CN111649516B - A kind of refrigerator - Google Patents
A kind of refrigerator Download PDFInfo
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- CN111649516B CN111649516B CN202010424674.XA CN202010424674A CN111649516B CN 111649516 B CN111649516 B CN 111649516B CN 202010424674 A CN202010424674 A CN 202010424674A CN 111649516 B CN111649516 B CN 111649516B
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- 238000005057 refrigeration Methods 0.000 claims abstract description 88
- 238000010257 thawing Methods 0.000 claims abstract description 64
- 238000001816 cooling Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003507 refrigerant Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 8
- 230000008014 freezing Effects 0.000 description 8
- 238000007710 freezing Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
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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
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
-
- 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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/004—Control mechanisms
-
- 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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
-
- 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)
- Defrosting Systems (AREA)
Abstract
The invention relates to the technical field of refrigerators, and discloses a refrigerator which comprises a low-temperature storage space; a refrigeration system comprising a compressor, a condenser, a throttling device, a first evaporator, a second evaporator, a first fan motor, a second fan motor, a first heater, a second heater, a controller configured to: acquiring the refrigerating time of a first evaporator and the refrigerating time of a second evaporator; when the refrigerating time of the first evaporator is greater than a preset first time threshold and the refrigerating time of the second evaporator is less than or equal to a preset second time threshold, controlling the refrigerating system to execute a first defrosting operation until the temperature of the first evaporator is greater than a first temperature threshold; and after the first defrosting operation is executed, controlling the refrigeration system to execute a preset first refrigeration operation. The refrigerator reduces the temperature rise of the low-temperature storage space in the defrosting process of the evaporator, ensures the quality of food in the refrigerator, reduces the power consumption of the refrigerator and has good energy-saving effect.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator.
Background
At present, in the existing single-system refrigerating and freezing frost-free refrigerator, a freezing chamber is generally provided with 1 evaporator and 1 fan motor, and the cold energy of the evaporator in the refrigerating system is provided for the freezing chamber to refrigerate in a forced convection mode, so that the aim of cooling is fulfilled. However, when the evaporator is cooled for a long time, the water vapor on the surface of the evaporator is gradually condensed into frost, and the thickness of the frost is gradually increased along with the increase of the cooling time; when the frosting amount on the evaporator reaches a certain amount, the compartment circulating air in the refrigerator cannot pass through the evaporator, and further cannot circulate air, so that the evaporator is frosted and blocked, and the phenomenon of poor refrigeration or no refrigeration of the freezing compartment is caused.
The existing frost-free refrigerator generally adopts a heater to heat and defrost. Specifically, when the frosting amount on the evaporator reaches a certain amount, controlling a compressor in the ice box to stop running so as to stop refrigerating the refrigerating system, controlling a heater to be electrified and starting heating for defrosting; when the frost melting of the evaporator is finished, the compressor is controlled to restart to enable the refrigeration system to restart refrigeration. In the process of implementing the invention, the inventor finds that the prior art has at least the following technical problems: in the defrosting process, the refrigerating system stops refrigerating and the heater heats, so that the temperature of the freezing chamber rapidly rises, and the temperature of food in the refrigerator also rises along with the temperature; after defrosting is finished, the refrigeration of the freezing chamber needs to be restarted, so that the temperature of the freezing chamber is reduced to the set temperature before defrosting again, as shown in FIG. 1 (cited in GB/T8059-2016). In the process, the temperature fluctuation in the freezing chamber is large, and the quality of the food is seriously influenced; moreover, after defrosting, a large amount of electric energy is consumed for cooling due to temperature rising, so that the user experience is reduced.
Disclosure of Invention
The invention aims to provide a refrigerator, which can reduce the temperature rise of a low-temperature storage space in the refrigerator in the defrosting process of an evaporator so as to ensure the quality of food in the refrigerator and reduce the power consumption of the refrigerator.
In order to solve the above technical problem, the present invention provides a refrigerator including:
a low temperature storage space;
a refrigeration system for supplying cold to the low-temperature storage space, the refrigeration system comprising:
a compressor;
a condenser, a first end of the condenser being connected to a first end of the compressor;
a first end of the throttling device is connected with a second end of the condenser;
a first end of the first evaporator is connected with a second end of the throttling device;
a second evaporator, a first end of the second evaporator being connected to a second end of the first evaporator, a second end of the second evaporator being connected to a second end of the compressor;
the first fan motor is used for providing the cold energy of the first evaporator to the low-temperature storage space;
the second fan motor is used for providing the cold energy of the second evaporator to the low-temperature storage space;
the first heater is used for providing heat for the first evaporator so as to remove frost on the first evaporator;
the second heater is used for providing heat for the second evaporator so as to clear frost on the second evaporator; and the number of the first and second groups,
a controller configured to:
acquiring the refrigerating time of the first evaporator and the refrigerating time of the second evaporator in real time; the refrigeration time length of the first evaporator is the time length that the temperature of the first evaporator is continuously less than or equal to a preset first temperature threshold value; the refrigerating time of the second evaporator is the time when the temperature of the second evaporator is continuously less than or equal to a preset second temperature threshold value;
when the refrigerating time of the first evaporator is greater than a preset first time threshold and the refrigerating time of the second evaporator is less than or equal to a preset second time threshold, controlling the refrigerating system to execute a first defrosting operation until the temperature of the first evaporator is greater than the first temperature threshold; wherein the first defrost operation is: controlling the compressor, the first fan motor and the second heater to stop working, and controlling the first heater and the second fan motor to work;
and after the first defrosting operation is executed, controlling the refrigeration system to execute a preset first refrigeration operation.
In some embodiments of the present application, after the first defrosting operation is performed, the controlling the refrigeration system to perform a preset first refrigeration operation specifically includes:
after the first defrosting operation is executed, controlling the first heater and the second heater to stop working, and controlling the compressor and the second fan motor to work;
and when the running time of the second fan motor reaches a preset third time threshold, controlling the first fan motor to start working.
In some embodiments of the present application, the controller is further configured to:
when the refrigerating time of the first evaporator is less than or equal to a preset first time threshold and the refrigerating time of the second evaporator is greater than a preset second time threshold, controlling the refrigerating system to execute a second defrosting operation until the temperature of the second evaporator is greater than a second temperature threshold; wherein the second defrost operation is: controlling the compressor, the second fan motor and the first heater to stop working, and controlling the second heater and the first fan motor to work;
and after the second defrosting operation is executed, controlling the refrigerating system to execute a preset second refrigerating operation.
In some embodiments of the present application, after the second defrosting operation is performed, the controlling the refrigeration system to perform a preset second refrigeration operation specifically includes:
after the second defrosting operation is executed, controlling the first heater and the second heater to stop working, and controlling the compressor and the first fan motor to work;
and when the running time of the first fan motor reaches a preset fourth time threshold, controlling the second fan motor to start working.
In some embodiments of the present application, the controller is further configured to:
when the refrigerating time of the first evaporator is greater than a preset first time threshold and the refrigerating time of the second evaporator is greater than a preset second time threshold, controlling the refrigerating system to execute a third defrosting operation until the temperature of the first evaporator is greater than a preset first temperature threshold or until the temperature of the second evaporator is greater than a preset second temperature threshold; wherein the third defrost operation is: controlling the compressor, the first fan motor and the second fan motor to stop working, and controlling the first heater and the second heater to work;
and after the third defrosting operation is executed, controlling the refrigeration system to execute a preset third refrigeration operation.
In some embodiments of the present application, the controller is further configured to:
and when the refrigerating time of the first evaporator is less than or equal to a preset first time threshold value and the refrigerating time of the second evaporator is less than or equal to a preset second time threshold value, controlling the refrigerating system to keep executing a preset third refrigerating operation.
In some embodiments of the present application, the controller is further configured to:
and when a refrigeration instruction is received, controlling the refrigeration system to execute a preset third refrigeration operation.
In some embodiments of the present application, the third cooling operation specifically includes:
and controlling the first heater and the second heater to stop working, and controlling the compressor, the first fan motor and the second fan motor to work.
In some embodiments of the present application, the refrigerator further comprises:
the first temperature sensor is used for acquiring the temperature and the refrigerating time of the first evaporator;
and the second temperature sensor is used for acquiring the temperature and the refrigerating time of the second evaporator.
Compared with the prior art, the invention provides the refrigerator, when the refrigerating time of the first evaporator is longer than a preset first time threshold and the refrigerating time of the second evaporator is less than or equal to a preset second time threshold, the compressor, the first fan motor and the second heater are controlled to stop working, and the first heater and the second fan motor are controlled to work until the temperature of the first evaporator is greater than the first temperature threshold, so that the cold energy of the second evaporator can be kept being supplied to the low-temperature storage space while the frost on the first evaporator is removed, the temperature of the low-temperature storage space in the refrigerator is maintained, the temperature rise amplitude of the low-temperature storage space in the defrosting process of the evaporator is reduced, and the quality of food in the refrigerator is further ensured, and the power consumption of the refrigerator is reduced, so that the refrigerator has a good energy-saving effect, and the user experience is improved.
Drawings
FIG. 1 is a schematic diagram of temperature and power during operation of a prior art frost free refrigerator;
fig. 2 is a schematic structural diagram of a refrigeration system of a refrigerator according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a cover plate of an air duct according to an embodiment of the present invention;
FIG. 4 is an assembly view of the cover plate, the first evaporator, the second evaporator, the first fan motor and the second fan motor according to the embodiment of the present invention;
fig. 5 is a schematic view of a work flow of a refrigerator according to an embodiment of the present invention.
Wherein, 1, a compressor; 2. a condenser; 3. a first evaporator; 4. a second evaporator; 5. a first fan motor; 6. a second fan motor; 7. a first heater; 8. a second heater; 9. an air duct cover plate; 91. a first air outlet; 92. a first air return opening; 93. a second air outlet; 94. a second air return inlet; 10. a throttling device.
Detailed Description
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.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 2 to 4, a refrigerator according to an embodiment of the present invention includes:
a low temperature storage space;
a refrigeration system for supplying cold to the low-temperature storage space, the refrigeration system comprising:
a compressor 1;
a condenser 2, a first end of the condenser 2 is connected with a first end of the compressor 1;
a throttling device 10, wherein a first end of the throttling device 10 is connected with a second end of the condenser 2;
a first evaporator 3, wherein a first end of the first evaporator 3 is connected with a second end of the throttling device 10;
a second evaporator 4, a first end of the second evaporator 4 being connected to a second end of the first evaporator 3, a second end of the second evaporator 4 being connected to a second end of the compressor 1;
a first fan motor 5 for supplying the cold of the first evaporator 3 to the low-temperature storage space;
a second fan motor 6 for supplying the cold energy of the second evaporator 4 to the low-temperature storage space;
a first heater 7 for supplying heat to the first evaporator 3 to remove frost from the first evaporator 3;
a second heater 8 for supplying heat to the second evaporator 4 to remove frost from the second evaporator 4; and the number of the first and second groups,
a controller (not shown in the figures) configured to:
acquiring the refrigerating time of the first evaporator 3 and the refrigerating time of the second evaporator 4 in real time; wherein the refrigeration time of the first evaporator 3 is the time when the temperature of the first evaporator 3 is continuously less than or equal to a preset first temperature threshold value; the refrigerating time of the second evaporator 4 is the time when the temperature of the second evaporator 4 is continuously less than or equal to a preset second temperature threshold value;
when the refrigerating time of the first evaporator 3 is greater than a preset first time threshold and the refrigerating time of the second evaporator 4 is less than or equal to a preset second time threshold, controlling the refrigerating system to execute a first defrosting operation until the temperature of the first evaporator 3 is greater than the first temperature threshold; wherein the first defrost operation is: controlling the compressor 1, the first fan motor 5 and the second heater 8 to stop working, and controlling the first heater 7 and the second fan motor 6 to work;
and after the first defrosting operation is executed, controlling the refrigeration system to execute a preset first refrigeration operation.
It is understood that the refrigerator according to the embodiment of the present invention performs a refrigerating cycle of the refrigerator by using the compressor 1, the condenser 2, the throttle device 10, the first evaporator 3, the second evaporator 4, the first fan 5, and the second fan 6. The refrigeration cycle includes a series of processes involving compression, condensation, throttling, and evaporation, and supplies refrigerant to the air that has been conditioned and heat exchanged.
Specifically, as shown in fig. 3 and 4, an air duct cover plate 9 is configured in the low-temperature storage space, a first air duct is disposed in the air duct cover plate 9, a first air outlet 91 is disposed at one end of the first air duct, a first air return opening 92 is disposed at the other end of the first air duct, and the first air outlet 91 and the first air return opening 92 are respectively communicated with the low-temperature storage space; the first fan motor 5 is arranged in the first air duct and is close to the first air outlet 91; the first evaporator 3 is disposed on the inner side wall of the first air duct and close to the first air return opening 92. A second air duct is further arranged in the air duct cover plate 9, a second air outlet 93 is arranged at one end of the second air duct, a second air return inlet 94 is arranged at the other end of the second air duct, and the second air outlet 93 and the second air return inlet 94 are communicated with the low-temperature storage space; the second fan motor 6 is arranged in the second air duct and is close to the second air outlet 93; the second evaporator 4 is disposed on the inner side wall of the second air duct and close to the second air return opening 94.
When the refrigerator is powered on and a refrigeration system of the refrigerator starts to operate, refrigerant gas is compressed into a high-temperature and high-pressure state through the compressor 1 and is discharged through a discharge end of the compressor 1; the discharged refrigerant gas flows into the condenser 2, the condenser 2 condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process. The refrigerant flowing out of the condenser 2 flows into the expansion device 10, and the high-temperature and high-pressure liquid-phase refrigerant flowing out of the condenser 2 is expanded into a low-pressure liquid-phase refrigerant. The refrigerant flowing out of the expansion device 10 flows into the first evaporator 3 and the second evaporator 4 in this order to be evaporated, and then the refrigerant gas in a low-temperature and low-pressure state is returned to the compressor 1, as shown in fig. 2. During this refrigeration cycle, the first fan motor 5 and the second fan motor 6 are both in an operating state, and the first heater 7 and the second heater 8 are both out of operation. As the refrigeration system is operated, the first evaporator 3 and the second evaporator 4 start to decrease in temperature, the cold air cooled by the first evaporator 3 is cooled by the first fan motor 5, so that the first air outlet 91 of the first air duct blows to the low-temperature storage space, and the cold air cooled by the second evaporator 4 is blown to the low-temperature storage space from the second air outlet 93 of the second air duct by the second fan motor 6, then returns to the air duct cover plate 9 through the first return air inlet 92 and the second return air inlet 94, and brings the humid air in the low-temperature storage space to the first evaporator 3 and the second evaporator 4, and the humid air is condensed into frost on the first evaporator 3 and the second evaporator 4, and the frost formation on the first evaporator 3 and the second evaporator 4 is gradually increased in cycles. The refrigerator may adjust the temperature of the low-temperature storage space throughout the cycle.
Referring to fig. 5, during the refrigeration cycle, when the refrigeration duration of the first evaporator 3 obtained by the controller is greater than a preset first duration threshold and the refrigeration duration of the second evaporator 4 is less than or equal to a preset second duration threshold, it indicates that the frost formation amount on the first evaporator 3 has reached a certain amount, so the refrigeration system is controlled to perform the first defrosting operation until the temperature of the first evaporator 3 is greater than the first temperature threshold, so as to clear the frost formation on the first evaporator 3. After the first defrosting operation is performed, the temperature of the first evaporator 3 is greater than a preset first temperature threshold, which indicates that frost on the first evaporator 3 has melted and the amount of frost on the first evaporator 3 has fallen below the preset frost amount threshold, so that the first heater 7 and the second heater 8 are controlled to stop working, and the compressor 1, the first fan motor 5 and the second fan motor 6 are controlled to work, so that the refrigeration system resumes normal refrigeration. It should be noted that the refrigeration duration of the first evaporator 3 is a duration in which the temperature of the first evaporator 3 is continuously less than or equal to a preset first temperature threshold, that is, in a defrosting cycle, the temperature of the first evaporator 3 is less than or equal to an accumulated duration of the preset first temperature threshold, after the first defrosting operation (defrosting) is performed, the temperature of the first evaporator 3 is greater than the first temperature threshold, and at this time, the refrigeration duration of the first evaporator 3 is cleared; similarly, the refrigerating time of the second evaporator is also the same, and is not described herein again. In addition, the first time length threshold, the second time length threshold, the first temperature threshold, and the second temperature threshold may be set according to actual use requirements, which is not limited in the present invention.
In the embodiment of the present invention, when the refrigeration time period of the first evaporator 3 is greater than a preset first time period threshold value, and the refrigeration time period of the second evaporator 4 is less than or equal to a preset second time period threshold value, the compressor 1, the first fan motor 5, and the second heater 8 are controlled to stop working, and the first heater 7 and the second fan motor 6 are controlled to work until the temperature of the first evaporator 3 is greater than the first temperature threshold value, so that while the frost formation on the first evaporator 3 is cleared, the cold energy of the second evaporator 5 can be kept being provided to the low-temperature storage space, so as to maintain the temperature of the low-temperature storage space in the refrigerator, thereby reducing the temperature rise of the low-temperature storage space in the refrigerator during the defrosting process of the evaporator, and further ensuring the quality of food in the refrigerator, and the power consumption of the refrigerator is reduced, so that the refrigerator has a good energy-saving effect, and the user experience is improved.
In some embodiments of the present invention, after the performing of the first defrosting operation, the controlling the refrigeration system to perform a preset first refrigeration operation specifically includes:
after the first defrosting operation is performed, controlling the first heater 7 and the second heater 8 to stop working, and controlling the compressor 1 and the second fan motor 6 to work;
and when the running time of the second fan motor 6 reaches a preset third time threshold, controlling the first fan motor 5 to start working.
Specifically, after the first defrosting operation is performed, the first heater 7 and the second heater 8 are controlled to stop working, and the compressor 1 and the second fan motor 6 work to operate the refrigeration system, and at this time, the cooling capacity of the second evaporator 4 is provided to the low-temperature storage space only by the second fan motor 6. In this embodiment, heat is provided to the first evaporator 3 through the first heater 7 to clear frost on the first evaporator 3, so that after the frost is removed, the temperature of the first evaporator 3 is relatively high, and in this embodiment, when the operation time of the second fan motor 6 reaches a preset third time threshold, the first fan motor 5 is controlled to start working, so that after the temperature of the first evaporator 3 is reduced, the cold energy of the first evaporator 3 is provided to the low-temperature storage space through the first fan motor 5, thereby further reducing the temperature rise amplitude of the low-temperature storage space, and simultaneously reducing the electric quantity consumed for cooling the refrigerator after the frost is removed. It should be noted that the operation duration of the second fan motor 6 is specifically as follows: a time during which the second fan motor 6 is operated after the first defrosting operation is performed; the third duration threshold may be set according to actual use requirements, which is not limited by the present invention.
As shown in fig. 5, in some embodiments of the invention, the controller is further configured to:
when the refrigerating time of the first evaporator 3 is less than or equal to a preset first time threshold and the refrigerating time of the second evaporator 5 is greater than a preset second time threshold, controlling the refrigerating system to execute a second defrosting operation until the temperature of the second evaporator 4 is greater than the second temperature threshold; wherein the second defrost operation is: controlling the compressor 1, the second fan motor 6 and the first heater 7 to stop working, and controlling the second heater 8 and the first fan motor 5 to work;
and after the second defrosting operation is executed, controlling the refrigerating system to execute a preset second refrigerating operation.
In the embodiment of the present invention, when the cooling time period of the first evaporator 3 acquired by the controller is less than or equal to the preset first time period threshold value and the cooling time of the second evaporator 5 is greater than the preset second time period threshold value, it indicates that the amount of frost on the second evaporator 4 has reached a certain amount, and thus the refrigeration system is controlled to perform the second defrosting operation until the temperature of the second evaporator 4 is greater than the second temperature threshold value, so as to clear the frost on the second evaporator 4. After the second defrosting operation is performed, the temperature of the second evaporator 4 is greater than a preset second temperature threshold, which indicates that frost on the second evaporator 4 has melted and the amount of frost on the second evaporator 4 has fallen below the preset frost amount threshold, so that the first heater 7 and the second heater 8 are controlled to stop working, and the compressor 1, the first fan motor 5 and the second fan motor 6 are controlled to work, so that the refrigeration system restarts normal refrigeration. In the embodiment of the present invention, when the refrigerating time of the first evaporator 3 is less than or equal to a preset first time threshold, and the refrigerating time of the second evaporator 5 is greater than a preset second time threshold, the compressor 1, the second fan motor 6, and the first heater 7 are controlled to stop working, and the second heater 8 and the first fan motor 5 are controlled to work until the temperature of the second evaporator 4 is greater than the second temperature threshold, so that while the frost formation on the second evaporator 4 is cleared, the cold energy of the first evaporator 4 can be kept being provided to the low-temperature storage space to maintain the temperature of the low-temperature storage space in the refrigerator, thereby reducing the temperature rise of the low-temperature storage space in the refrigerator during the defrosting process of the evaporator, and further ensuring the quality of food in the refrigerator, and the power consumption of the refrigerator is reduced, so that the refrigerator has a good energy-saving effect, and the user experience is improved.
In some embodiments of the present invention, after the second defrosting operation is performed, the controlling the refrigeration system to perform a preset second refrigeration operation specifically includes:
after the second defrosting operation is performed, controlling the first heater 7 and the second heater 8 to stop working, and controlling the compressor 1 and the first fan motor 5 to work;
and when the running time of the first fan motor 5 reaches a preset fourth time threshold, controlling the second fan motor 6 to start working.
Specifically, after the second defrosting operation is performed, the first heater 7 and the second heater 8 are controlled to stop working, and the compressor 1 and the first fan motor 5 are controlled to work, so that the refrigeration system operates, and at this time, the cooling capacity of the first evaporator 3 is provided to the low-temperature storage space only by the first fan motor 5. In this embodiment, heat is provided to the second evaporator 4 through the second heater 8 to clear frost on the second evaporator 4, so that after the frost is removed, the temperature of the second evaporator 4 is relatively high, and in this embodiment, when the operation time of the first fan motor 5 reaches a preset fourth time threshold, the second fan motor 6 is controlled to start working, so that after the temperature of the second evaporator 4 is reduced, the cold energy of the second evaporator 4 is provided to the low-temperature storage space through the second fan motor 6, thereby further reducing the temperature rise amplitude of the low-temperature storage space, and simultaneously reducing the electric quantity consumed for cooling the refrigerator after the frost is removed. It should be noted that the operation duration of the first fan motor 5 is specifically as follows: the running time of the first fan motor 5 after the temperature of the second evaporator 4 is greater than a preset second temperature threshold; in addition, the fourth time threshold may be set according to actual use requirements, and the present invention is not limited to this.
As shown in fig. 5, in some embodiments of the invention, the controller is further configured to:
when the refrigerating time of the first evaporator 3 is greater than a preset first time threshold and the refrigerating time of the second evaporator 4 is greater than a preset second time threshold, controlling the refrigerating system to execute a third defrosting operation until the temperature of the first evaporator 3 is greater than a preset first temperature threshold or until the temperature of the second evaporator 4 is greater than a preset second temperature threshold; wherein the third defrost operation is: controlling the compressor 1, the first fan motor 5 and the second fan motor 6 to stop working, and controlling the first heater 7 and the second heater 8 to work;
and after the third defrosting operation is executed, controlling the refrigeration system to execute a preset third refrigeration operation.
In the embodiment of the present invention, when the cooling time period of the first evaporator 3 is greater than the preset first time period threshold value and the cooling time period of the second evaporator 4 is greater than the preset second time period threshold value, it indicates that the frost formation amount on the first evaporator 3 and the second evaporator 4 has reached a certain amount, and therefore the refrigeration system is controlled to perform the third defrosting operation until the temperature of the first evaporator 3 is greater than the preset first temperature threshold value, or the refrigeration system is controlled to perform the third defrosting operation until the temperature of the second evaporator 4 is greater than the preset second temperature threshold value, so as to clear the frost formation on the first evaporator 3 and the second evaporator 4 at the same time. After the third defrosting operation is performed, when the temperature of the first evaporator 3 is greater than a preset first temperature threshold, it indicates that the frost on the first evaporator 3 has melted, and the frost amount on the first evaporator 3 is lower than the preset frost amount threshold, at this time, the frost on the second evaporator 4 is similar to the frost on the first evaporator 3, so that the first heater 7 and the second heater 8 are controlled to stop working, and the compressor 1, the first fan motor 5 and the second fan motor 6 are controlled to work, so that the refrigeration system restarts normal refrigeration. After the third defrosting operation is performed, when the temperature of the second evaporator 4 is greater than a preset second temperature threshold, it indicates that the frost on the second evaporator 4 has melted, and the frost amount on the second evaporator 4 is lower than the preset frost amount threshold, at this time, the frost on the first evaporator 3 is similar to the frost on the second evaporator 4, so that the first heater 7 and the second heater 8 are controlled to stop working, and the compressor 1, the first fan motor 5 and the second fan motor 6 are controlled to work, so that the refrigeration system restarts normal refrigeration.
In some embodiments of the present invention, after the third defrosting operation is performed, the controlling the refrigeration system to perform a preset third refrigeration operation specifically includes:
after the third defrosting operation is performed, the first heater 7 and the second heater 8 are controlled to stop operating, and the compressor 1, the first fan motor 5, and the second fan motor 6 are controlled to operate.
In the embodiment of the present invention, when the cooling time of the first evaporator 3 is greater than a preset first time threshold, and the cooling time of the second evaporator 4 is greater than a preset second time threshold, the refrigeration system is controlled to perform a third defrosting operation until the temperature of the first evaporator 3 is greater than a preset first temperature threshold or until the temperature of the second evaporator 4 is greater than a preset second temperature threshold, so as to quickly clear frost deposits on the first evaporator 3 and the second evaporator 4. In addition, it should be noted that, in the refrigerator of the present embodiment, although when the cooling time period of the first evaporator 3 is greater than the preset first time period threshold value, and the cooling time period of the second evaporator 4 is greater than the preset second time period threshold value, the first heater 7 and the second heater 8 are controlled to operate simultaneously; however, in combination with this embodiment, when the refrigerating time of the first evaporator 3 is greater than the preset first time threshold, and the refrigerating time of the second evaporator 4 is less than or equal to the preset second time threshold, the refrigeration system is controlled to perform the first defrosting operation, and when the refrigerating time of the first evaporator 3 is less than or equal to the preset first time threshold, and the refrigerating time of the second evaporator 5 is greater than the preset second time threshold, the refrigeration system is controlled to perform the second defrosting operation.
As shown in fig. 5, in some embodiments of the invention, the controller is further configured to:
and when the refrigerating time of the first evaporator 3 is less than or equal to a preset first time threshold value and the refrigerating time of the second evaporator 4 is less than or equal to a preset second time threshold value, controlling the refrigerating system to keep executing a preset third refrigerating operation.
It is to be understood that when the cooling time period of the first evaporator 3 is less than or equal to the preset first time period threshold value and the cooling time period of the second evaporator 4 is less than or equal to the preset second time period threshold value, it indicates that the frost formation amount on both the first evaporator 3 and the second evaporator 4 does not reach a certain amount, and thus the refrigeration system is controlled to maintain the preset third cooling operation.
Specifically, when the cooling time of the first evaporator 3 is less than or equal to a preset first time threshold and the cooling time of the second evaporator 4 is less than or equal to a preset second time threshold, controlling the cooling system to keep executing a preset third cooling operation specifically includes:
and when the refrigerating time of the first evaporator 3 is less than or equal to a preset first time threshold value and the refrigerating time of the second evaporator 4 is less than or equal to a preset second time threshold value, controlling the first heater 7 and the second heater 8 to stop working and controlling the compressor 1, the first fan 5 and the second fan 6 to work.
In some embodiments of the invention, the controller is further configured to:
and when a refrigeration instruction is received, controlling the refrigeration system to execute a preset third refrigeration operation.
As can be appreciated, the third refrigeration operation is, in particular:
the first heater 7 and the second heater 8 are controlled to stop working, and the compressor 1, the first fan motor 5 and the second fan motor 6 are controlled to work.
In some embodiments of the present invention, in order to obtain the temperature and the cooling time of the first evaporator 3 and the second evaporator 4, the refrigerator of the present embodiment further includes:
a first temperature sensor for acquiring the temperature of the first evaporator 3 and the refrigerating time of the first evaporator 3;
and the second temperature sensor is used for acquiring the temperature of the second evaporator 4 and the refrigerating time of the second evaporator 4.
Specifically, the output end of the first temperature sensor is connected with the first input end of the controller, so that the controller can receive the temperature of the first evaporator 3 and the refrigerating time of the first evaporator 3, which are collected by the first temperature sensor; the output end of the second temperature sensor is connected with the second input end of the controller, so that the controller can receive the temperature of the second evaporator 4 collected by the second temperature sensor and the refrigerating time of the second evaporator 4.
In summary, the present invention provides a refrigerator, comprising: a case for forming a low-temperature storage space; a refrigeration system for supplying cold to the low-temperature storage space, the refrigeration system comprising: a compressor 1; a condenser 2, a first end of the condenser 2 is connected with a first end of the compressor 1; a throttling device 10, wherein a first end of the throttling device 10 is connected with a second end of the condenser 2; a first evaporator 3, wherein a first end of the first evaporator 3 is connected with a second end of the throttling device 10; a second evaporator 4, a first end of the second evaporator 4 being connected to a second end of the first evaporator 3, a second end of the second evaporator 4 being connected to a second end of the compressor 1; the first fan motor 5 is used for blowing the cold energy provided by the first evaporator 3 to the low-temperature storage space; the second fan motor 6 is used for blowing the cold energy provided by the second evaporator 4 to the low-temperature storage space; a first heater 7 for supplying heat to the first evaporator 3 to remove frost from the first evaporator 3; a second heater 8 for supplying heat to the second evaporator 4 to remove frost from the second evaporator 4; and a controller configured to: acquiring the refrigerating time of the first evaporator 3 and the refrigerating time of the second evaporator 4 in real time; wherein the refrigeration time of the first evaporator 3 is the time when the temperature of the first evaporator 3 is continuously less than or equal to a preset first temperature threshold value; the refrigerating time of the second evaporator 4 is the time when the temperature of the second evaporator 4 is continuously less than or equal to a preset second temperature threshold value; when the refrigerating time of the first evaporator 3 is greater than a preset first time threshold and the refrigerating time of the second evaporator 4 is less than or equal to a preset second time threshold, controlling the refrigerating system to execute a first defrosting operation until the temperature of the first evaporator 3 is greater than the first temperature threshold; wherein the first defrost operation is: controlling the compressor 1, the first fan motor 5 and the second heater 8 to stop working, and controlling the first heater 7 and the second fan motor 6 to work; and after the first defrosting operation is executed, controlling the refrigeration system to execute a preset first refrigeration operation. When the refrigerating time of the first evaporator 3 is greater than a preset first time threshold and the refrigerating time of the second evaporator 4 is less than or equal to a preset second time threshold, the compressor 1, the first fan motor 5 and the second heater 8 are controlled to stop working, and the first heater 7 and the second fan motor 6 are controlled to work until the temperature of the first evaporator 3 is greater than the first temperature threshold, so that the frost on the first evaporator 3 is removed, and meanwhile, the cold energy of the second evaporator 5 can be kept being provided to the low-temperature storage space to maintain the temperature of the low-temperature storage space in the refrigerator, thereby reducing the temperature rise amplitude of the low-temperature storage space in the defrosting process of the evaporator, further ensuring the quality of food in the refrigerator, and reducing the power consumption of the refrigerator, the refrigerator has a good energy-saving effect, so that the user experience is improved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. A refrigerator, characterized by comprising:
a low temperature storage space;
a refrigeration system for supplying cold to the low-temperature storage space, the refrigeration system comprising:
a compressor;
a condenser, a first end of the condenser being connected to a first end of the compressor;
a first end of the throttling device is connected with a second end of the condenser;
a first end of the first evaporator is connected with a second end of the throttling device;
a second evaporator, a first end of the second evaporator being connected to a second end of the first evaporator, a second end of the second evaporator being connected to a second end of the compressor;
the first fan motor is used for providing the cold energy of the first evaporator to the low-temperature storage space;
the second fan motor is used for providing the cold energy of the second evaporator to the low-temperature storage space;
the first heater is used for providing heat for the first evaporator so as to remove frost on the first evaporator;
the second heater is used for providing heat for the second evaporator so as to clear frost on the second evaporator; and the number of the first and second groups,
a controller configured to:
acquiring the refrigerating time of the first evaporator and the refrigerating time of the second evaporator in real time; the refrigeration time length of the first evaporator is the time length that the temperature of the first evaporator is continuously less than or equal to a preset first temperature threshold value; the refrigerating time of the second evaporator is the time when the temperature of the second evaporator is continuously less than or equal to a preset second temperature threshold value;
when the refrigerating time of the first evaporator is greater than a preset first time threshold and the refrigerating time of the second evaporator is less than or equal to a preset second time threshold, controlling the refrigerating system to execute a first defrosting operation until the temperature of the first evaporator is greater than the first temperature threshold; wherein the first defrost operation is: controlling the compressor, the first fan motor and the second heater to stop working, and controlling the first heater and the second fan motor to work;
and after the first defrosting operation is executed, controlling the refrigeration system to execute a preset first refrigeration operation.
2. The refrigerator according to claim 1, wherein the controlling the refrigeration system to perform a preset first refrigeration operation after performing the first defrosting operation includes:
after the first defrosting operation is executed, controlling the first heater and the second heater to stop working, and controlling the compressor and the second fan motor to work;
and when the running time of the second fan motor reaches a preset third time threshold, controlling the first fan motor to start working.
3. The refrigerator of claim 1, wherein the controller is further configured to:
when the refrigerating time of the first evaporator is less than or equal to a preset first time threshold and the refrigerating time of the second evaporator is greater than a preset second time threshold, controlling the refrigerating system to execute a second defrosting operation until the temperature of the second evaporator is greater than a second temperature threshold; wherein the second defrost operation is: controlling the compressor, the second fan motor and the first heater to stop working, and controlling the second heater and the first fan motor to work;
and after the second defrosting operation is executed, controlling the refrigerating system to execute a preset second refrigerating operation.
4. The refrigerator according to claim 3, wherein the controlling the refrigeration system to perform a preset second refrigeration operation after performing the second defrosting operation includes:
after the second defrosting operation is executed, controlling the first heater and the second heater to stop working, and controlling the compressor and the first fan motor to work;
and when the running time of the first fan motor reaches a preset fourth time threshold, controlling the second fan motor to start working.
5. The refrigerator of claim 1, wherein the controller is further configured to:
when the refrigerating time of the first evaporator is greater than a preset first time threshold and the refrigerating time of the second evaporator is greater than a preset second time threshold, controlling the refrigerating system to execute a third defrosting operation until the temperature of the first evaporator is greater than the first temperature threshold or until the temperature of the second evaporator is greater than the second temperature threshold; wherein the third defrost operation is: controlling the compressor, the first fan motor and the second fan motor to stop working, and controlling the first heater and the second heater to work;
and after the third defrosting operation is executed, controlling the refrigeration system to execute a preset third refrigeration operation.
6. The refrigerator of claim 1, wherein the controller is further configured to:
and when the refrigerating time of the first evaporator is less than or equal to a preset first time threshold value and the refrigerating time of the second evaporator is less than or equal to a preset second time threshold value, controlling the refrigerating system to keep executing a preset third refrigerating operation.
7. The refrigerator of claim 1, wherein the controller is further configured to:
and when a refrigeration instruction is received, controlling the refrigeration system to execute a preset third refrigeration operation.
8. The refrigerator according to any one of claims 5 to 7, characterized in that the third cooling operation is, in particular:
and controlling the first heater and the second heater to stop working, and controlling the compressor, the first fan motor and the second fan motor to work.
9. The refrigerator according to any one of claims 1 to 7, wherein the refrigerator further comprises:
the first temperature sensor is used for acquiring the temperature of the first evaporator and the refrigerating time of the first evaporator;
and the second temperature sensor is used for acquiring the temperature of the second evaporator and the refrigerating time of the first evaporator.
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| CN202010424674.XA CN111649516B (en) | 2020-05-19 | 2020-05-19 | A kind of refrigerator |
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| CN114508891A (en) * | 2020-11-16 | 2022-05-17 | 合肥美的电冰箱有限公司 | Refrigerator refrigerating system and refrigerator defrosting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766577A (en) * | 2016-12-16 | 2017-05-31 | 青岛海尔股份有限公司 | The frosting degree detecting method and apparatus of wind cooling refrigerator |
| CN109442785A (en) * | 2018-10-30 | 2019-03-08 | 海信容声(广东)冰箱有限公司 | Refrigeration equipment and control method |
| CN110701866A (en) * | 2019-11-20 | 2020-01-17 | 合肥晶弘电器有限公司 | Defrosting control method of refrigerator and refrigerator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2012087952A (en) * | 2010-10-15 | 2012-05-10 | Sharp Corp | Refrigerator freezer |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766577A (en) * | 2016-12-16 | 2017-05-31 | 青岛海尔股份有限公司 | The frosting degree detecting method and apparatus of wind cooling refrigerator |
| CN109442785A (en) * | 2018-10-30 | 2019-03-08 | 海信容声(广东)冰箱有限公司 | Refrigeration equipment and control method |
| CN110701866A (en) * | 2019-11-20 | 2020-01-17 | 合肥晶弘电器有限公司 | Defrosting control method of refrigerator and refrigerator |
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