CN110542276A - refrigerator and control method thereof - Google Patents
refrigerator and control method thereof Download PDFInfo
- Publication number
- CN110542276A CN110542276A CN201810531678.0A CN201810531678A CN110542276A CN 110542276 A CN110542276 A CN 110542276A CN 201810531678 A CN201810531678 A CN 201810531678A CN 110542276 A CN110542276 A CN 110542276A
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- temperature
- zone chamber
- temperature zone
- evaporator
- refrigerating
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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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
The invention provides a control method of a refrigerator, which comprises the following steps: judging whether the refrigerating temperature zone chamber needs to be refrigerated or not; when the refrigerating temperature zone chamber needs to be refrigerated, judging whether the temperature of the evaporator is lower than the set temperature of the refrigerating temperature zone chamber or not; and when the temperature of the evaporator is lower than the set temperature of the refrigerating temperature zone chamber, starting the fan to work and not starting the compressor to work. Therefore, the residual cold of the evaporator is sent to the refrigerating temperature zone chamber to cool the refrigerating temperature zone chamber, so that the residual cold of the evaporator is fully utilized, and the energy consumption of the refrigerator is reduced. The invention also provides a refrigerator working according to the control method.
Description
Technical Field
the invention relates to the technical field of refrigerators, in particular to a household refrigerator and a control method thereof.
Background
The air-cooled refrigerator can keep food fresh, prolong the storage time of the food and improve the edible safety of the food, and is a necessary household appliance. The existing air-cooled refrigerator generally comprises at least a refrigerating chamber and a freezing chamber, cold air cooled by an evaporator directly flows into the refrigerating chamber and the freezing chamber through air ducts respectively, and the refrigerating chamber and the freezing chamber are provided with air outlets for the cold air to flow into respectively. A cold air circulation manner for cooling the refrigerating chamber and the freezing chamber by a common evaporator has been disclosed in the prior art. Particularly, when refrigerating a refrigerating compartment, it is required to further improve how to control a cooling air circulation manner more preferably to reduce power consumption and improve refrigerating efficiency.
Disclosure of Invention
At least one problem to be solved by the present invention is the problem of how to further optimize the operation control of the refrigerator at least to achieve a reduction of energy consumption.
in order to solve the above problems, the present invention provides a method for controlling a refrigerator, the refrigerator including: a freezing temperature zone chamber and a refrigerating temperature zone chamber for storing articles; a compressor and an evaporator for cooling the freezing temperature zone chamber and the refrigerating temperature zone chamber; a fan for sending the cold air cooled by the evaporator to the freezing temperature zone chamber and the refrigerating temperature zone chamber; the control method comprises the following steps:
Judging whether the refrigerating temperature zone chamber needs to be refrigerated or not;
When the refrigerating temperature zone chamber needs to be refrigerated, judging whether the temperature of the evaporator is lower than the set temperature of the refrigerating temperature zone chamber or not;
And when the temperature of the evaporator is lower than the set temperature of the refrigerating temperature zone chamber, starting the fan to work and not starting the compressor to work.
So when cold-stored temperature zone room need independently refrigerate, can start the fan and do not start the compressor temporarily, send the remaining cold volume of evaporimeter to cold-stored temperature zone room in order to cool off it to make full use of the remaining cold volume of evaporimeter reduces the refrigerator energy consumption.
in addition, before starting the fan, whether the temperature of the evaporator is lower than the temperature of the cold storage temperature zone chamber is judged firstly, whether the evaporator has enough residual cold quantity is determined, the condition that the fan is started blindly but the insufficient residual cold quantity of the evaporator can be utilized is avoided, the effect of reducing energy consumption cannot be achieved, and the energy consumption is increased on the contrary.
Preferably, the control method further includes the steps of:
when the difference value obtained by subtracting the temperature of the evaporator from the set temperature of the refrigerating temperature zone chamber is greater than or equal to a preset temperature difference value, the fan is started to work and the compressor is not started to work.
Whether the temperature of the evaporator is far lower than the temperature of the cold storage temperature zone chamber or not is further judged, whether the evaporator has enough residual cold quantity or not is determined, the condition that the fan is started blindly but the residual cold quantity of the evaporator is not enough can be utilized is avoided, the effect of reducing energy consumption cannot be achieved, and the energy consumption can be increased on the contrary.
Preferably, the control method further includes the steps of:
and after the step of starting the fan and not starting the compressor to work, continuously judging whether the temperature of the refrigerating temperature zone chamber reaches the set temperature or not.
preferably, the control method further includes the steps of:
And when the temperature of the refrigerating temperature zone chamber reaches the set temperature, stopping the fan.
Preferably, the control method further includes the steps of:
and when the temperature of the refrigerating temperature zone chamber is judged to be still lower than the set temperature, continuously judging whether the temperature of the evaporator is still lower than the set temperature of the refrigerating temperature zone chamber or whether the difference value of the set temperature of the refrigerating temperature zone chamber minus the temperature of the evaporator is larger than or equal to a preset temperature difference value.
Preferably, the control method further includes the steps of:
And when the temperature of the evaporator is not lower than the set temperature of the refrigerating temperature zone chamber, or when the difference value obtained by subtracting the temperature of the evaporator from the set temperature of the refrigerating temperature zone chamber is smaller than the preset temperature difference value, starting the compressor to work.
Preferably, the refrigerator further comprises a damper to control the supply of air from the evaporator to the freezing temperature zone chamber and/or the refrigerating temperature zone chamber; the control method further comprises the following steps:
when the fan is started to work and the compressor is not started to work, the air door closes a passage for supplying air from the evaporator to the freezing temperature zone chamber.
When the residual cold of the evaporator is used for cooling the refrigerating temperature zone chamber, the air door correspondingly closes a channel for supplying air from the evaporator to the freezing temperature zone chamber, so that the residual cold of the evaporator is intensively used for cooling the refrigerating temperature zone chamber, and the temperature of the freezing temperature zone chamber is prevented from being influenced.
Preferably, the damper is provided as one.
in another aspect of the present invention, a refrigerator is further provided, where the refrigerator operates according to the control method of the refrigerator described in any of the above embodiments.
drawings
FIG. 1 is a first control state diagram of a longitudinal section of a refrigerator according to the present invention;
FIG. 2 is a schematic view of a second control state of a longitudinal section of the refrigerator of the present invention;
FIG. 3 is a schematic view of a third control state of a longitudinal section of the refrigerator of the present invention;
Fig. 4 is a first flowchart of a refrigerator operation control method of the present invention;
Fig. 5 is a second flowchart of the refrigerator operation control method of the present invention.
Detailed Description
the invention provides a new work control method of a refrigerator, which at least solves the problem of how to further reduce energy consumption.
The present invention provides a method for controlling a refrigerator, the refrigerator including: a freezing temperature zone chamber and a refrigerating temperature zone chamber for storing articles; a compressor and an evaporator for cooling the freezing temperature zone chamber and the refrigerating temperature zone chamber; a fan for sending the cold air cooled by the evaporator to the freezing temperature zone chamber and the refrigerating temperature zone chamber; the control method comprises the following steps:
Judging whether the refrigerating temperature zone chamber needs to be refrigerated or not;
When the refrigerating temperature zone chamber needs to be refrigerated, judging whether the temperature of the evaporator is lower than the set temperature of the refrigerating temperature zone chamber or not;
And when the temperature of the evaporator is lower than the set temperature of the refrigerating temperature zone chamber, starting the fan to work and not starting the compressor to work.
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a first state diagram of a longitudinal section of a refrigerator according to the present invention. The embodiment of the invention is described by taking a two-door refrigerator as an example, but the invention is not limited to the two-door refrigerator, and can also be applied to a three-door refrigerator, a side-by-side refrigerator or a multi-door refrigerator. As shown in fig. 1, the internal space of the refrigerator 100 is partitioned by a partition wall 7 into two storage compartments independent of each other, namely, a refrigerating temperature zone compartment 1 and a freezing temperature zone compartment 2. The refrigerating temperature of the refrigerating temperature zone chamber 1 is set to be higher than zero, and the freezing temperature zone chamber 2 located below the refrigerating temperature zone chamber 1 is set to be a freezing chamber. In particular, a plurality of shelves 11 are also provided in the refrigerated temperature zone chamber 1 to divide the storage compartment into different storage areas for placing different articles. Below the partition wall 7 is provided an evaporator chamber 4, and an evaporator 41 and a blower fan 42 are installed in the evaporator chamber 4.
An air supply duct 3 is arranged on the back of the refrigerating temperature zone chamber 1, the air supply duct 3 is defined by a back wall 12 of the storage compartment chamber 1 and an air duct cover plate 31, and a plurality of air outlets 32 arranged from top to bottom are arranged on the air duct cover plate 31 to convey cold air to different accommodating sections of the refrigerating temperature zone chamber 1. The supply air duct 3 communicates with the evaporator chamber 4 through a communication passage 5. The air is cooled by the evaporator 41 and then changed into cold air with lower temperature, and under the driving of the fan 42, the cold air passes through the communication channel 5 and enters the air supply duct 3, and flows upwards and downwards along the air supply duct 3, and then enters the refrigerated temperature zone chamber 1 through the air outlets 32 distributed in the same accommodating section.
in the refrigerating temperature zone 1, there are provided return air inlets 15 through which cold air is respectively introduced into return air passages (not shown in the drawings) to be returned to the evaporator compartment 4 after the refrigerating temperature zone 1 cools the stored goods. The evaporator compartment 4 is provided with an inlet 43 communicating with the return air passage, through which inlet 43 air is circulated back into the evaporator compartment 4 and after cooling by the evaporator 41 into the next air circulation.
Part of the cold air from the evaporator chamber 4 can enter the freezing temperature zone chamber 2 set as a freezing chamber along the second air supply duct 21 and is routed to a specific area of the freezing chamber to cool the frozen goods. The cold air is returned to the evaporator chamber 4 after cooling the articles, and then enters the next air circulation, which is well known to those skilled in the art and will not be described herein.
The air duct system of the refrigerator 100 is further provided with a damper 6, particularly only one damper, for controlling the air supply from the evaporator 41 to the freezing temperature zone chamber 1 and/or the refrigerating temperature zone chamber 2. The damper 6 can be controlled in three states:
In the first control state, as shown in fig. 1, the damper 6 closes neither the communication passage 5 nor the second air blowing duct 21, and can simultaneously blow air from the evaporator 41 to the freezing temperature zone chamber 1 and the refrigerating temperature zone chamber 2. In this state, the refrigerating temperature zone chamber 1 and the freezing temperature zone chamber 2 may be cooled at the same time.
in the second control state, as shown in fig. 2, the damper 6 closes the passage through which air is blown from the evaporator 41 to the refrigerating temperature zone chamber 1, that is, the damper 6 closes the communication passage 5. In this state, the freezing temperature zone chamber 2 may be cooled alone.
In the third control state, as shown in fig. 3, damper 6 closes the passage of air from evaporator 41 to freezing temperature zone chamber 1, that is, damper 6 closes second air supply duct 21. In this state, the refrigerating temperature zone chamber 1 may be independently refrigerated.
generally, the temperature of the evaporator 41 of the refrigerator is relatively low, and particularly, the temperature of the evaporator 41 is particularly low immediately after the refrigeration of the freezing temperature zone chamber 2 by the refrigerator is finished. At this time, if the refrigerating temperature zone chamber 1 has a refrigerating requirement, the fan 42 can be started on the premise of not starting the compressor, air is supplied to the refrigerating temperature zone chamber 1 from the evaporator 41, and the residual cold energy of the evaporator 41 in a state of lower temperature at this time is fully utilized to realize the refrigeration of the refrigerating temperature zone chamber 1. However, if the refrigerating temperature zone 1 needs refrigerating, it is not always reasonable to start the fan 42 without starting the compressor each time in order to utilize the residual cold of the evaporator 41. Since the temperature of the evaporator 41 is not low enough, the purpose of refrigerating the refrigerating temperature zone 1 cannot be achieved by starting the fan 42 without starting the compressor, and thus, the energy consumption cannot be reduced but increased. In order to solve the above problems, the present invention proposes a further optimized refrigerator operation control method, specifically referring to fig. 4:
First, when it is determined that the refrigerating temperature zone chamber 1 needs cooling, it is continuously determined whether the temperature Te of the evaporator 41 is lower than the set temperature Tt of the refrigerating temperature zone chamber 1. At this time, if the temperature Te of the evaporator 41 is already greater than or equal to the set temperature Tt of the refrigerating temperature zone chamber 1, the operation of the compressor and the operation of the fan 42 are started, and the normal refrigerating process of the refrigerating temperature zone chamber is directly performed.
Next, when the temperature Te of the evaporator 41 is lower than the set temperature Tt of the refrigerating temperature zone chamber 1, the fan 42 is started to operate and the compressor is not started to operate; so that air is blown from the evaporator 41 to the refrigerating temperature zone chamber 2 to refrigerate the refrigerating temperature zone chamber; and at this time, the damper 6 is in the operating state as shown in fig. 3, that is, the damper 6 closes the passage of the air supplied from the evaporator 41 to the freezing temperature zone chamber 1, that is, the damper 6 closes the second air supply duct 21, so that the residual cold energy of the evaporator 41 is intensively used for cooling the refrigerating temperature zone chamber 2.
Next, after the fan 42 is started to operate and the compressor is not started to operate, whether the temperature Tc of the refrigerating temperature zone 2 reaches the set temperature Tt after being cooled is continuously judged; if the temperature Tc of the refrigerating temperature zone 2 has become less than or equal to the set temperature Tt, the control fan 42 stops operating and the demand for cooling of the refrigerating temperature zone chamber 1 is completed. On the other hand, if the temperature Tc of the refrigerating temperature zone 2 has not reached the set temperature Tt, the process returns to the step of continuously determining whether the temperature Te of the evaporator 41 is lower than the set temperature Tt of the refrigerating temperature zone chamber 1. If the temperature Te of the evaporator 41 is still lower than the set temperature Tt of the refrigerating temperature zone chamber 1, the operation of the start fan 42 is continuously maintained and the operation of the compressor is not started. And if the temperature Te of the evaporator 41 is greater than or equal to the set temperature Tt of the refrigerating temperature zone chamber 1, the operation of the compressor is started and the fan 42 is kept to operate, and the normal refrigerating program of the refrigerating temperature zone chamber is entered.
the application of the invention also provides another optimized refrigerator work control method, which is shown in specific reference to fig. 5:
first, after it is determined that the refrigerating temperature zone chamber 1 needs to be cooled, it is continuously determined whether a temperature difference obtained by subtracting the temperature Te of the evaporator 41 from the set temperature Tt of the refrigerating temperature zone chamber 1 is greater than or equal to a preset temperature difference Δ T. At this time, if the temperature difference obtained by subtracting the temperature Te of the evaporator 41 from the set temperature Tt of the refrigerating temperature zone chamber 1 is smaller than the preset temperature difference Δ T, the operation of the compressor and the operation of the fan 42 are started, and the normal refrigerating process of the refrigerating temperature zone chamber is directly performed.
Next, when the temperature difference obtained by subtracting the temperature Te of the evaporator 41 from the set temperature Tt of the refrigerating temperature zone chamber 1 is greater than or equal to a preset temperature difference Δ T, the fan 42 is started to operate and the compressor is not started to operate; so that air is blown from the evaporator 41 to the refrigerating temperature zone chamber 2 to refrigerate the refrigerating temperature zone chamber; and at this time, the damper 6 is in the operating state as shown in fig. 3, that is, the damper 6 closes the passage of the air supplied from the evaporator 41 to the freezing temperature zone chamber 1, that is, the damper 6 closes the second air supply duct 21, so that the residual cold energy of the evaporator 41 is intensively used for cooling the refrigerating temperature zone chamber 2.
next, after the fan 42 is started to operate and the compressor is not started to operate, whether the temperature Tc of the refrigerating temperature zone 2 reaches the set temperature Tt after being cooled is continuously judged; if the temperature Tc of the refrigerating temperature zone 2 has become less than or equal to the set temperature Tt, the control fan 42 stops operating and the demand for cooling of the refrigerating temperature zone chamber 1 is completed. And if the temperature Tc of the refrigerating temperature zone 2 has not reached the set temperature Tt, returning to continuously determine whether the temperature difference obtained by subtracting the temperature Te of the evaporator 41 from the set temperature Tt of the refrigerating temperature zone chamber 1 is greater than or equal to a preset temperature difference DeltaT. If the temperature difference obtained by subtracting the temperature Te of the evaporator 41 from the set temperature Tt of the refrigerating temperature zone chamber 1 is still greater than or equal to a preset temperature difference Δ T, the operation of the start fan 42 is continuously maintained and the operation of the compressor is not started. And if the temperature difference obtained by subtracting the temperature Te of the evaporator 41 from the set temperature Tt of the refrigerating temperature zone chamber 1 is less than a preset temperature difference Delta T, starting the compressor and keeping the fan 42 to work, and entering the normal refrigerating program of the refrigerating temperature zone chamber 1.
the previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A control method of a refrigerator, the refrigerator comprising:
A freezing temperature zone chamber and a refrigerating temperature zone chamber for storing articles;
A compressor and an evaporator for cooling the freezing temperature zone chamber and the refrigerating temperature zone chamber;
A fan for sending the cold air cooled by the evaporator to the freezing temperature zone chamber and the refrigerating temperature zone chamber;
the control method is characterized by comprising the following steps:
judging whether the refrigerating temperature zone chamber needs to be refrigerated or not;
When the refrigerating temperature zone chamber needs to be refrigerated, judging whether the temperature of the evaporator is lower than the set temperature of the refrigerating temperature zone chamber or not;
and when the temperature of the evaporator is lower than the set temperature of the refrigerating temperature zone chamber, starting the fan to work and not starting the compressor to work.
2. the control method of a refrigerator as claimed in claim 1, further comprising the steps of:
When the difference value obtained by subtracting the temperature of the evaporator from the set temperature of the refrigerating temperature zone chamber is greater than or equal to a preset temperature difference value, the fan is started to work and the compressor is not started to work.
3. the control method of a refrigerator according to claim 1 or 2, further comprising the steps of:
And after the step of starting the fan and not starting the compressor to work, continuously judging whether the temperature of the refrigerating temperature zone chamber reaches the set temperature or not.
4. the control method of a refrigerator according to claim 3, further comprising the steps of:
and when the temperature of the refrigerating temperature zone chamber reaches the set temperature, stopping the fan.
5. The control method of a refrigerator according to claim 3, further comprising the steps of:
and when the temperature of the refrigerating temperature zone chamber is judged to be still lower than the set temperature, continuously judging whether the temperature of the evaporator is still lower than the set temperature of the refrigerating temperature zone chamber or whether the difference value of the set temperature of the refrigerating temperature zone chamber minus the temperature of the evaporator is larger than or equal to a preset temperature difference value.
6. The control method of a refrigerator as claimed in claim 1, further comprising the steps of:
and when the temperature of the evaporator is not lower than the set temperature of the refrigerating temperature zone chamber, or when the difference value obtained by subtracting the temperature of the evaporator from the set temperature of the refrigerating temperature zone chamber is smaller than the preset temperature difference value, starting the compressor to work.
7. The control method of a refrigerator according to claim 1 or 2, wherein the refrigerator further comprises a damper to control the supply of air from the evaporator to the freezing temperature zone chamber and/or the refrigerating temperature zone chamber; the control method further comprises the following steps:
When the fan is started to work and the compressor is not started to work, the air door closes a passage for supplying air from the evaporator to the freezing temperature zone chamber.
8. The control method of a refrigerator according to claim 7, wherein the damper is provided as one.
9. a refrigerator characterized in that it operates according to the control method of a refrigerator according to any one of the preceding claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810531678.0A CN110542276B (en) | 2018-05-29 | 2018-05-29 | Refrigerator and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810531678.0A CN110542276B (en) | 2018-05-29 | 2018-05-29 | Refrigerator and control method thereof |
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| Publication Number | Publication Date |
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| CN110542276A true CN110542276A (en) | 2019-12-06 |
| CN110542276B CN110542276B (en) | 2022-08-12 |
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| CN201810531678.0A Active CN110542276B (en) | 2018-05-29 | 2018-05-29 | Refrigerator and control method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111059861A (en) * | 2019-12-10 | 2020-04-24 | 海信（山东）冰箱有限公司 | Refrigeration control method of refrigerator and refrigerator |
| CN111503992A (en) * | 2020-04-29 | 2020-08-07 | 四川虹美智能科技有限公司 | Refrigerator control method and device |
| CN113819709A (en) * | 2020-06-19 | 2021-12-21 | Tcl家用电器（合肥）有限公司 | System control method, device, refrigerator, computer equipment and storage medium |
| CN113970227A (en) * | 2020-07-22 | 2022-01-25 | 海信（山东）冰箱有限公司 | Three-system refrigerator and control method |
| CN115265086A (en) * | 2022-08-09 | 2022-11-01 | 长虹美菱股份有限公司 | Control system and method for three-door variable temperature refrigerator |
| WO2023123937A1 (en) * | 2021-12-30 | 2023-07-06 | 合肥美的电冰箱有限公司 | Air duct assembly and refrigeration apparatus |
| WO2023123939A1 (en) * | 2021-12-30 | 2023-07-06 | 合肥美的电冰箱有限公司 | Refrigeration apparatus |
| WO2023123936A1 (en) * | 2021-12-30 | 2023-07-06 | 合肥美的电冰箱有限公司 | Air duct assembly and refrigeration equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111059861A (en) * | 2019-12-10 | 2020-04-24 | 海信（山东）冰箱有限公司 | Refrigeration control method of refrigerator and refrigerator |
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| CN113970227A (en) * | 2020-07-22 | 2022-01-25 | 海信（山东）冰箱有限公司 | Three-system refrigerator and control method |
| WO2023123937A1 (en) * | 2021-12-30 | 2023-07-06 | 合肥美的电冰箱有限公司 | Air duct assembly and refrigeration apparatus |
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| WO2023123936A1 (en) * | 2021-12-30 | 2023-07-06 | 合肥美的电冰箱有限公司 | Air duct assembly and refrigeration equipment |
| CN115265086A (en) * | 2022-08-09 | 2022-11-01 | 长虹美菱股份有限公司 | Control system and method for three-door variable temperature refrigerator |
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| Publication number | Publication date |
|---|---|
| CN110542276B (en) | 2022-08-12 |
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