that also include：
When the control circuit judges that the motor occurs stall, the defrosting circuit is according to the control circuit for receiving
The defrosting order of transmission carries out defrosting operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410387472.7A CN104155607B (en) | 2014-08-07 | 2014-08-07 | The detection circuit of refrigerator fan motor stall, refrigerator and its control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410387472.7A CN104155607B (en) | 2014-08-07 | 2014-08-07 | The detection circuit of refrigerator fan motor stall, refrigerator and its control method |
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| CN104155607A CN104155607A (en) | 2014-11-19 |
| CN104155607B true CN104155607B (en) | 2017-03-29 |
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| CN109709484A (en) * | 2019-01-26 | 2019-05-03 | 西安慧晶智能科技有限公司 | A kind of brush direct current motor rotation-blocking up detection device and method |
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| CN110595137B (en) * | 2019-09-30 | 2021-07-23 | 合肥华凌股份有限公司 | Refrigeration equipment and method and device for identifying fan locked rotor |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213070A (en) * | 1997-09-29 | 1999-04-07 | 三洋电机株式会社 | Refrigerator |
| CN1314987A (en) * | 1998-10-31 | 2001-09-26 | 大宇电子株式会社 | Defrost technology for refrigerator |
| CN2587100Y (en) * | 2002-08-21 | 2003-11-19 | 朱方文 | DC motor locked-rotor detecting device |
| CN2697539Y (en) * | 2003-11-20 | 2005-05-04 | 国内贸易部洛阳制冷机械厂 | Electric heating defrosting automatic controller for multiple cooling fan of refrigeratory |
| CN1722559A (en) * | 2004-07-12 | 2006-01-18 | 乐金电子(天津)电器有限公司 | Fan electrical machinery control device and its method |
| CN102323551A (en) * | 2011-09-14 | 2012-01-18 | 开源集成电路(苏州)有限公司 | Circuit for detecting locked point current of micro motor |
| CN102782424A (en) * | 2010-03-08 | 2012-11-14 | 开利公司 | Defrost operations and apparatus for a transport refrigeration system |
| CN103344916A (en) * | 2013-06-28 | 2013-10-09 | 江苏浩峰汽车附件有限公司 | Motor stalling detection method |
| EP2030840B8 (en) * | 2007-08-31 | 2014-08-20 | Murakami Corporation | Lock detection method and lock detection circuit for motor for power-folding mirror |
| CN204116561U (en) * | 2014-08-07 | 2015-01-21 | 合肥美的电冰箱有限公司 | The testing circuit of refrigerator fan motor stall and refrigerator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100707421B1 (en) * | 2004-03-24 | 2007-04-13 | 엘지전자 주식회사 | Motor lock error judgment method using Current magnitude of Washing machine |
-
2014
- 2014-08-07 CN CN201410387472.7A patent/CN104155607B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213070A (en) * | 1997-09-29 | 1999-04-07 | 三洋电机株式会社 | Refrigerator |
| CN1314987A (en) * | 1998-10-31 | 2001-09-26 | 大宇电子株式会社 | Defrost technology for refrigerator |
| CN2587100Y (en) * | 2002-08-21 | 2003-11-19 | 朱方文 | DC motor locked-rotor detecting device |
| CN2697539Y (en) * | 2003-11-20 | 2005-05-04 | 国内贸易部洛阳制冷机械厂 | Electric heating defrosting automatic controller for multiple cooling fan of refrigeratory |
| CN1722559A (en) * | 2004-07-12 | 2006-01-18 | 乐金电子(天津)电器有限公司 | Fan electrical machinery control device and its method |
| EP2030840B8 (en) * | 2007-08-31 | 2014-08-20 | Murakami Corporation | Lock detection method and lock detection circuit for motor for power-folding mirror |
| CN102782424A (en) * | 2010-03-08 | 2012-11-14 | 开利公司 | Defrost operations and apparatus for a transport refrigeration system |
| CN102323551A (en) * | 2011-09-14 | 2012-01-18 | 开源集成电路(苏州)有限公司 | Circuit for detecting locked point current of micro motor |
| CN103344916A (en) * | 2013-06-28 | 2013-10-09 | 江苏浩峰汽车附件有限公司 | Motor stalling detection method |
| CN204116561U (en) * | 2014-08-07 | 2015-01-21 | 合肥美的电冰箱有限公司 | The testing circuit of refrigerator fan motor stall and refrigerator |
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