CN110360779A - Liquid impact prevention protection control method for air-cooled refrigerator compressor - Google Patents
Liquid impact prevention protection control method for air-cooled refrigerator compressor Download PDFInfo
- Publication number
- CN110360779A CN110360779A CN201910632704.3A CN201910632704A CN110360779A CN 110360779 A CN110360779 A CN 110360779A CN 201910632704 A CN201910632704 A CN 201910632704A CN 110360779 A CN110360779 A CN 110360779A
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- China
- Prior art keywords
- temperature
- compressor
- refrigerator
- fan
- cooling chamber
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a liquid impact prevention protection control method for an air-cooled refrigerator compressor, which comprises the following steps that when a defrosting temperature sensor is lower than-35 ℃, the compressor is forced to stop, but a fan continues to operate until the temperature sensor in a cooling chamber reaches the stop point temperature of the set temperature in the cooling chamber, and the fan stops operating; if the compressor is stopped and the running time of the fan reaches 30min, the temperature sensor in the cooling chamber still does not reach the temperature of the stop point of the set temperature in the cooling chamber, at the moment, the compressor is restarted, the fan also continues to run, and the refrigerator runs back to the normal running state of the normal mode.
Description
Technical field:
The present invention relates to a kind of wind cooling refrigerator compressor liquid impact preventions to protect control method, belongs to refrigerator art.
Background technique:
Existing computer temperature control wind cooling refrigerator, this refrigerator include cooling chamber, fan, control system, refrigeration system.In cooling chamber
There is the sensor of temperature in perception cooling chamber；Refrigeration system includes compressor, cooler, muffler, refrigerant, wherein on cooler
There is the defrost temperature sensor of perception chiller temperature；The refrigeration principle of this refrigerator are as follows: refrigerator control system perceives in cooling chamber
Temperature sensor whether reach the startup-shutdown point temperature of compressor to control the start-stop of compressor；The compressed machine of the start-stop of fan
Start-stop control, it is synchronous with compressor start-stop, when cooling chamber temperature sensor temperature is increased to compressor starting point temperature, compression
Machine booting, refrigeration system operation, cooler start to cool down, and fan starts running and takes the cooling capacity on cooler to cooling chamber
Inside achieve the effect that refrigeration for refrigerator；After compressor and fan run a period of time, when cooling chamber temperature sensor is reduced to compression
When machine break point temperature, compressor shutdown, fan shuts down, cooler and cooling room temperature bottom out；When cooling room temperature
When degree sensor goes back up to compressor starting point temperature, refrigerator starts again at refrigeration cool-down, so circulation is gone down, keeps refrigerator cooling
Room maintains always under a stable low-temperature condition, reaches the function of refrigeration for refrigerator.
Refrigerator is under refrigeration principle steady operational status described above, and when refrigerator is in high environment temperature, refrigerator is cold
But the cooling capacity on device need to meet cooling indoor refrigeration requirement, due to high environment temperature, cooling chamber and the ambient temperature temperature difference
Larger, loss of refrigeration capacity is than very fast, and when compressor and fan running, the cooling capacity on cooler can quickly be taken in cooling chamber,
Even if compressor and fan run the long period, the temperature on cooler can also maintain a higher temperature, cool down at this time
Refrigerant in device is after leaving cooler, mostly gas-liquid mixture phase, and by the heating of muffler, refrigerant reaches compressor air suction
Mouthful when all become the gaseous state that compressor can suck normally because cooling chamber when refrigerator will meet high environment temperature is cold
Amount demand.When refrigerator is in low ambient temperature, cooling chamber and the ambient temperature temperature difference are smaller, and loss of refrigeration capacity is slow, pressure
Refrigerating capacity provided by refrigerator cooler will be much higher than the demand of cooling chamber when contracting machine and fan running, in cooling compartment sensor
Before temperature is reduced to compressor shutdown point temperature, compressor only runs the very short time, and a large amount of cooling capacity will stay on cooler
On, reduce the temperature on cooler quickly, and maintain under a very low state of temperature, the refrigerant in cooler exists at this time
It is essentially low temperature liquid after leaving cooler, even across the heating of muffler, refrigerant still has when reaching compressor air suction mouth
Operative liquid refrigerant can not volatilize completely, and liquid refrigerants can be sucked by compressor air suction mouth at this time, cause the liquid hammer of compressor existing
As compressor will seriously affect the service life of compressor by after multiple liquid hammer.
Summary of the invention:
The present invention is to provide a kind of wind cooling refrigerator compressor liquid impact prevention to solve the above-mentioned problems of the prior art
Protect control method.
The technical solution adopted in the present invention has: a kind of wind cooling refrigerator compressor liquid impact prevention protection control method, step is such as
Under:
(1) cooling indoor temperature transmitter actual perceived to temperature recovery provide the pressure that refrigeration is requested to refrigerator cooling chamber
When contracting machine starting point temperature, refrigerator starts again at refrigeration cool-down, compressor booting at this time, fan running；
(2) if cooling indoor temperature transmitter actual perceived to temperature be not up to refrigerator cooling chamber and provide stopping refrigeration and ask
When the compressor shutdown point temperature asked, by defrost temperature sensor actual perceived on detection cooler to temperature whether be lower than
- 35 DEG C of liquid hammer risk temperature value is to determine whether force to make compressor shutdown, if defrost temperature sensor is real on detection cooler
The temperature that border perceives then forces to make compressor shutdown lower than -35 DEG C of liquid hammer risk temperature value, and compressor shuts down at this time, wind
Fan will remain in operation down；
(3) if compressor shutdown, fan running continue 30min, the temperature that cooling indoor temperature transmitter actual perceived arrives
It is still not up to refrigerator cooling chamber and provides the compressor shutdown point temperature for stopping refrigeration request, freezer compressor will restart at this time
Operation, fan will be returned to normal operating mode, operate synchronously with compressor；Refrigerator runs the normal operation shape for returning to normal mode
State.
The invention has the following beneficial effects: wind cooling refrigerator compressor liquid impact prevention of the present invention protection control methods to make computer temperature
In the state that control wind cooling refrigerator meets high environment temperature refrigerating capacity, freezes under normal circumstances in low ambient temperature cooling chamber, prevent
It is too long (compressor operating time is longer, and chiller temperature is lower) that runing time occurs in freezer compressor, and refrigerant is caused to reach pressure
The compressor liquid hammer problem still generated with the presence of liquid refrigerants when contracting machine air entry, increases the service life of compressor.
Detailed description of the invention:
Fig. 1 is the flow chart that wind cooling refrigerator compressor liquid impact prevention of the present invention protects control method.
Specific embodiment:
The present invention will be further described below with reference to the drawings.
When chiller temperature is reduced to -35 DEG C, compressor continues to run, and continues that cooler is allowed to cool down, and compressor is inhaled
Port will start liquid refrigerants occur, cause liquid hammer risk, wind cooling refrigerator compressor liquid impact prevention protection of the present invention to compressor
Control method, the specific steps are as follows:
(1) cooling indoor temperature transmitter actual perceived to temperature (Tfcc) go back up to refrigerator cooling chamber and provide refrigeration and ask
When the compressor starting point temperature (Tfck) asked, refrigerator starts again at refrigeration cool-down, compressor booting at this time, fan running；
(2) if cooling indoor temperature transmitter actual perceived to temperature (Tfcc) be not up to refrigerator cooling chamber and provide stopping
When the compressor shutdown point temperature (Tfct) requested of freezing, arrived by defrost temperature sensor actual perceived on detection cooler
Whether temperature (Tdef) is lower than -35 DEG C of liquid hammer risk temperature value to determine whether forcing to make compressor shutdown, if detection cooler
Upper defrost temperature sensor actual perceived to temperature (Tdef) then force to stop compressor lower than -35 DEG C of liquid hammer risk temperature value
Machine, due to remaining a large amount of cooling capacity on cooler, although compressor has shut down, fan will not follow compressor same at this time
Step stalling, fan will remain in operation down, and the residual cooling capacity on cooler is taken in cooling chamber to reach cooling chamber refrigeration
Purpose, while the residual cooling capacity on cooler will be fully utilized, and reduce the energy consumption of refrigerator；
(3) if compressor shutdown, fan running continue 30min, the temperature that cooling indoor temperature transmitter actual perceived arrives
(Tfcc) it is still not up to refrigerator cooling chamber and provides the compressor shutdown point temperature (Tfct) for stopping refrigeration request, we will judge cold
But the residual cooling capacity on device is unable to satisfy the demand cooling capacity that cooling chamber reaches set temperature, and freezer compressor will restart at this time
Operation, fan will be returned to normal operating mode, operate synchronously with compressor；Refrigerator runs the normal operation shape for returning to normal mode
State.
When the temperature (Tdef) that defrost temperature sensor actual perceived arrives on cooler is less than -35 DEG C, compression is allowed at this time
Machine forced stoppage, but blower continues to run, cooling indoor temperature transmitter actual perceived to temperature (Tfcc) reach refrigerator
Cooling chamber provides the compressor shutdown point temperature (Tfct) for stopping refrigeration request, and blower also will be out of service at this time；If compressing
Machine is shut down, the fan operation time reaches 30min, cooling indoor temperature transmitter actual perceived to temperature (Tfcc) be still not up to
Refrigerator cooling chamber provides the compressor shutdown point temperature (Tfct) for stopping refrigeration request, and compressor will restarting, blower at this time
Also it remains in operation, refrigerator runs the normal operation for returning to normal mode.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
It for member, can also make several improvements without departing from the principle of the present invention, these improvement also should be regarded as of the invention
Protection scope.
Claims (1)
1. a kind of wind cooling refrigerator compressor liquid impact prevention protects control method, it is characterised in that: steps are as follows:
(1) cooling indoor temperature transmitter actual perceived to temperature recovery provide the compressor that refrigeration is requested to refrigerator cooling chamber
When starting point temperature, refrigerator starts again at refrigeration cool-down, compressor booting at this time, fan running；
(2) if cooling indoor temperature transmitter actual perceived to temperature be not up to refrigerator cooling chamber and provide and stop refrigeration request
When compressor shutdown point temperature, by defrost temperature sensor actual perceived on detection cooler to temperature whether be lower than liquid hammer
- 35 DEG C of risk temperature value is to determine whether force to make compressor shutdown, if the practical sense of defrost temperature sensor on detection cooler
The temperature known then forces to make compressor shutdown lower than -35 DEG C of liquid hammer risk temperature value, and compressor shuts down at this time, and fan will
It remains in operation down；
(3) if compressor shutdown, fan running continue 30min, the temperature that cooling indoor temperature transmitter actual perceived arrives is not yet
Reach refrigerator cooling chamber and provide the compressor shutdown point temperature for stopping refrigeration request, freezer compressor will restart to transport at this time
Row, fan will be returned to normal operating mode, operate synchronously with compressor；Refrigerator runs the normal operation shape for returning to normal mode
State.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910632704.3A CN110360779B (en) | 2019-07-14 | 2019-07-14 | Liquid impact prevention protection control method for air-cooled refrigerator compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910632704.3A CN110360779B (en) | 2019-07-14 | 2019-07-14 | Liquid impact prevention protection control method for air-cooled refrigerator compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110360779A true CN110360779A (en) | 2019-10-22 |
| CN110360779B CN110360779B (en) | 2021-07-06 |
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ID=68219375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910632704.3A Active CN110360779B (en) | 2019-07-14 | 2019-07-14 | Liquid impact prevention protection control method for air-cooled refrigerator compressor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201488138U (en) * | 2009-08-28 | 2010-05-26 | 海信科龙电器股份有限公司 | Air conditioner suitable for refrigeration under low-temperature environment |
| CN104132423A (en) * | 2014-07-14 | 2014-11-05 | 美的集团股份有限公司 | Control method and control device for liquid impact prevention for air conditioning system and air conditioning system |
| CN105605875A (en) * | 2016-02-01 | 2016-05-25 | 合肥美的电冰箱有限公司 | Control method and system of electronic freezing refrigerator |
| US20160238293A1 (en) * | 2015-02-18 | 2016-08-18 | Heatcraft Refrigeration Products Llc | Oil line control system |
| CN106288638A (en) * | 2016-08-17 | 2017-01-04 | 合肥华凌股份有限公司 | A kind of control method of refrigerator |
| CN106766479A (en) * | 2016-12-09 | 2017-05-31 | 青岛海尔股份有限公司 | The simple gate refrigerator and its control method of a kind of temperature-changeable |
| CN108507247A (en) * | 2018-05-09 | 2018-09-07 | 中山市实力仕商用设备制造有限公司 | A kind of commercial display cases prevent the control system and its control method of compressor liquid hammer |
-
2019
- 2019-07-14 CN CN201910632704.3A patent/CN110360779B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201488138U (en) * | 2009-08-28 | 2010-05-26 | 海信科龙电器股份有限公司 | Air conditioner suitable for refrigeration under low-temperature environment |
| CN104132423A (en) * | 2014-07-14 | 2014-11-05 | 美的集团股份有限公司 | Control method and control device for liquid impact prevention for air conditioning system and air conditioning system |
| US20160238293A1 (en) * | 2015-02-18 | 2016-08-18 | Heatcraft Refrigeration Products Llc | Oil line control system |
| CN105605875A (en) * | 2016-02-01 | 2016-05-25 | 合肥美的电冰箱有限公司 | Control method and system of electronic freezing refrigerator |
| CN106288638A (en) * | 2016-08-17 | 2017-01-04 | 合肥华凌股份有限公司 | A kind of control method of refrigerator |
| CN106766479A (en) * | 2016-12-09 | 2017-05-31 | 青岛海尔股份有限公司 | The simple gate refrigerator and its control method of a kind of temperature-changeable |
| CN108507247A (en) * | 2018-05-09 | 2018-09-07 | 中山市实力仕商用设备制造有限公司 | A kind of commercial display cases prevent the control system and its control method of compressor liquid hammer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110360779B (en) | 2021-07-06 |
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Address after: 211200 Skyworth electric appliance (Nanjing) Industrial Park, Lishui Economic Development Zone, Nanjing, Jiangsu Province Patentee after: SKYWORTH Electric Co.,Ltd. Address before: SKYWORTH (Nanjing) Industrial Park, 96 Binhuai Avenue, Lishui Economic Development Zone, Nanjing, Jiangsu, 211200 Patentee before: NANJING CHUANGWEI HOUSEHOLD ELECTRONIC APPLIANCES Ltd. |