CN109489335A - Refrigerator blower control method - Google Patents
Refrigerator blower control method Download PDFInfo
- Publication number
- CN109489335A CN109489335A CN201710823938.7A CN201710823938A CN109489335A CN 109489335 A CN109489335 A CN 109489335A CN 201710823938 A CN201710823938 A CN 201710823938A CN 109489335 A CN109489335 A CN 109489335A
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- Prior art keywords
- fan
- wind speed
- current
- compressor
- change rate
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000001704 evaporation Methods 0.000 claims abstract description 58
- 230000008859 change Effects 0.000 claims abstract description 50
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 230000008020 evaporation Effects 0.000 description 51
- 238000009833 condensation Methods 0.000 description 12
- 230000005494 condensation Effects 0.000 description 12
- 238000005057 refrigeration Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 230000036760 body temperature Effects 0.000 description 6
- 238000004134 energy conservation Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- 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
-
- 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
- F25B2600/00—Control issues
- F25B2600/11—Fan speed control
- F25B2600/111—Fan speed control of condenser fans
-
- 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
- F25B2600/00—Control issues
- F25B2600/11—Fan speed control
- F25B2600/112—Fan speed control of evaporator fans
-
- 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
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
-
- 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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/02—Sensors detecting door opening
-
- 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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
本发明公开了一种冷柜风机控制方法，包括以下步骤：风速划分步骤，将风速档位进行划分，包括高风档和低风档；冷柜风机风速控制步骤，包括：（1）、检测开门状态，若当前门体被打开，控制蒸发风机以低风档运行或者停止运行，若当前门体为有效关闭，则执行步骤（2）；（2）、检测柜体内温度，计算温度变化率，若温度变化率大于设定变化率阈值，则控制蒸发风机以低风档运行，否则，控制蒸发风机以高风档运行。本发明的控制方法，通过分别检测门体开关状态以及温度变化率，相应的调节蒸发风机以及冷凝风机的风速，开门状态时控制蒸发风机以低风档运行或者停止运行以实现节能；当关门状态根据温度变化率，控制蒸发风机和冷凝风机，以提高换热效率。
The invention discloses a cooling cabinet fan control method, which includes the following steps: a wind speed division step, dividing the wind speed gears, including a high wind gear and a low wind gear; , if the current door is opened, control the evaporative fan to run at a low wind speed or stop running, if the current door is effectively closed, perform step (2); (2), detect the temperature in the cabinet, calculate the temperature change rate, if If the temperature change rate is greater than the set change rate threshold, the evaporative fan is controlled to run at a low wind gear, otherwise, the evaporative fan is controlled to run at a high wind gear. In the control method of the present invention, by detecting the opening and closing state of the door body and the temperature change rate respectively, the wind speed of the evaporating fan and the condensing fan is adjusted accordingly, and the evaporating fan is controlled to run at a low wind speed or stop running when the door is open to realize energy saving; when the door is closed According to the temperature change rate, the evaporating fan and the condensing fan are controlled to improve the heat exchange efficiency.
Description
Technical field
The present invention relates to a kind of refrigeration equipment control technology fields, specifically, being to be related to a kind of refrigerator air-blower control side
Method.
Background technique
Existing refrigerator is only switched on using blower operating mode, shut down two states, and condensation fan work is same with compressor
Step, blower operates when the compressor is operated, and blower shuts down when the compressor is stopped, this operating mode mainly stops in compressor
By natural heat dissipation mode, radiating rate is slow for heat dissipation after only working；Evaporation fan working method is often to turn with power supply, and work shape
State is single, and fan operation state cannot be adjusted according to refrigeration work state, and energy consumption is big.
Summary of the invention
The present invention only has booting, shutdown two states to solve the blower operating mode of existing refrigerator, and there are energy consumptions
Big technical problem proposes a kind of refrigerator blower control method, can solve the above problem.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following scheme:
A kind of refrigerator blower control method, comprising the following steps:
Wind speed partiting step, wind-speed gear is divided, and includes at least high wind file and low wind file, and the high wind file includes at least
One air speed value t11, the low wind file include at least one air speed value t21, wherein t11 > t21 > 0；
Refrigerator blower blast velocity control step, comprising:
(1), detect door opening state, if when front door body is opened, control evaporation fan with low wind file run or it is out of service, if
When front door body be effectively close, then follow the steps (2)；
(2), detecting box body temperature calculates rate of temperature change, if rate of temperature change is greater than setting change rate threshold value, controls steaming
Hair blower is run with low wind file, and otherwise, control evaporation fan is run with high wind file.
Further, in step (1), judge that when front door body be the method effectively closed are as follows: calculating current time is apart from upper
The duration at secondary moment of closing the door, current time are greater than setting duration threshold value apart from the duration at shutdown moment last time, then judge that door body is
Effectively close.
Further, in step (1), if further including further judging the current fortune of evaporation fan when front door body is opened
Row state step, if evaporation fan is controlled evaporation fan and run with low wind file currently with the operation of high wind file, if evaporation wind
Machine is currently with low wind file operation or out of service, the then operating status for keeping evaporation fan current.
Further, step (1) if in when front door body be effectively close, further include judging compressor current operating conditions
Step is controlled evaporation fan and condensation fan and is run respectively with high wind file if compressor is currently running, no to then follow the steps
(2).
Further, the high wind file includes two air speed values t11, t12, wherein t11 < t12, the low wind file include
Two air speed values t21, t22, wherein t21 > t22.
Further, before the step of judging compressor current operating conditions in step (1), further include judge current daytime/
The step of night mode, judges compressor current operating conditions, if compressor is out of service, holds if being currently Night
Row step (21), detecting box body temperature calculate rate of temperature change, if rate of temperature change is greater than setting change rate threshold value, control
Evaporation fan processed is run with the air speed value t22 of low wind file, otherwise, is controlled evaporation fan and is run with the air speed value t11 of high wind file.
Further, in step (1), if being currently day mode, compressor current operating conditions are judged, if compressor
It is out of service, (22), detecting box body temperature are thened follow the steps, rate of temperature change is calculated, if rate of temperature change is greater than setting and becomes
Rate threshold value is then controlled evaporation fan and is run with the air speed value t21 of low wind file, otherwise, controls evaporation fan with the wind of high wind file
Speed value t12 operation.
Further, in step (1), if being currently Night, compressor current operating conditions are judged, if compressor
It is currently running, then controls evaporation fan and condensation fan and run respectively with the air speed value t11 of high wind file.
Further, in step (1), if being currently day mode, compressor current operating conditions are judged, if compressor
It is currently running, then controls evaporation fan and condensation fan and run respectively with the air speed value t12 of high wind file.
Compared with prior art, the advantages and positive effects of the present invention are: refrigerator blower control method of the invention, passes through
Door body switch state and rate of temperature change are detected respectively, and the corresponding wind speed for adjusting evaporation fan and condensation fan opens the door
It when state, is run by control evaporation fan with low wind file or out of service, reduces cooling capacity and be lost to realize energy conservation；Work as shutdown
When state and big rate of temperature change, judge that load capacity is smaller in case, the cooling capacity flowing space is big, adjustment evaporation fan low speed operation
Product refrigeration and energy conservation can be met；When rate of temperature change is small, judge that load capacity is larger in case, the cooling capacity flowing space is small, adjusts
Rectification campaign machine high-speed cruising, reaches fast-refrigerating effect.
After the detailed description of embodiment of the present invention is read in conjunction with the figure, the other features and advantages of the invention will become more
Add clear.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the electric-control system figure of refrigerator corresponding to refrigerator blower control method proposed by the invention；
Fig. 2 is a kind of embodiment flow chart of refrigerator blower control method proposed by the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one, the present embodiment propose a kind of refrigerator blower control method, as shown in Figure 1, to be cold in the present embodiment
The electric-control system figure of cabinet, the automatically controlled refrigeration system of refrigerator include at least controller, temperature-sensing probe, heater strip, evaporation fan, condensating wind
Machine, compressor.Controller receives temperature-sensing probe temperature, controls refrigeration compressor, fan operation and heater defrost, wherein blower
Operation part increases speed controling signal end, for controlling the revolving speed of evaporation fan, condensation fan.As shown in Fig. 2, the present embodiment
Refrigerator blower control method the following steps are included:
Wind speed partiting step, wind-speed gear is divided, and includes at least high wind file and low wind file, and high wind file includes at least one
Air speed value t11, low wind file include at least one air speed value t21, wherein t11 > t21 > 0；
Refrigerator blower blast velocity control step, comprising:
S1, detection door opening state, if when front door body is opened, control evaporation fan with low wind file run or it is out of service, if
When front door body be effectively close, then follow the steps S2；
S2, detecting box body temperature calculate rate of temperature change, if rate of temperature change is greater than setting change rate threshold value, control steaming
Hair blower is run with low wind file, and otherwise, control evaporation fan is run with high wind file.Wherein, change rate threshold value is set as constant, is mentioned
In preceding write-in control program.
When refrigerator design has energy conservation or Night or for a long time without door opening state, cooling capacity, during which will evaporation without loss in cabinet
The operation of blower low speed can be effectively energy saving, if detect door opening action, is run or is stopped with low wind file by control evaporation fan
It only runs, reduces cooling capacity and be lost to realize energy conservation；Or Night terminates, and adjusts the normal high-speed cruising of evaporation fan.Condensating wind
Machine is mainly condenser and compressor heat dissipation, and evaporation fan is mainly used for exchanging heat, and controller is controllable to the wind speed of evaporation fan, is steamed
Hair blower is primarily involved in cabinet intercooling cycle, when temperature change is very fast (change rate is big), judges that load capacity is smaller in case, cooling capacity flowing
Space is big, and adjustment evaporation fan low speed operation can meet product refrigeration and energy conservation；When the relatively slow (change rate of detection temperature change
It is small), judge that load capacity is larger in case, the cooling capacity flowing space is small, adjusts blower high-speed cruising, reaches fast-refrigerating effect.
Refrigerator blower control method of the invention, by detecting door body switch state and rate of temperature change respectively, accordingly
Adjusting evaporation fan wind speed, if when front door body be close, control blower is carried out according to rate of temperature change, to reach energy saving effect
Meet the maximization of refrigerator refrigerating efficiency while fruit.
Since refrigerator may be frequently opened and closed when using peak period, causes blower frequently to adjust wind speed, be unfavorable for blower
Service life, in step S1, when front door body is that the judgment method effectively closed is, calculated current time apart from last time at closing time
The duration at quarter, current time are greater than setting duration threshold value apart from the duration at shutdown moment last time, are then judged as that door body is effectively closed.
By calculating current time apart from the duration at shutdown moment last time, set if current time is greater than apart from the duration at shutdown moment last time
Periodically long threshold value without door opening action, illustrates to belong to and is chronically at shutdown state, controlled according to rate of temperature change for such as 2 hours
Adjust blower wind speed.Wherein, duration threshold value is set as constant, in the program of write-in control in advance.
In order to reduce the start and stop rate of blower, the switching transition between its service life, and different wind speed is improved, is prevented short
It substantially exchanges speed fan in time to cause to damage, in step S1, if further including that further judgement is steamed when front door body is opened
The current operating status step of blower is sent out, if evaporation fan controls evaporation fan currently with the operation of high wind file with low wind
Shelves operation, if evaporation fan currently with low wind file operation or it is out of service, keep the operation shape that evaporation fan is current
State.If control evaporation fan is run with low wind file, the operating status that evaporation fan is current is kept, control command can also be reduced
Quantity.
In order to increase the adjustable extent of each wind file air speed value, high wind file includes two air speed values t11, t12, wherein t11 <
T12, low wind file include two air speed values t21, t22, wherein t21 > t22.Wherein, the air speed value of high wind file and low wind file is unlimited
In above-mentioned each two, can be arranged according to actual needs several more.
If working as front door body in step S1 is effectively to close, further include the steps that judging compressor current operating conditions, if pressure
Contracting machine is currently running, then controls evaporation fan and condensation fan and run respectively with high wind file, no to then follow the steps S2.Compressor is just
Often when operation, evaporation fan high-speed cruising is conducive to the uniformity for improving in-cabinet temperature to increase cooling capacity flowing.
Use on daytime is concentrated on according to its handling characteristics for some commercial display cases, and night is rarely employed, in order to save
About energy consumption and the step of be set with day night mode, compressor current operating conditions judged in step S1 before, further include that judgement is worked as
The step of preceding day night mode, judges compressor current operating conditions if being currently Night, if compressor is out of service,
S21, detecting box body temperature are thened follow the steps, rate of temperature change is calculated, if rate of temperature change is greater than setting change rate threshold value,
It controls evaporation fan to run with the air speed value t22 of low wind file, otherwise, controls evaporation fan and run with the air speed value t11 of high wind file.
That is, when being in Night, and compressor is out of service, if rate of temperature change is greater than setting change rate threshold value, bears in case
Carrying capacity is smaller, and the cooling capacity flowing space is big, and product refrigeration and energy conservation can be met by adjusting evaporation fan with low wind file operation, meanwhile,
Since Night loss of refrigeration capacity is small, load capacity is smaller in cabinet, therefore, controls evaporation fan with relatively smaller in low wind file
Air speed value t22 operation, to reach energy-saving effect, otherwise, if rate of temperature change be less than setting change rate threshold value, judge in case bear
Carrying capacity is larger, and the cooling capacity flowing space is small, and the high wind file operation of adjustment blower reaches fast-refrigerating effect, simultaneously as Night
Loss of refrigeration capacity is small, and load capacity is smaller in cabinet, therefore, controls evaporation fan with the relatively smaller air speed value t11 in high wind file
Operation, to reach energy-saving effect.
In step S1, if being currently Night, compressor current operating conditions are judged, if compressor is currently running,
It then controls evaporation fan and condensation fan and is run respectively with the low air speed value t11 of high wind file.That is, when being in Night,
When compressor operation simultaneously, run respectively with high wind file to improve heat exchange efficiency control evaporation fan and condensation fan, still,
Since Night loss of refrigeration capacity is small, load capacity is smaller in cabinet, therefore, controls evaporation fan and condensation fan respectively with high wind file
In relatively smaller air speed value t11 operation, to reach energy-saving effect.
In step S1, if being currently day mode, compressor current operating conditions are judged, if compressor is out of service,
S22, detecting box body temperature are thened follow the steps, rate of temperature change is calculated, if rate of temperature change is greater than setting change rate threshold value,
It controls evaporation fan to run with the air speed value t21 of low wind file, otherwise, controls evaporation fan and run with the air speed value t12 of high wind file.
That is, when due to day mode, refrigerator frequency of use is high, frequently switches on, therefore cold consumption is big, in corresponding cabinet load capacity compared with
Greatly, in order to improve heat exchange efficiency, when rate of temperature change is greater than setting change rate threshold value, evaporation fan is controlled with the height of low wind file
Air speed value t21 operation, due to belonging to low wind file, while meeting energy saving requirement.It is greater than setting change rate threshold value in rate of temperature change
When, it controls evaporation fan and is run with the high wind speed value t21 of low wind file, to meet refrigeration demand, reach fast-refrigerating effect.
In step S1, if being currently day mode, compressor current operating conditions are judged, if compressor is currently running,
It then controls evaporation fan and condensation fan and is run respectively with the air speed value t12 of high wind file.Namely when day mode, refrigerator uses frequency
Rate is high, frequently switches on, therefore cold consumption is big, load capacity is larger in corresponding cabinet, if compressor is currently running at this time, in order to improve
Heat exchange efficiency is controlled evaporation fan and condensation fan and is run respectively with the high wind speed value t12 of high wind file, to meet refrigeration demand, is reached
To fast-refrigerating effect.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the those of ordinary skill in domain is made within the essential scope of the present invention, also should belong to this hair
Bright protection scope.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710823938.7A CN109489335B (en) | 2017-09-13 | 2017-09-13 | Refrigerator fan control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710823938.7A CN109489335B (en) | 2017-09-13 | 2017-09-13 | Refrigerator fan control method |
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| CN109489335A true CN109489335A (en) | 2019-03-19 |
| CN109489335B CN109489335B (en) | 2020-12-25 |
Family
ID=65687976
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| CN201710823938.7A Active CN109489335B (en) | 2017-09-13 | 2017-09-13 | Refrigerator fan control method |
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Cited By (9)
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| CN111854273A (en) * | 2019-04-25 | 2020-10-30 | 博西华电器（江苏）有限公司 | Refrigeration appliance, control method and device thereof, and computer readable storage medium |
| CN112066631A (en) * | 2019-06-11 | 2020-12-11 | 青岛海尔特种电冰柜有限公司 | Refrigerator fan control method |
| CN113693403A (en) * | 2021-08-24 | 2021-11-26 | 珠海格力电器股份有限公司 | Closed refrigeration display cabinet control method and device and closed refrigeration display cabinet |
| CN114234548A (en) * | 2021-12-22 | 2022-03-25 | 珠海格力电器股份有限公司 | Refrigerator temperature fluctuation control method, data processing method and device and refrigerator |
| CN114279070A (en) * | 2021-12-20 | 2022-04-05 | 珠海格力电器股份有限公司 | Control method and device of air conditioning system and air conditioning system |
| CN114562846A (en) * | 2020-11-27 | 2022-05-31 | 青岛海尔电冰箱有限公司 | Control method of refrigeration and freezing equipment and refrigeration and freezing equipment |
| CN115111872A (en) * | 2021-03-18 | 2022-09-27 | 青岛海尔电冰箱有限公司 | Refrigeration device control method |
| CN115773628A (en) * | 2022-12-08 | 2023-03-10 | 珠海格力电器股份有限公司 | Rotating speed control method and refrigeration equipment |
| CN116045597A (en) * | 2022-12-20 | 2023-05-02 | 珠海格力电器股份有限公司 | Refrigerator control method and device, electronic equipment and storage medium |
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| CN111854273A (en) * | 2019-04-25 | 2020-10-30 | 博西华电器（江苏）有限公司 | Refrigeration appliance, control method and device thereof, and computer readable storage medium |
| CN112066631A (en) * | 2019-06-11 | 2020-12-11 | 青岛海尔特种电冰柜有限公司 | Refrigerator fan control method |
| CN114562846A (en) * | 2020-11-27 | 2022-05-31 | 青岛海尔电冰箱有限公司 | Control method of refrigeration and freezing equipment and refrigeration and freezing equipment |
| CN115111872A (en) * | 2021-03-18 | 2022-09-27 | 青岛海尔电冰箱有限公司 | Refrigeration device control method |
| CN115111872B (en) * | 2021-03-18 | 2023-06-16 | 青岛海尔电冰箱有限公司 | Control method of refrigeration unit |
| CN113693403A (en) * | 2021-08-24 | 2021-11-26 | 珠海格力电器股份有限公司 | Closed refrigeration display cabinet control method and device and closed refrigeration display cabinet |
| CN114279070A (en) * | 2021-12-20 | 2022-04-05 | 珠海格力电器股份有限公司 | Control method and device of air conditioning system and air conditioning system |
| CN114234548A (en) * | 2021-12-22 | 2022-03-25 | 珠海格力电器股份有限公司 | Refrigerator temperature fluctuation control method, data processing method and device and refrigerator |
| CN115773628A (en) * | 2022-12-08 | 2023-03-10 | 珠海格力电器股份有限公司 | Rotating speed control method and refrigeration equipment |
| CN116045597A (en) * | 2022-12-20 | 2023-05-02 | 珠海格力电器股份有限公司 | Refrigerator control method and device, electronic equipment and storage medium |
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