CN106895661A - A kind of refrigerator temperature controls circuit - Google Patents
A kind of refrigerator temperature controls circuit Download PDFInfo
- Publication number
- CN106895661A CN106895661A CN201710097487.3A CN201710097487A CN106895661A CN 106895661 A CN106895661 A CN 106895661A CN 201710097487 A CN201710097487 A CN 201710097487A CN 106895661 A CN106895661 A CN 106895661A
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- CN
- China
- Prior art keywords
- circuit
- control unit
- unit
- refrigerator
- temperature
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/008—Alarm devices
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The present invention proposes a kind of refrigerator temperature control circuit, including control unit, described control unit is connected with DC-voltage supply power supply, described control unit is connected with analog to digital conversion circuit, analog-digital conversion circuit as described connects temperature sensor, temporary memory cell is provided between described control unit and analog-digital conversion circuit as described, described control unit is connected with heater strip and compressor by power amplifier unit, the AD conversion unit is connected with overvoltage/undervoltage protection location, described control unit is connected with reset unit and I/O unit, the present invention is not only able to realize the fast cooling in refrigerator cold-storage room, and under-voltage protection can be carried out, improve cold storage effect, realize energy-conserving and environment-protective.
Description
Technical field
The invention belongs to household electrical appliance technical field, more particularly to a kind of refrigerator temperature control circuit.
Background technology
At present, refrigerator brings convenience to family life, alleviates housework.Different foods are prevented for the ease of classification storage
Mutual taint of odour between thing, current refrigerator is made with multi-layer drawers or fruit vegetable box mostly.These drawers are respectively arranged at refrigerating chamber
In refrigerating chamber, whole refrigerator is divided into two temperature-controlled areas, i.e. freezer temperature control zone and temperature of refrigerating chamber control zone.It is cold
Freeze room generally to freeze to store food thing under relatively low-temperature condition；And refrigerating chamber under state of temperature relatively high with refrigerate
State stores food thing.
Because the refrigerating plant of refrigerator is not always to carrying out cold air supply in refrigerating chamber, with reserve in refrigerator
Heat is distributed, and causes the temperature of cold compartment of refrigerator persistently to rise, and at this time, it may be necessary to carry out cold air output to the refrigerated gas of refrigerator,
But, the output control precision of cold air is not enough, and cold storage effect is not good and there is obvious power dissipation phenomenon.
Therefore, need a kind of refrigerator temperature control circuit badly now, be not only able to realize the fast cooling in refrigerator cold-storage room,
And under-voltage protection can be carried out, and cold storage effect is improved, realize energy-conserving and environment-protective.
The content of the invention
The present invention proposes a kind of refrigerator temperature control circuit, solves the output control essence of cold air in refrigerator in the prior art
Degree is not enough, and cold storage effect is not good and there is obvious power dissipation phenomenon.
The technical proposal of the invention is realized in this way：Refrigerator temperature controls circuit, including control unit, the control list
Unit is connected with DC-voltage supply power supply, and described control unit is connected with analog to digital conversion circuit, analog-digital conversion circuit as described connection
Temperature sensor, is provided with temporary memory cell, described control unit between described control unit and analog-digital conversion circuit as described
Heater strip and compressor are connected with by power amplifier unit, the AD conversion unit is connected with overvoltage/undervoltage protection location, the control
Unit processed is connected with reset unit and I/O unit.
As one kind preferred embodiment, described control unit is connected with clock oscillation unit and alarm unit.
As one kind preferred embodiment, the temperature of the temperature sensor meets with voltage relationship：
Vout_LM35(T)=10mV/ DEG C × T DEG C
0V is output as at 0 DEG C, 1 DEG C is often raised, output voltage increases 10mV.
As one kind preferred embodiment, the reset unit includes external circuit and internal circuit, using outside
Circuit produces reset signal, and the reset signal is sent into trigger, and the output using internal circuit to trigger is carried out
Sampling, the final signal required for obtaining control unit.
As one kind preferred embodiment, the temporary memory cell includes reading temporary storage, writes temporary storage
And replicate temporary storage.
Preferred embodiment the warning circuit includes indicator lamp warning circuit as a kind of, including second resistance, the
Three resistance, the first triode and the first loudspeaker, described second resistance one end connect described control unit, and the other end connects respectively
One end of the 3rd resistor and the base stage of the first triode are connect, the other end of the 3rd resistor connects the first triode
Emitter stage, first loudspeaker connects the colelctor electrode of first triode.
As one kind preferred embodiment, the overvoltage/undervoltage protection location is when input voltage is less than the first threshold voltage
When, the efferent duct of first comparator is ended, the efferent duct of the second comparator is turned on；Overvoltage/undervoltage protection location works as input voltage
During more than the first threshold voltage, the efferent duct of first comparator is turned on, by the efferent duct of the second comparator without cut-off；Work as input
Voltage is located at when within window voltage, and the efferent duct of the efferent duct of first comparator and the second comparator is turned off.
As one kind preferred embodiment, the display unit includes counter and is connected with meter with the counter
When position selection circuit, also including display decoding circuit and display position selection circuit, shown display decoding circuit connects the meter
When position selection circuit, such as you be willing to show position selection circuit connect as described in counter.
As one kind preferred embodiment, the temperature sensor is arranged in refrigerator freezing room, real-time monitoring refrigerator
Temperature in refrigerating chamber, when the Temperature numerical average value monitored within continuous three cycles is more than the first threshold temperature,
Described control unit controls the compressor operating；And when the temperature sensor monitors are less than to the temperature in refrigerator freezing room
During the second threshold temperature, compressor operating is stopped after the time cycle of time delay second.
As one kind preferred embodiment, the counter includes subtraction count device and compares counter, the sampling
Holding circuit produces fixed frequency pulse signal and delivers to subtraction count device according to the measurement result of the temperature sensor,
Corresponding base value is provided with register and subtraction count device, subtraction count device carries out subtraction according to pulse signal, when
When the preset value of subtraction count device reduces to 0, the numerical value of register increases by 1, after the preset value of subtraction count device is reloaded into, subtracts
Method counter restarts to produce pulse count signal, is so recycled to when counter is compared to 0, determines measurement temperature, and
Using analog-to-digital conversion and display circuit display measurement result.
Refrigerator temperature control circuit of the present invention is not only able to realize the fast cooling in refrigerator cold-storage room, and can carry out
Under-voltage protection, improves cold storage effect, realizes energy-conserving and environment-protective
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
Other accompanying drawings are obtained with according to these accompanying drawings.
Fig. 1 is structural representation of the invention.
In figure, 1-；2-；3-；4-；5-；6-；7-；8-；9-；10-；11-；12-；13-.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in figure 1, this refrigerator temperature controls circuit, including control unit, described control unit to be connected with DC voltage
Power supply, described control unit is connected with analog to digital conversion circuit, analog-digital conversion circuit as described connection temperature sensor, the control
Temporary memory cell is provided between unit processed and analog-digital conversion circuit as described, described control unit is connected with by power amplifier unit
Heater strip and compressor, the AD conversion unit are connected with overvoltage/undervoltage protection location, and it is single that described control unit is connected with reset
Unit and I/O unit.
Described control unit is connected with clock oscillation unit and alarm unit.
The temperature of the temperature sensor meets with voltage relationship：
Vout_LM35 (T)=10mV/ DEG C × T DEG C
0V is output as at 0 DEG C, 1 DEG C is often raised, output voltage increases 10mV.
The reset unit includes external circuit and internal circuit, and reset signal is produced using external circuit, and by institute
State reset signal and be sent to trigger, the output using internal circuit to trigger is sampled, required for obtaining control unit
Final signal.
The temporary memory cell includes reading temporary storage, write temporary storage and replicating temporary storage.
The warning circuit includes indicator lamp warning circuit, including second resistance, 3rd resistor, the first triode and the
One loudspeaker, described second resistance one end connects described control unit, the other end connect respectively one end of the 3rd resistor with
And first triode base stage, the other end of the 3rd resistor connects the emitter stage of the first triode, first loudspeaker
Connect the colelctor electrode of first triode.
The overvoltage/undervoltage protection location cuts the efferent duct of first comparator when input voltage is less than the first threshold voltage
Only, the efferent duct of the second comparator is turned on；Overvoltage/undervoltage protection location when input voltage be more than the first threshold voltage when, by first
The efferent duct conducting of comparator, by the efferent duct of the second comparator without cut-off；When input voltage is located within window voltage, will
The efferent duct of the efferent duct of first comparator and the second comparator is turned off.
The display unit includes counter and is connected with timing position selection circuit with the counter, also including display
Decoding circuit and display position selection circuit, shown display decoding circuit connect timing position selection circuit, as you are willing to show
Show that a selection circuit connects the counter.
The temperature sensor is arranged in refrigerator freezing room, the temperature in real-time monitoring refrigerator freezing room, when continuous
Three cycles in the Temperature numerical average value that monitors when being more than the first threshold temperature, described control unit controls the compression
Machine works；And when the temperature sensor monitors to the temperature in refrigerator freezing room are less than the second threshold temperature, time delay second
Stop compressor operating after time cycle.
The counter includes subtraction count device and compares counter, and the sampling hold circuit is according to the TEMP
The measurement result of device, produces fixed frequency pulse signal and delivers to subtraction count device, is set in register and subtraction count device
There is corresponding base value, subtraction count device carries out subtraction according to pulse signal, when the preset value of subtraction count device reduces to 0
When, the numerical value of register increases by 1, after the preset value of subtraction count device is reloaded into, and subtraction count device restarts to produce arteries and veins
Signal-count is rushed, is so recycled to when counter is compared to 0, determine measurement temperature, and using analog-to-digital conversion and display electricity
Road shows measurement result.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of refrigerator temperature controls circuit, it is characterised in that including control unit, described control unit is connected with DC voltage
Power supply, described control unit is connected with analog to digital conversion circuit, analog-digital conversion circuit as described connection temperature sensor, the control
Temporary memory cell is provided between unit processed and analog-digital conversion circuit as described, described control unit is connected with by power amplifier unit
Heater strip and compressor, the AD conversion unit are connected with overvoltage/undervoltage protection location, and it is single that described control unit is connected with reset
Unit and I/O unit.
2. refrigerator temperature according to claim 1 controls circuit, it is characterised in that described control unit is connected with clock and shakes
Swing unit and alarm unit.
3. refrigerator temperature according to claim 2 controls circuit, it is characterised in that the temperature of the temperature sensor and electricity
Pressure relation meets：
0V is output as at 0 DEG C, 1 DEG C is often raised, output voltage increases 10mV.
4. refrigerator temperature according to claim 3 controls circuit, it is characterised in that the reset unit includes external circuit
And internal circuit, reset signal is produced using external circuit, and the reset signal is sent to trigger, using internal electricity
Output of the road to trigger is sampled, the final signal required for obtaining control unit.
5. refrigerator temperature according to claim 4 controls circuit, it is characterised in that the temporary memory cell includes reading temporary
Memory is deposited, temporary storage is write and replicates temporary storage.
6. refrigerator temperature according to claim 5 controls circuit, it is characterised in that the warning circuit includes indicator lamp report
Alert circuit, including second resistance, 3rd resistor, the first triode and the first loudspeaker, described second resistance one end connects institute
Control unit is stated, the other end connects one end of the 3rd resistor and the base stage of the first triode, the 3rd resistor respectively
The other end connect the emitter stage of the first triode, first loudspeaker connects the colelctor electrode of first triode.
7. refrigerator temperature according to claim 6 controls circuit, it is characterised in that the overvoltage/undervoltage protection location is when input
When voltage is less than the first threshold voltage, the efferent duct of first comparator is ended, the efferent duct of the second comparator is turned on；Cross and owe
Pressure protection location turns on the efferent duct of first comparator, by the second comparator when input voltage is more than the first threshold voltage
Efferent duct without cut-off；When input voltage is located within window voltage, by the efferent duct of first comparator and the second comparator
Efferent duct be turned off.
8. refrigerator temperature according to claim 7 control circuit, it is characterised in that the display unit include counter with
And timing position selection circuit is connected with the counter, it is shown also including display decoding circuit and display position selection circuit
Display decoding circuit connects timing position selection circuit, the counter as described in you are willing to display position selection circuit connection.
9. refrigerator temperature according to claim 8 controls circuit, it is characterised in that the temperature sensor is arranged at refrigerator
In refrigerating chamber, the temperature in real-time monitoring refrigerator freezing room, when the Temperature numerical monitored within continuous three cycles is average
When value is more than the first threshold temperature, described control unit controls the compressor operating；And when the temperature sensor monitors are arrived
When temperature in refrigerator freezing room is less than the second threshold temperature, compressor operating is stopped after the time cycle of time delay second.
10. refrigerator temperature according to claim 9 controls circuit, it is characterised in that the counter includes subtraction count
Device produces fixed frequency arteries and veins with counter, the sampling hold circuit is compared according to the measurement result of the temperature sensor
Rush signal and deliver to subtraction count device, be provided with corresponding base value in register and subtraction count device, subtraction count device according to
Pulse signal carries out subtraction, and when the preset value of subtraction count device reduces to 0, the numerical value of register increases by 1, subtraction count device
Preset value be reloaded into after, subtraction count device restarts to produce pulse count signal, is so recycled to when comparing counting
When device is to 0, measurement temperature is determined, and using analog-to-digital conversion and display circuit display measurement result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097487.3A CN106895661A (en) | 2017-02-22 | 2017-02-22 | A kind of refrigerator temperature controls circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097487.3A CN106895661A (en) | 2017-02-22 | 2017-02-22 | A kind of refrigerator temperature controls circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106895661A true CN106895661A (en) | 2017-06-27 |
Family
ID=59184727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710097487.3A Pending CN106895661A (en) | 2017-02-22 | 2017-02-22 | A kind of refrigerator temperature controls circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106895661A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1560548A (en) * | 2004-02-16 | 2005-01-05 | 海信（北京）电器有限公司 | Automatic qick-freeze refrigerator and its control method |
| CN202485326U (en) * | 2012-03-21 | 2012-10-10 | 刘石劬 | Intelligentized refrigerator energy-saving controller |
| CN104344906A (en) * | 2014-10-27 | 2015-02-11 | 哈尔滨理大晟源科技开发有限公司 | Single signal wire digital type temperature sensing testing device and testing method of single signal wire digital type temperature sensing testing device |
| CN105737510A (en) * | 2016-04-20 | 2016-07-06 | 合肥美的电冰箱有限公司 | Control method and system of refrigerator as well as refrigerator with system |
| CN105929868A (en) * | 2016-05-30 | 2016-09-07 | 澳柯玛股份有限公司 | Integrated electronic temperature controller |
-
2017
- 2017-02-22 CN CN201710097487.3A patent/CN106895661A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1560548A (en) * | 2004-02-16 | 2005-01-05 | 海信（北京）电器有限公司 | Automatic qick-freeze refrigerator and its control method |
| CN202485326U (en) * | 2012-03-21 | 2012-10-10 | 刘石劬 | Intelligentized refrigerator energy-saving controller |
| CN104344906A (en) * | 2014-10-27 | 2015-02-11 | 哈尔滨理大晟源科技开发有限公司 | Single signal wire digital type temperature sensing testing device and testing method of single signal wire digital type temperature sensing testing device |
| CN105737510A (en) * | 2016-04-20 | 2016-07-06 | 合肥美的电冰箱有限公司 | Control method and system of refrigerator as well as refrigerator with system |
| CN105929868A (en) * | 2016-05-30 | 2016-09-07 | 澳柯玛股份有限公司 | Integrated electronic temperature controller |
Non-Patent Citations (6)
| Title |
|---|
| 吴家碚: "《单片机原理与应用技术》", 31 August 2008, 北京理工大学出版社 * |
| 姜雪松: "《VHDL设计实例与仿真》", 31 January 2007, 机械工业出版社 * |
| 张建荣: "《单片机系统设计与制作》", 31 August 2013, 北京理工大学出版社 * |
| 张玉莲: "《传感器与自动检测技术》", 31 July 2012, 机械工业出版社 * |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170627 |
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| RJ01 | Rejection of invention patent application after publication |