CN1439855A - Control method and device for straight-flow fan of air-cooled refrigerator - Google Patents
Control method and device for straight-flow fan of air-cooled refrigerator Download PDFInfo
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- CN1439855A CN1439855A CN 03113731 CN03113731A CN1439855A CN 1439855 A CN1439855 A CN 1439855A CN 03113731 CN03113731 CN 03113731 CN 03113731 A CN03113731 A CN 03113731A CN 1439855 A CN1439855 A CN 1439855A
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Abstract
A method and device for controlling the DC fan of wind-cooled refrigerator are disclosed. Said refrigerator comprises compressor, refrigerating chamber and fan with adjustable rotation speed. Said fan is driven by DC motor controlled by a voltage regulator which is composed of temp sensor for refrigerating chamber, comparator for comparing sensed temp with the target temp to output relative control signal, and voltage regulator controlled by said control signal. Its advantages are high fregeration efficiency and saving energy.
Description
Technical field
The present invention relates to wind cooling refrigerator DC fan control technology, be specifically related to the control method of Air Blast fan in a kind of wind cooling refrigerator and based on the fan control device of described control method.
Background technology
In the general wind cooling refrigerator in the prior art, the running status of DC fan is only opened and is stopped two states, does not possess according to actual needs the function of conversion rotating speed.Its rotating speed can only be fixed up at certain a refrigerator (tank-volumes, compressor horsepower).This fan control system only is applicable to the refrigerator that refrigerating capacity is certain.For refrigerating capacity variable refrigerator, especially frequency conversion refrigerator, it is not too suitable that this fan control system seems---the compressor of frequency conversion refrigerator, its rotating speed be many grades variable, its refrigerating capacity also can change thereupon.For fan that can not speed change, it only is applicable to rotating speed shelves that can match in the frequency-changeable compressor.When compressor rotary speed reduced, still with a kind of constant speed operation, seem wasted energy " wasting one's talent on a petty job " to fan; When compressor rotary speed uprised, its seem again " unable to do what one wishes " also made the easy frosting of evaporimeter.
Summary of the invention
Two technical problems that the present invention will solve are: one provides a kind of control method of wind cooling refrigerator DC fan, this control method can be according to the requirement of refrigerator temperature adjusting, DC fan is moved under different rotating speeds, can be complementary with the power output of compressor, make refrigerator be in best running status.Another technical problem that the present invention will solve provides a kind of wind cooling refrigerator DC fan control device, and can be DC fan the various control electric current is provided, thus the speed governing operation function of realization DC fan.
The scheme that the present invention solves above-mentioned first technical problem is, a kind of control method of DC fan of wind cooling refrigerator is provided, and comprises the steps:
The temperature gap of actual temperature and design temperature in refrigerator and cooled Tibetan and the refrigerating chamber is divided at least 4 continuous numerical value intervals by size, is arranged in the signal processing unit;
When refrigerator moves, detect the temperature value in refrigeration and the refrigerating chamber respectively, deliver to signal processing unit;
Signal processing unit calculates temperature gap and temperature gap is included in the numerical value interval of some settings at a certain time interval, sends different control signals by different numerical value intervals to rotary speed controling unit again;
Control circuit moves by corresponding rotating speed by different control signal control DC fans.
In above-mentioned wind cooling refrigerator DC fan control method, describedly in sending the process of different control signals, rotary speed controling unit comprises the steps: by different numerical value intervals
If temperature gap is in first numerical value interval; Then send first kind of control signal to rotary speed controling unit; Control circuit control DC fan moves with the 1st grade of rotating speed;
If temperature gap is in second numerical value interval; Then send second kind of control signal to rotary speed controling unit; Control circuit control DC fan moves with the 2nd grade of rotating speed;
If temperature gap is in the 3rd numerical value interval; Then send the third control signal to rotary speed controling unit; Control circuit control DC fan moves with the 3rd grade of rotating speed;
If temperature gap is in the 4th numerical value interval; Then send the 4th kind of control signal to rotary speed controling unit; Control circuit control DC fan moves with the 4th grade of rotating speed.
In above-mentioned wind cooling refrigerator DC fan control method, described first kind of control signal is that " 1,2,3,4 " pin of single-chip microcomputer sends " high/low, high/low, high and low " signal respectively;
Described second kind of control signal is that " 1,2,3,4 " pin of single-chip microcomputer sends " high/low, high and low, low " signal respectively;
Described the third control signal is that single-chip microcomputer " 1,2,3,4 " pin sends " high and low, low, low " signal respectively;
" 1,2,3,4 " pin that described the 4th kind of control signal is single-chip microcomputer all sends " low " signal.
The present invention is for solving the control device of another technical problem structure, comprise spin manifold temperature detecting unit, signal processing unit and DC fan rotary speed controling unit, described spin manifold temperature detecting unit is delivered to the input interface of described signal processing unit with the temperature simulation voltage signal, and described signal processing unit is that data signal is sent control signal by the control signal output circuit to described DC fan rotary speed controling unit again with the analog signal conversion of sending here.
In above-mentioned wind cooling refrigerator DC fan control device, described spin manifold temperature detecting unit comprises the temperature sensor that is separately positioned in refrigerator cold-storage and the refrigerating chamber, one end ground connection of described sensor, the other end is connected with power supply by resistance respectively, and is connected with the input interface of described signal processing unit by isolation resistance.
In above-mentioned wind cooling refrigerator DC fan control device, described signal processing unit comprises single-chip microcomputer, darlington array, described single-chip microcomputer is delivered to the darlington array integrated circuit after converting temperature analog signal to data signal, and described darlington array integrated circuit sends control signal with the anti-phase back of the control signal of sending here to the DC fan rotary speed controling unit.
In above-mentioned wind cooling refrigerator DC fan control device, described DC fan rotary speed controling unit comprises the control triode, the emitter-base bandgap grading of described triode is connected with the control end of DC fan, the colelctor electrode of triode is connected with darlington array integrated circuit pin 4 in the signal processing unit by resistance, the base stage of described triode is connected with the negative electrode of four Zener diodes at least, the plus earth of the Zener diode of wherein voltage stabilizing value maximum, the anode of other three Zener diodes respectively with signal processing unit in the pin 1 of darlington array integrated circuit, 2,3 connect, the base stage of triode also is connected with the pin 4 of darlington array integrated circuit, and transistor collector is connected with the control power supply.
In above-mentioned wind cooling refrigerator DC fan control device, the voltage stabilizing value of described four Zener diode V1-V4 reduces from big to small gradually.
Implement the control method and the control device of wind cooling refrigerator DC fan provided by the invention, by detecting unit, signal processing and control circuit are set, can make DC fan follow the running status of compressor and change self rotating speed: when compressor during with low cruise, fan also cooperates with corresponding low-speed running, makes whole refrigeration system with energy-saving operation; When compressor ran at high speed, fan was just to run up accordingly, to bring into play the usefulness of refrigeration system to greatest extent.Make whole refrigeration system reach energy-efficient refrigeration.
Description of drawings
Fig. 1 is the frame principle figure of control method of the present invention;
Fig. 2 is the circuit theory diagrams of control device of the present invention.
The specific embodiment
The DC fan control method and the device of wind cooling refrigerator provided by the invention are at the design of the operation characteristic of frequency conversion refrigerator; Require DC fan can follow the running status of frequency-changeable compressor and change self rotating speed: when compressor during with low cruise, fan also cooperates with corresponding low-speed running, makes whole refrigeration system with energy-saving operation; When compressor ran at high speed, fan was just to run up accordingly, to bring into play the usefulness of refrigeration system to greatest extent.This can make whole refrigeration system reach energy-efficient refrigeration.
Control principle: the rotating speed of DC fan is divided into fourth speed.In the process of compressor operation, by the measurement of temperature measuring circuit and the calculating of MCU (single-chip microcomputer), draw the difference of spin manifold temperature and design temperature, again according to the difference size, the control fan turns round with corresponding rotating speeds.If fan is with same speed continuously after operation one period fixed time, compressor is also low not enough in running, spin manifold temperature, then controls DC fan and changes with higher one grade speed running.This control procedure circulates down always, and to run up most, fan speed no longer uprises up to DC fan.
Based on above-mentioned control principle, the invention provides and to realize speed governing purpose control device as shown in Figure 2, in device, be provided with spin manifold temperature detecting unit 1, signal processing unit 2 and DC fan rotary speed controling unit 3, spin manifold temperature detecting unit 1 is delivered to the input interface of signal processing unit 2 with the temperature simulation voltage signal, and signal processing unit 2 is that data signal is sent control signal by the control signal output circuit to DC fan rotary speed controling unit 3 again with the analog signal conversion of sending here.
The spin manifold temperature detecting unit comprises temperature-sensitive sensors A 1, the A2 that is separately positioned in refrigerator cold-storage and the refrigerating chamber, the end ground connection of sensors A 1, A2, the other end is connected with power supply by resistance R 1, R2 respectively, and is connected with the input interface of signal processing unit by isolation resistance R3, R4;
Comprise single-chip microcomputer, darlington array integrated circuit in the signal processing unit, the temperature analog signal that single-chip microcomputer is sent temperature detecting unit here converts data signal to, and sending control signal to the input interface of darlington array integrated circuit according to these signals, the darlington array integrated circuit sends control signal with the anti-phase back of the control signal of sending here to the DC fan rotary speed controling unit;
The DC fan rotary speed controling unit comprises a control triode V5, the emitter-base bandgap grading of triode V5 is connected with the control end of DC fan, the colelctor electrode of triode V5 is connected with darlington array integrated circuit pin 4 in the signal processing unit by resistance R 5, the base stage of triode V5 and at least four Zener diode V1, V2, V3, the negative electrode of V4 connects, the wherein plus earth of Zener diode V1, Zener diode V2, V3, the anode of V4 respectively with signal processing unit in the pin 1 of darlington array integrated circuit, 2,3 connect, the base stage of triode V5 also is connected with the pin 4 of darlington array integrated circuit, and the colelctor electrode of triode V5 also is connected with the control power supply.
The voltage stabilizing value of four Zener diode V1-V4 reduces from big to small gradually, can control 4 kinds of different control electric currents of triode V5 output respectively, and DC fan is moved under the different speeds of service.
With the control device that is provided the control course of work of the present invention is described in conjunction with Fig. 1:
When refrigerator moves, measure spin manifold temperature by temperature measuring circuit, the spin manifold temperature signal is converted to voltage analog signal.By single-chip microcomputer is analog signal conversion data signal, and relatively draws temperature difference with set temperature value.In the SCM program temperature gap is divided into by size from big to small " D, C, B, A " 4 numerical value intervals.Control the rotating speed of compressor and fan again according to the scope under the temperature gap.
Its control method is specific as follows: at set intervals, program is calculated a temperature gap, if temperature gap is in " A " interval, the 1st, 2,3,4 pin of single-chip microcomputer send " high/low, high/low, high and low " signal respectively, make the base voltage value (control triode conducting degree) of V4 control triode, fan just turns round with lowest speed; If temperature gap is in " B " interval, then the 1st of single-chip microcomputer the, 2,3,4 pin send " high/low, high and low, low " signal respectively, make the base voltage value of V3 control triode, just the following low-speed running of fan; If temperature gap is in " C " interval, then the 1st of single-chip microcomputer the, 2,3,4 pin send " high and low, low, low " signal respectively, make the base voltage value of V2 control triode, and fan just runs up in proper order; If temperature gap is in " D " interval, then four of single-chip microcomputer control pins all send " low " signal, by the base voltage value of V1 control triode.
If fan with same rotation speed operation after one period stipulated time, compressor is also low not enough in running, spin manifold temperature, then the programme-control fan turns round with the most high-grade speed up to fan with higher one grade of rotation speed operation, rotation speed of the fan no longer improves.When the compressor pass stopping time, fan is followed and is stopped.
Common wind cooling refrigerator adopts constant speed compressor, and after the one period long period of turning round continuously, frosting easily on the evaporimeter by calculating the available machine time of compressor, is adjusted rotation speed of the fan, helps to lower the problem of evaporimeter frosting; Therefore the present invention also is applicable to the non-frequency refrigerator.
Claims (8)
1, a kind of control method of DC fan of wind cooling refrigerator is characterized in that, comprises the steps:
Temperature gap with actual temperature and design temperature in cold compartment of refrigerator and the refrigerating chamber is divided at least 4 continuous numerical value intervals by size in advance, is arranged in the signal processing unit;
When refrigerator moves, detect the temperature value in refrigeration and the refrigerating chamber respectively, deliver to described signal processing unit;
Described signal processing unit calculates temperature gap and temperature gap is included in the numerical value interval of some settings at a certain time interval, by different numerical value intervals, sends different control signals to rotary speed controling unit again;
Described rotary speed controling unit is according to different control signals, and the control DC fan is by corresponding rotating speed operation.
2, wind cooling refrigerator DC fan control method according to claim 1 is characterized in that, describedly sends different control signal steps by different numerical value intervals to rotary speed controling unit, comprises the steps:
If temperature gap is in first numerical value interval, then described signal processing unit sends first kind of control signal to rotary speed controling unit, and described rotary speed controling unit control DC fan moves with the 1st grade of rotating speed;
If temperature gap is in second numerical value interval, then described signal processing unit sends second kind of control signal to rotary speed controling unit, and described rotary speed controling unit control DC fan moves with the 2nd grade of rotating speed;
If temperature gap is in the 3rd numerical value interval, then described signal processing unit sends the third control signal to rotary speed controling unit, and described rotary speed controling unit control DC fan moves with the 3rd grade of rotating speed;
If temperature gap is in the 4th numerical value interval, then described signal processing unit sends the 4th kind of control signal to rotary speed controling unit, and described rotary speed controling unit control DC fan moves with the 4th grade of rotating speed.
3, according to the described wind cooling refrigerator DC fan of claim 2 control method, it is characterized in that:
Described first kind of control signal is that " 1,2,3,4 " pin of single-chip microcomputer sends " high/low, high/low, high and low " signal respectively;
Described second kind of control signal is that " 1,2,3,4 " pin of single-chip microcomputer sends " high/low, high and low, low " signal respectively;
Described the third control signal is that single-chip microcomputer " 1,2,3,4 " pin sends " high and low, low, low " signal respectively;
" 1,2,3,4 " pin that described the 4th kind of control signal is single-chip microcomputer all sends " low " signal.
4, a kind of wind cooling refrigerator DC fan control device, it is characterized in that, comprise spin manifold temperature detecting unit, signal processing unit and DC fan rotary speed controling unit, described spin manifold temperature detecting unit is delivered to the input interface of described signal processing unit with the temperature simulation voltage signal, and described signal processing unit is that data signal is sent control signal by the control signal output unit to described DC fan rotary speed controling unit again with the analog signal conversion of sending here.
5, according to the described wind cooling refrigerator DC fan of claim 4 control device, it is characterized in that, described spin manifold temperature detecting unit comprises the temperature sensor that is separately positioned in refrigerator cold-storage and the refrigerating chamber, one end ground connection of described sensor, the other end is connected with power supply by resistance respectively, and is connected with the input interface of described signal processing unit by isolation resistance.
6, according to the described wind cooling refrigerator DC fan of claim 4 control device, it is characterized in that, described signal processing unit comprises single-chip microcomputer, darlington array, described single-chip microcomputer converts temperature analog signal to data signal, and sending control signal to the darlington array integrated circuit according to these signals, described darlington array integrated circuit is delivered to the DC fan rotary speed controling unit with the control signal of sending here after anti-phase.
7, according to the described wind cooling refrigerator DC fan of claim 4 control device, it is characterized in that, described DC fan rotary speed controling unit comprises the control triode, the emitter-base bandgap grading of described triode is connected with the control end of DC fan, the colelctor electrode of triode is connected with darlington array integrated circuit pin 4 in the signal processing unit by resistance, the base stage of described triode is connected with the negative electrode of four Zener diodes at least, the plus earth of the Zener diode of wherein voltage stabilizing value maximum, the anode of all the other (three) Zener diodes respectively with signal processing unit in the pin 1 of darlington array integrated circuit, 2,3 connect, the base stage of triode also is connected with the pin 4 of darlington array integrated circuit, and transistor collector is connected with the control power supply.
According to the described wind cooling refrigerator DC fan of claim 7 control device, it is characterized in that 8, the voltage stabilizing value of described four Zener diode V1-V4 reduces from big to small gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031137318A CN100455958C (en) | 2003-01-28 | 2003-01-28 | Control method and device for straight-flow fan of air-cooled refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031137318A CN100455958C (en) | 2003-01-28 | 2003-01-28 | Control method and device for straight-flow fan of air-cooled refrigerator |
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| CN1439855A true CN1439855A (en) | 2003-09-03 |
| CN100455958C CN100455958C (en) | 2009-01-28 |
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| CNB031137318A Expired - Fee Related CN100455958C (en) | 2003-01-28 | 2003-01-28 | Control method and device for straight-flow fan of air-cooled refrigerator |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2075520A2 (en) * | 2007-12-28 | 2009-07-01 | Liebherr-Hausgeräte Ochsenhausen GmbH | Refrigeration and/or freezer device |
| CN102506536A (en) * | 2011-09-30 | 2012-06-20 | 合肥美的荣事达电冰箱有限公司 | Air indirect cooling refrigerator and temperature control method thereof |
| CN104359283A (en) * | 2014-11-14 | 2015-02-18 | 合肥美的电冰箱有限公司 | Control method and device for air cooling refrigerator and air cooling refrigerator |
| CN104677044A (en) * | 2013-11-27 | 2015-06-03 | 株式会社东芝 | Refrigerator |
| CN105276913A (en) * | 2015-04-13 | 2016-01-27 | Tcl智能科技（合肥）有限公司 | Method for adjusting rotation speed of draught fan of air cooling refrigerator and air cooling refrigerator |
| CN107101451A (en) * | 2017-04-26 | 2017-08-29 | Tcl家用电器（合肥）有限公司 | Refrigerator and its refrigeration control method and device |
| CN108462427A (en) * | 2017-02-20 | 2018-08-28 | 茂达电子股份有限公司 | Fan drive circuit |
| CN109405408A (en) * | 2018-10-18 | 2019-03-01 | 长虹美菱股份有限公司 | A kind of fan motor rotational speed control method and the refrigerator using this method |
| CN109528205A (en) * | 2018-11-15 | 2019-03-29 | 歌尔科技有限公司 | A kind of reminding method, device, helmet and computer readable storage medium |
| CN110345698A (en) * | 2018-04-02 | 2019-10-18 | 合肥美的电冰箱有限公司 | Control method, device and the refrigerator of refrigerator cold-storage fan |
| CN112577237A (en) * | 2019-09-27 | 2021-03-30 | 青岛海尔电冰箱有限公司 | Control method of refrigerating and freezing device and refrigerating and freezing device |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2075520A2 (en) * | 2007-12-28 | 2009-07-01 | Liebherr-Hausgeräte Ochsenhausen GmbH | Refrigeration and/or freezer device |
| EP2075520B1 (en) * | 2007-12-28 | 2019-08-28 | Liebherr-Hausgeräte Ochsenhausen GmbH | Refrigeration and/or freezer device |
| CN102506536A (en) * | 2011-09-30 | 2012-06-20 | 合肥美的荣事达电冰箱有限公司 | Air indirect cooling refrigerator and temperature control method thereof |
| CN104677044A (en) * | 2013-11-27 | 2015-06-03 | 株式会社东芝 | Refrigerator |
| CN104677044B (en) * | 2013-11-27 | 2017-09-08 | 东芝生活电器株式会社 | Refrigerator |
| CN104359283A (en) * | 2014-11-14 | 2015-02-18 | 合肥美的电冰箱有限公司 | Control method and device for air cooling refrigerator and air cooling refrigerator |
| CN105276913A (en) * | 2015-04-13 | 2016-01-27 | Tcl智能科技（合肥）有限公司 | Method for adjusting rotation speed of draught fan of air cooling refrigerator and air cooling refrigerator |
| CN105276913B (en) * | 2015-04-13 | 2018-01-30 | Tcl智能科技（合肥）有限公司 | Wind cooling refrigerator rotation speed of fan method of adjustment and wind cooling refrigerator |
| CN108462427A (en) * | 2017-02-20 | 2018-08-28 | 茂达电子股份有限公司 | Fan drive circuit |
| CN107101451A (en) * | 2017-04-26 | 2017-08-29 | Tcl家用电器（合肥）有限公司 | Refrigerator and its refrigeration control method and device |
| CN107101451B (en) * | 2017-04-26 | 2019-12-10 | Tcl家用电器（合肥）有限公司 | refrigerator and refrigeration control method and device thereof |
| CN110345698A (en) * | 2018-04-02 | 2019-10-18 | 合肥美的电冰箱有限公司 | Control method, device and the refrigerator of refrigerator cold-storage fan |
| CN109405408A (en) * | 2018-10-18 | 2019-03-01 | 长虹美菱股份有限公司 | A kind of fan motor rotational speed control method and the refrigerator using this method |
| CN109528205A (en) * | 2018-11-15 | 2019-03-29 | 歌尔科技有限公司 | A kind of reminding method, device, helmet and computer readable storage medium |
| CN109528205B (en) * | 2018-11-15 | 2021-06-15 | 歌尔科技有限公司 | Prompting method and device, head-mounted equipment and computer-readable storage medium |
| CN112577237A (en) * | 2019-09-27 | 2021-03-30 | 青岛海尔电冰箱有限公司 | Control method of refrigerating and freezing device and refrigerating and freezing device |
| CN112577237B (en) * | 2019-09-27 | 2022-03-25 | 青岛海尔电冰箱有限公司 | Control method of refrigerating and freezing device and refrigerating and freezing device |
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| CN100455958C (en) | 2009-01-28 |
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