CN110017625A - A kind of refrigeration system, control method and refrigeration equipment - Google Patents
A kind of refrigeration system, control method and refrigeration equipment Download PDFInfo
- Publication number
- CN110017625A CN110017625A CN201910233951.6A CN201910233951A CN110017625A CN 110017625 A CN110017625 A CN 110017625A CN 201910233951 A CN201910233951 A CN 201910233951A CN 110017625 A CN110017625 A CN 110017625A
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- China
- Prior art keywords
- defrost
- compressor
- evaporator
- temperature
- temperature sensor
- Prior art date
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Links
- 238000005057 refrigeration Methods 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims description 18
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 239000003507 refrigerant Substances 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000003111 delayed effect Effects 0.000 claims 1
- 238000001704 evaporation Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- 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
-
- 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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
-
- 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
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a kind of refrigeration system, including master board and circularly cooling component, the circularly cooling component includes being connected in sequence the first refrigerant circuit by the first evaporator, the first compressor, the first condenser, first throttle element by pipeline;The refrigeration system further includes the interior space temperature sensor being all electrically connected with the master board, the first compressor temperature sensor, the first defrost temperature sensor;The present invention detects the temperature of inner space, compressor, evaporator by multiple temperature sensors, in refrigerative circle system, whether the operating of accurate control condenser fan and evaporator fan, so that the temperature of compressor reaches setting value before needing defrost, to there is enough heats to be transported in evaporator, to still reach defrost deicing effect under conditions of compressor load very little when meeting compared with low ambient temperature.
Description
Technical field
The present invention relates to field of refrigeration, especially a kind of refrigeration system, control method and refrigeration equipment.
Background technique
Single-stage vapor compression refrigeration system is by four refrigeration compressor, condenser, throttle valve and evaporator basic element of character
Composition.It being sequentially connected between them with pipeline, forms a closed system, refrigerant constantly circulates in systems,
Generating state variation carries out heat with the external world and exchanges.
After liquid refrigerant absorbs cooled object heat in evaporator, it is vaporized into steam, the quilt of low-temp low-pressure
Compressor sucking is compressed into after the steam of high pressure-temperature and is discharged into condenser, puts within the condenser to cooling medium (water or air)
Heat, be condensed into highly pressurised liquid, through throttle valve throttling be low-pressure low-temperature refrigerant, be again introduced into evaporator heat absorption vaporization, reach
The purpose of circularly cooling.
Due to being easy to freeze after evaporator long-term work, so refrigeration system is provided with defrost loop, as shown in Figure 1,
Traditional hot gas defrosting system is connected with defrost solenoid valve by pipeline between compressor and evaporator, to by compressor, change
White solenoid valve and evaporator form defrost loop;When needing defrost, defrost solenoid valve is opened, so that generating when compressor operating
Hot gas enter defrost in evaporator from defrost loop.
However, during actual use, if, since compressor load is very light, do not stored up substantially when environment temperature is low
The ice of evaporator knot can not be melted by depositing how many heat, if preferableization can also be had when environment temperature is low by reaching
White deicing effect must use the schemes such as high-power electric heating, keep work input rate excessive, power consumption greatly increases.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of refrigeration system, control method and refrigeration equipments.
Technical solution used in the embodiment of the present invention is as follows:
A kind of refrigeration system, including master board and circularly cooling component, the circularly cooling component include being steamed by first
Hair device, the first compressor, the first condenser, first throttle element are connected in sequence the first refrigerant circuit by pipeline;
First evaporator is provided with the first evaporator fan, and first condenser is provided with the first condenser wind
Machine, first compressor and the first evaporator are provided with return-air duct, and the return-air duct is provided with the first defrost solenoid valve;
The master board is electric with the first compressor, the first evaporator fan, the first condenser fan, the first defrost respectively
Magnet valve is electrically connected to control its work;
The refrigeration system further includes the interior space temperature sensor being all electrically connected with the master board, the first pressure
Contracting machine temperature sensor, the first defrost temperature sensor;
The interior space temperature sensor is used to detect the temperature signal of storage space inside refrigeration system, and described first
Compressor temperature sensor is used to detect the temperature signal of the first compressor, and the first defrost temperature sensor detection first is steamed
Send out the temperature signal of device;
The master board is according to the interior space temperature sensor, the first compressor temperature sensor, the first defrost
The temperature signal of temperature sensor detection controls the first compressor, the first condenser fan, the first evaporator fan, first respectively
The movement of defrost solenoid valve, so that the first evaporator controls the first compressor temperature before needing defrost reaches setting value.
Further, the circularly cooling component further includes by the second evaporator, the second compressor, the second condenser, second
The second refrigerant circuit that restricting element is connected in sequence by pipeline;
Second evaporator is provided with the second evaporator fan, and second condenser is provided with the second condenser wind
Machine, second compressor and the second evaporator are provided with return-air duct, and the return-air duct is provided with the second defrost solenoid valve;
The master board is electric with the second compressor, the second evaporator fan, the second condenser fan, the second defrost respectively
Magnet valve is electrically connected to control its work;
The refrigeration system further includes the second compressor temperature sensor being all electrically connected with the master board, second
Defrost temperature sensor;
The interior space temperature sensor is used to detect the temperature signal of storage space inside refrigeration system, and described second
Compressor temperature sensor is used to detect the temperature signal of the second compressor, and the second defrost temperature sensor detection second is steamed
Send out the temperature signal of device;
The master board is according to the interior space temperature sensor, the second compressor temperature sensor, the second defrost
The temperature signal of temperature sensor detection controls the second compressor, the second condenser fan, the second evaporator fan, second respectively
The movement of defrost solenoid valve, so that the second evaporator controls the second compressor temperature before needing defrost reaches setting value.
A kind of control method of refrigeration system, includes the following steps
Whether the temperature signal of storage space reaches the lower limit value of set temperature inside detection refrigeration system, stops if reaching
Otherwise only refrigeration cycle enters in next step;
Judge whether to reach defrost interval time, enters in next step if reaching, otherwise continue to test inside refrigeration system
The temperature signal of storage space;
Whether detection compressor temperature reaches temperature required when defrost, enters if reaching and stops evaporator wind in next step
Otherwise machine operation stops condenser fan operation;
Start defrost solenoid valve after stopping evaporator fan operation, the hot gas of compressor is transmitted in evaporator and is changed
Frost;
Defrost temperature sensor closes defrost solenoid valve after the completion of detecting defrost.
Further, the refrigeration system has two groups of independences and shares the refrigeration cycle component of same master board, master control
Making sheet, which detects when last cooling time is more than setting time while starting two groups of refrigeration cycle components, freezes, and is less than then
Circulation enables one group of refrigeration cycle component and freezes.
Further, circulation, which enables, first detects last one group specifically enabled when two groups of refrigeration cycle components are freezed
Refrigeration cycle component restarts another group of refrigeration cycle component.
Further, the stopping refrigeration cycle includes stopping compressor and condenser fan.
Further, when the condition that the defrost is completed is that temperature reaches setting value or reaches the defrost of setting in evaporator
Between.
Further, delay M seconds restart evaporator fan after closing defrost solenoid valve.
A kind of refrigeration equipment including refrigeration equipment ontology and is mounted on the refrigeration system as above stated in refrigeration equipment ontology
System.
A kind of refrigeration equipment, including refrigeration equipment ontology and it is mounted on the intrinsic refrigeration system of refrigeration equipment, it is described
Refrigeration system executes such as above-mentioned control method.
Beneficial effects of the present invention:
The embodiment of the present invention detects the temperature of inner space, compressor, evaporator by multiple temperature sensors, is making
During SAPMAC method, accurately whether the operating of control condenser fan and evaporator fan, so that the temperature of compressor is needing
Reach setting value before defrost, to there are enough heats to be transported in evaporator, to meet compressor when compared with low ambient temperature
Still reach defrost deicing effect under conditions of load very little.
Detailed description of the invention
A specific embodiment of the invention is described further with reference to the accompanying drawing.
Fig. 1 is the schematic illustration of traditional hot gas defrosting system;
Fig. 2 is the schematic illustration of first embodiment of the invention;
Fig. 3 is the schematic illustration of second embodiment of the invention;
Fig. 4 is the work flow diagram of second embodiment of the invention.
Specific embodiment
As shown in Fig. 2, being the first embodiment of the technical program, a kind of refrigeration system, including master board and circulation system
Cold component, the circularly cooling component include being led to by the first evaporator, the first compressor, the first condenser, first throttle element
Piping is connected in sequence the first refrigerant circuit;
First evaporator is provided with the first evaporator fan, and first condenser is provided with the first condenser wind
Machine, first compressor and the first evaporator are provided with return-air duct, and the return-air duct is provided with the first defrost solenoid valve;
The master board is electric with the first compressor, the first evaporator fan, the first condenser fan, the first defrost respectively
Magnet valve is electrically connected to control its work;
The refrigeration system further includes the interior space temperature sensor being all electrically connected with the master board, the first pressure
Contracting machine temperature sensor, the first defrost temperature sensor;
The interior space temperature sensor is used to detect the temperature signal of storage space inside refrigeration system, and described first
Compressor temperature sensor is used to detect the temperature signal of the first compressor, and the first defrost temperature sensor detection first is steamed
Send out the temperature signal of device;
The master board is according to the interior space temperature sensor, the first compressor temperature sensor, the first defrost
The temperature signal of temperature sensor detection controls the first compressor, the first condenser fan, the first evaporator fan, first respectively
The movement of defrost solenoid valve, so that the first evaporator controls the first compressor temperature before needing defrost reaches setting value.
The master board is additionally provided with blower current detecting unit and compressor current detection unit difference detection blower fan
Whether worked normally with compressor, reports failure if being more than setting electric current value.
As shown in figure 3, being the second embodiment of the technical program, the present embodiment is on the basis of first embodiment, by institute
It states circularly cooling component and adds and pipeline is passed through successively by the second evaporator, the second compressor, the second condenser, the second restricting element
The second refrigerant circuit being formed by connecting;
Second evaporator is provided with the second evaporator fan, and second condenser is provided with the second condenser wind
Machine, second compressor and the second evaporator are provided with return-air duct, and the return-air duct is provided with the second defrost solenoid valve;
The master board is electric with the second compressor, the second evaporator fan, the second condenser fan, the second defrost respectively
Magnet valve is electrically connected to control its work;
The refrigeration system further includes the second compressor temperature sensor being all electrically connected with the master board, second
Defrost temperature sensor;
The interior space temperature sensor is used to detect the temperature signal of storage space inside refrigeration system, and described second
Compressor temperature sensor is used to detect the temperature signal of the second compressor, and the second defrost temperature sensor detection second is steamed
Send out the temperature signal of device;
The master board is according to the interior space temperature sensor, the second compressor temperature sensor, the second defrost
The temperature signal of temperature sensor detection controls the second compressor, the second condenser fan, the second evaporator fan, second respectively
The movement of defrost solenoid valve, so that the second evaporator controls the second compressor temperature before needing defrost reaches setting value.
Since tradition determines frequency single compressor refrigeration system when environment temperature is relatively low, high frequent starting efficiency is very
Low, compressor is also easily damaged;The present embodiment uses two independent refrigeration systems, is controlled with a master board.In environment
When temperature is relatively low, reaches lower limit temperature if the time required for starting refrigeration every time is very short, will be recycled wherein
One compressor refrigeration, comparatively the number of starts can reduce very much, and the more efficient protection to compressor is also more preferable.
As shown in figure 4, the technical program further includes a kind of control method of refrigeration system, include the following steps
Whether the temperature signal of storage space reaches the lower limit value of set temperature inside detection refrigeration system, stops if reaching
Otherwise only refrigeration cycle enters in next step;
Judge whether to reach defrost interval time, enters in next step if reaching, otherwise continue to test inside refrigeration system
The temperature signal of storage space;
Whether detection compressor temperature reaches temperature required when defrost, enters if reaching and stops evaporator wind in next step
Otherwise machine operation stops condenser fan operation (reducing refrigerant exothermal efficiency);
Start defrost solenoid valve after stopping evaporator fan operation, the hot gas of compressor is transmitted in evaporator and is changed
Frost;
Defrost temperature sensor closes defrost solenoid valve after the completion of detecting defrost, wherein the condition that the defrost is completed is
Temperature reaches setting value or reaches the defrost time of setting in evaporator.
Delay M seconds restart evaporator fan after closing defrost solenoid valve.
Correspondingly, the technical program is followed suitable for the refrigeration that refrigeration system has two groups of independences and shares same master board
Ring assemblies, master board detects when last cooling time is more than setting time starts two groups of refrigeration cycle component systems simultaneously
It is cold, it is less than, recycles one group of refrigeration cycle component of enabling and freeze.
In order to accurately reduce the initiation culture of compressor, circulation is enabled when two groups of refrigeration cycle components are freezed and is first detected
The last one group of refrigeration cycle component specifically enabled out, restarts another group of refrigeration cycle component, avoids continuously starting same
Compressor.
Specifically, the stopping refrigeration cycle includes stopping compressor and condenser fan, unnecessary electric energy wave is reduced
Take.
On the basis of above scheme, the technical program further includes a kind of refrigeration equipment, including refrigeration equipment ontology and
It is mounted on the refrigeration system as above stated in refrigeration equipment ontology.
On the basis of above scheme, the technical program further includes a kind of refrigeration equipment, including refrigeration equipment ontology and
It is mounted on the intrinsic refrigeration system of refrigeration equipment, the refrigeration system executes such as above-mentioned control method.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to above embodiment, as long as with
Essentially identical means realize that the technical solution of the object of the invention belongs within protection scope of the present invention.
Claims (10)
1. a kind of refrigeration system, including master board and circularly cooling component, the circularly cooling component includes by the first evaporation
Device, the first compressor, the first condenser, first throttle element are connected in sequence the first refrigerant circuit by pipeline;
First evaporator is provided with the first evaporator fan, and first condenser is provided with the first condenser fan, institute
It states the first compressor and the first evaporator is provided with return-air duct, the return-air duct is provided with the first defrost solenoid valve;
The master board respectively with the first compressor, the first evaporator fan, the first condenser fan, the first defrost solenoid valve
It is electrically connected to control its work;
It is characterized by: the refrigeration system further includes that the interior space temperature being all electrically connected with the master board senses
Device, the first compressor temperature sensor, the first defrost temperature sensor;
The interior space temperature sensor is used to detect the temperature signal of storage space inside refrigeration system, first compression
Machine temperature sensor is used to detect the temperature signal of the first compressor, and the first defrost temperature sensor detects the first evaporator
Temperature signal;
The master board is according to the interior space temperature sensor, the first compressor temperature sensor, the first defrost temperature
The temperature signal of sensor detection controls the first compressor, the first condenser fan, the first evaporator fan, the first defrost respectively
The movement of solenoid valve, so that the first evaporator controls the first compressor temperature before needing defrost reaches setting value.
2. a kind of refrigeration system according to claim 1, it is characterised in that: the circularly cooling component further includes by second
The second refrigerant circuit that evaporator, the second compressor, the second condenser, the second restricting element are connected in sequence by pipeline;
Second evaporator is provided with the second evaporator fan, and second condenser is provided with the second condenser fan, institute
It states the second compressor and the second evaporator is provided with return-air duct, the return-air duct is provided with the second defrost solenoid valve;
The master board respectively with the second compressor, the second evaporator fan, the second condenser fan, the second defrost solenoid valve
It is electrically connected to control its work;
The refrigeration system further includes the second compressor temperature sensor being all electrically connected with the master board, the second defrost
Temperature sensor;
The interior space temperature sensor is used to detect the temperature signal of storage space inside refrigeration system, second compression
Machine temperature sensor is used to detect the temperature signal of the second compressor, and the second defrost temperature sensor detects the second evaporator
Temperature signal;
The master board is according to the interior space temperature sensor, the second compressor temperature sensor, the second defrost temperature
The temperature signal of sensor detection controls the second compressor, the second condenser fan, the second evaporator fan, the second defrost respectively
The movement of solenoid valve, so that the second evaporator controls the second compressor temperature before needing defrost reaches setting value.
3. a kind of control method of refrigeration system, it is characterised in that: include the following steps
Whether the temperature signal of storage space reaches the lower limit value of set temperature inside detection refrigeration system, stops making if reaching
Otherwise SAPMAC method enters in next step;
Judge whether to reach defrost interval time, enter in next step if reaching, otherwise continues to test storing inside refrigeration system
The temperature signal in space;
Whether detection compressor temperature reaches temperature required when defrost, enters if reaching and stops evaporator fan fortune in next step
Otherwise row stops condenser fan operation;
Start defrost solenoid valve after stopping evaporator fan operation, the hot gas of compressor is transmitted in evaporator and carries out defrost;
Defrost temperature sensor closes defrost solenoid valve after the completion of detecting defrost.
4. a kind of control method of refrigeration system according to claim 3, it is characterised in that: the refrigeration system has two groups
Independence and the refrigeration cycle component for sharing same master board, when master board detects last cooling time more than setting time
Start two groups of refrigeration cycle components simultaneously to freeze, be less than, recycles one group of refrigeration cycle component of enabling and freeze.
5. a kind of control method of refrigeration system according to claim 4, it is characterised in that: circulation enables two groups of refrigeration cycle
The last one group of refrigeration cycle component specifically enabled is first detected when component is freezed, and restarts another group of refrigeration cycle group
Part.
6. a kind of control method of refrigeration system according to claim 3, it is characterised in that: the stopping refrigeration cycle includes
Stop compressor and condenser fan.
7. a kind of control method of refrigeration system according to claim 3, it is characterised in that: the condition that the defrost is completed is
Temperature reaches setting value or reaches the defrost time of setting in evaporator.
8. a kind of control method of refrigeration system according to claim 3, it is characterised in that: be delayed after closing defrost solenoid valve
M seconds restart evaporator fan.
9. a kind of refrigeration equipment, it is characterised in that: including refrigeration equipment ontology and be mounted in refrigeration equipment ontology such as right
It is required that refrigeration system described in 1 or 2.
10. a kind of refrigeration equipment, it is characterised in that: including refrigeration equipment ontology and be mounted on the intrinsic refrigeration of refrigeration equipment
System, the refrigeration system execute the control method as described in claim 3-8 is any.
Priority Applications (1)
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CN201910233951.6A CN110017625A (en) | 2019-03-26 | 2019-03-26 | A kind of refrigeration system, control method and refrigeration equipment |
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CN201910233951.6A CN110017625A (en) | 2019-03-26 | 2019-03-26 | A kind of refrigeration system, control method and refrigeration equipment |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112254429A (en) * | 2020-10-29 | 2021-01-22 | 北京浩爽制冷工程科技有限公司 | Control system of ultralow temperature type freezer |
CN112304017A (en) * | 2020-10-27 | 2021-02-02 | 深圳市智莱科技股份有限公司 | Refrigerator control method, refrigerator and computer readable storage medium |
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CN108151348A (en) * | 2017-12-06 | 2018-06-12 | 西安交通大学 | A kind of double-compressor refrigeration system and control method for single space refrigeration |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112304017A (en) * | 2020-10-27 | 2021-02-02 | 深圳市智莱科技股份有限公司 | Refrigerator control method, refrigerator and computer readable storage medium |
CN112304017B (en) * | 2020-10-27 | 2023-09-08 | 深圳市智莱科技股份有限公司 | Refrigerator control method, refrigerator and computer readable storage medium |
CN112254429A (en) * | 2020-10-29 | 2021-01-22 | 北京浩爽制冷工程科技有限公司 | Control system of ultralow temperature type freezer |
CN112254429B (en) * | 2020-10-29 | 2022-07-22 | 北京浩爽制冷工程科技有限公司 | Control system of ultralow-temperature type refrigeration house |
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