CN113266978B - Refrigerator and control method thereof - Google Patents

Refrigerator and control method thereof Download PDF

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Publication number
CN113266978B
CN113266978B CN202110527394.6A CN202110527394A CN113266978B CN 113266978 B CN113266978 B CN 113266978B CN 202110527394 A CN202110527394 A CN 202110527394A CN 113266978 B CN113266978 B CN 113266978B
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China
Prior art keywords
fan
air
refrigerating
refrigerating chamber
evaporator
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CN202110527394.6A
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Chinese (zh)
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CN113266978A (en
Inventor
董安琪
马科帅
王绚
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Hisense Shandong Refrigerator Co Ltd
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Hisense Shandong Refrigerator Co Ltd
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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
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/067—Evaporator fan units
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/08—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation using ducts
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • F25D2317/041—Treating air flowing to refrigeration compartments by purification
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/065—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
    • F25D2317/0682—Two or more fans
    • 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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

The invention discloses a refrigerator, comprising: a box body, wherein a refrigerating chamber and a freezing chamber are arranged in the box body; the refrigerating system comprises a fan assembly, an air duct plate and an evaporator; the air duct plate is arranged on one side of the refrigerating chamber, the interior of the air duct plate is of a cavity structure, and one side of the air duct plate, which is close to the refrigerating chamber, is provided with at least one air outlet and at least one air return inlet; the fan assembly is arranged in the through hole of the air duct plate and comprises a first fan and a second fan which are arranged back to back; the controller is configured to: when the refrigerating chamber is in a quick refrigerating mode, turning off the first fan and turning on the second fan; when the refrigerating chamber is in a refrigeration stopping mode, the first fan is turned on and the second fan is turned off; and when the refrigerating chamber is in a periodic refrigerating mode, the first fan and the second fan are started simultaneously. The invention also discloses a refrigerator control method. By adopting the embodiment of the invention, the local refrigeration temperature fluctuation can be reduced, and the freezing of shelves or food blown by low-temperature air supply directly can be avoided.

Description

Refrigerator and control method thereof
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator and a control method thereof.
Background
The refrigeration mode of the refrigerating chamber in the existing air-cooled refrigerator is generally as follows: the return air of the refrigerating chamber is driven by the fan to blow across the cold surface of the evaporator, then the temperature is reduced, and the return air is blown to the refrigerating chamber through the air supply outlet, so that the refrigerating space is finally reduced to the target temperature. Although the cooling mode is simple and rapid, the defect that the temperature of refrigerated air supply is too low exists. In the existing design scheme, in order to meet the storage temperature condition of the refrigerating chamber and the freezing chamber, the refrigerating air supply temperature is usually below-10 ℃, so that the temperature fluctuation in the refrigerating chamber is large, and the temperature control and the food storage of the refrigerating chamber are not facilitated; on the other hand, the layer frame or food which is blown directly by low-temperature air is easy to freeze, so that the food is frozen.
Disclosure of Invention
The embodiment of the invention aims to provide a refrigerator and a control method thereof, which can reduce local refrigeration temperature fluctuation and avoid freezing of shelves or food blown by low-temperature air supply directly.
To achieve the above object, an embodiment of the present invention provides a refrigerator, including:
a box body, wherein a refrigerating chamber and a freezing chamber are arranged in the box body;
the refrigerating system comprises a fan assembly, an air duct plate and an evaporator; the air duct plate is arranged on one side of the refrigerating chamber, the interior of the air duct plate is of a cavity structure, and one side of the air duct plate, which is close to the refrigerating chamber, is provided with at least one air outlet and at least one air return opening; the fan assembly is arranged in the through hole of the air duct plate and comprises a first fan and a second fan which are arranged back to back;
the controller is configured to:
when the refrigerating chamber is in a quick refrigerating mode, the first fan is turned off and the second fan is turned on, so that refrigerating gas in the refrigerating chamber is output to the evaporator through the air return opening, is cooled by the evaporator and is conveyed into the refrigerating chamber through the air outlet;
when the refrigerating chamber is in a refrigeration stopping mode, the first fan is turned on and the second fan is turned off, so that the first fan sucks refrigerating gas in the refrigerating chamber and conveys the refrigerating gas back to the refrigerating chamber through the air outlet;
when the refrigerating chamber is in a periodic refrigerating mode, the first fan and the second fan are started simultaneously, so that refrigerating air sucked by the first fan and cooling air output by the evaporator and conveyed by the second fan are mixed in the air duct plate and blown to the refrigerating chamber through the air outlet.
As an improvement of the above scheme, the refrigeration system further comprises a temperature sensor, and the temperature sensor is arranged at the air outlet; then, after said turning on said first fan and turning off said second fan, said controller is further configured to:
acquiring the blowing temperature detected by the temperature sensor in real time;
and adjusting the rotating speeds of the first fan and the second fan according to the blowing temperature.
As an improvement of the above scheme, the adjusting the rotation speeds of the first fan and the second fan according to the blowing temperature includes:
when the blowing temperature is greater than or equal to a preset blowing temperature upper limit value, reducing the rotating speed of the first fan or increasing the rotating speed of the second fan;
and when the blowing temperature is less than or equal to a preset blowing temperature lower limit value, increasing the rotating speed of the first fan or reducing the rotating speed of the second fan.
As an improvement of the above scheme, the adjusting the rotation speeds of the first fan and the second fan according to the blowing temperature further includes:
and when the blowing temperature is greater than the blowing temperature lower limit value and less than the blowing temperature upper limit value, keeping the current rotating speeds of the first fan and the second fan unchanged.
As an improvement of the above scheme, the fan assembly further comprises a filter screen, and the first fan and the second fan are arranged in the filter screen.
As an improvement of the above scheme, the evaporator is an evaporator acting on the refrigerating chamber in a dual-system refrigerator; then, the evaporator is arranged in the refrigeration air duct, and the air return opening is positioned below the input opening of the evaporator.
As an improvement of the above scheme, the evaporator is an evaporator which acts on the refrigerating chamber and the freezing chamber simultaneously in a single-system refrigerator; then, the evaporator is arranged in the air duct on one side of the freezing chamber, the air return opening is connected with a cold storage air return pipe, one end of the cold storage air return pipe is connected with the air return opening, and the other end of the cold storage air return pipe is connected with the input opening of the evaporator.
In order to achieve the above object, an embodiment of the present invention further provides a refrigerator control method, which is applicable to a refrigeration system in a refrigerator, where the refrigeration system includes a fan assembly, an air duct plate, and an evaporator; the air duct plate is arranged on one side of the refrigerating chamber, the interior of the air duct plate is of a cavity structure, and one side of the air duct plate, which is close to the refrigerating chamber, is provided with at least one air outlet and at least one air return opening; the fan assembly is arranged in the through hole of the air duct plate and comprises a first fan and a second fan which are arranged back to back; the refrigerator control method includes:
when the refrigerating chamber is in a quick refrigerating mode, the first fan is turned off and the second fan is turned on, so that refrigerating gas in the refrigerating chamber is output to the evaporator through the air return opening, is cooled by the evaporator and is conveyed into the refrigerating chamber through the air outlet;
when the refrigerating chamber is in a refrigeration stopping mode, the first fan is turned on and the second fan is turned off, so that the first fan sucks refrigerating gas in the refrigerating chamber and conveys the refrigerating gas back to the refrigerating chamber through the air outlet;
when the refrigerating chamber is in a periodic refrigerating mode, the first fan and the second fan are started simultaneously, so that refrigerating air sucked by the first fan and cooling air output by the evaporator and conveyed by the second fan are mixed in the air duct plate and blown to the refrigerating chamber through the air outlet.
As an improvement of the above scheme, the refrigeration system further comprises a temperature sensor, and the temperature sensor is arranged at the air outlet; then, after said turning on said first fan and turning off said second fan, said controller is further configured to:
acquiring the blowing temperature detected by the temperature sensor in real time;
and adjusting the rotating speeds of the first fan and the second fan according to the blowing temperature.
As an improvement of the above scheme, the adjusting the rotation speeds of the first fan and the second fan according to the blowing temperature includes:
when the blowing temperature is greater than or equal to a preset blowing temperature upper limit value, reducing the rotating speed of the first fan or increasing the rotating speed of the second fan;
and when the blowing temperature is less than or equal to a preset blowing temperature lower limit value, increasing the rotating speed of the first fan or reducing the rotating speed of the second fan.
Compared with the prior art, the refrigerator and the control method thereof disclosed by the embodiment of the invention have the advantages that the two first fans and the two second fans which are arranged back to back are arranged in the refrigerating air duct, and each fan can independently control the on-off and the rotating speed. When only the second fan rotates, the low-temperature air cooled by the evaporator driven by the second fan is blown to the refrigerating chamber through the air outlet, so that the refrigerating chamber can be quickly cooled; when only the first fan rotates, the refrigerated air sucked by the first fan is divided by the air duct plate and then blown out of the air outlets, so that the temperature of the refrigerating chamber is uniformly distributed; when the two fans rotate simultaneously, cooling gas driven by the second fan and cold storage gas sucked by the first fan are mixed in the air duct plate, and the cold storage blowing temperature is increased. When cold-stored temperature was too high, but it can rapid cooling to open the second alone, when cold-stored being in uncooled state, opens first fan alone and can make the interior temperature distribution of freezer more even, does benefit to the temperature control and the food storage of freezer. Particularly, the cold storage air outlet is provided with a blowing temperature sensor, when the blowing temperature is judged to be too low or too high, the control instruction is output to change the rotating speed of the two fans, the flow rate and the mixing proportion of cold air and hot air are adjusted, the blowing temperature is adjusted, the cold storage air supply temperature is improved in a mode of mixing cold storage return air with the cold air, the local cold storage temperature fluctuation is reduced, and the freezing of a shelf or food directly blown by low-temperature air supply is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a fan assembly provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a distribution of fans in a single system refrigerator provided by an embodiment of the present invention;
fig. 4 is a flowchart of a refrigerator control method according to an embodiment of the present invention.
10, a refrigerating chamber; 20. a freezing chamber; 30. a fan assembly; 40. an air duct plate; 50. a temperature sensor; 60. an evaporator; 70. refrigerating the return air pipe; 80. a freezing fan; 101. an air outlet; 102. an air return opening; 301. a first fan; 302. a second fan; 303. and (4) a filter screen.
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.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention, where the refrigerator includes:
a cabinet having a refrigerating chamber 10 and a freezing chamber 20 therein;
a refrigeration system comprising a fan assembly 30, an air duct plate 40 and an evaporator 60; the air duct plate 40 is arranged on one side of the refrigerating chamber 10, the interior of the air duct plate is of a cavity structure, and one side of the air duct plate close to the refrigerating chamber 10 is provided with at least one air outlet 101 and at least one air return opening 102; referring to fig. 2, the fan assembly 30 is disposed in the through hole of the air duct plate 40, and includes a first fan 301 and a second fan 302 which are disposed back to back;
the controller is configured to:
when the refrigerating chamber 10 is in a fast cooling mode, the first fan 301 is turned off and the second fan 302 is turned on, so that the refrigerating gas in the refrigerating chamber 10 is output to the evaporator 60 through the air return opening 102, is cooled by the evaporator 60, and is conveyed into the refrigerating chamber 10 through the air outlet 101;
when the refrigerating chamber 10 is in a cooling stop mode, the first fan 301 is turned on and the second fan 302 is turned off, so that the first fan 301 sucks refrigerating gas in the refrigerating chamber 10 and conveys the refrigerating gas back to the refrigerating chamber 10 through the air outlet 101;
when the refrigerating chamber 10 is in the periodic cooling mode, the first fan 301 and the second fan 302 are simultaneously started, so that the refrigerating gas sucked by the first fan 301 and the cooling gas output by the evaporator 60 and conveyed by the second fan 302 are mixed in the air duct plate 40 and blown to the refrigerating chamber 10 through the air outlet 101.
For example, in the rapid cooling mode, the refrigerator is just started or the gear of the refrigerator is turned down, at this time, the refrigerating chamber 10 needs rapid cooling, the second fan 302 is started and the first fan 301 is turned off, the refrigerating gas near the return air inlet 102 enters the cavity where the evaporator 60 is located through the return air inlet 102, the evaporator 60 sufficiently cools the refrigerating gas, the refrigerating gas enters the cavity structure of the air duct plate 40 through the suction effect of the second fan 302, and finally the refrigerating gas is blown to the refrigerating chamber 10 by the air outlet 101 in a shunting manner, so that the refrigerating cycle process of the refrigerating chamber 10 is completed, and rapid cooling is realized.
The refrigeration stopping mode is that the temperature of the refrigerating chamber 10 reaches the set temperature of the refrigerating chamber 10, at the moment, the evaporator 60 stops working, the first fan 301 is started, the second fan 302 is closed, refrigerating gas sucked by the first fan 301 flows into the cavity structure of the air duct plate 40, is shunted by the air outlet 101 and blows to the refrigerating chamber 10, the air flow of the refrigerating chamber 10 is accelerated, and the uniform temperature distribution of the refrigerating chamber 10 is realized;
in the periodic refrigeration mode, the temperature of the refrigerating chamber 10 needs to be reduced to a target temperature and kept stable continuously, at this time, the first fan 301 and the second fan 302 are started simultaneously, the refrigerated air sucked by the first fan 301 and the cooling air output by the evaporator 60 and conveyed by the second fan 302 are mixed in the cavity structure in the air duct plate 40, and are shunted by the air outlet 101 and blown to the refrigerating chamber 10, so that the temperature of the refrigerating chamber 10 is stabilized at the target temperature.
It can be understood that when only the first fan 301 is activated, the rotation speed of the first fan 301 can be adjusted according to the set temperature of the refrigerating chamber 10, and when the set temperature is lower, the rotation speed of the first fan 301 is higher. When only the second fan 302 is started, the rotation speed of the second fan 302 may be customized by a system or set by a user.
It should be noted that the evaporator 60 according to the embodiment of the present invention may be an evaporator 60 acting on the refrigerating chamber 10 in a dual system refrigerator, or the evaporator 60 may be an evaporator 60 acting on both the refrigerating chamber 10 and the freezing chamber 20 in a single system refrigerator. When the evaporator 60 can be the evaporator 60 in a dual-system refrigerator, the evaporator 60 is disposed in the refrigerating duct, and the return air inlet 102 is located below the input port of the evaporator 60. When the evaporator 60 is the evaporator 60 in the single-system refrigerator, referring to fig. 3, the evaporator 60 is disposed in the air duct on one side of the freezing chamber 20, the air return opening 102 is connected to a refrigerating air return pipe 70, one end of the refrigerating air return pipe 70 is connected to the air return opening 102, the other end is connected to the input port of the evaporator 60, the single-system refrigerator in fig. 3 only has one evaporator 60 installed outside the freezing chamber 20, the freezing chamber 20 is provided with a freezing fan 80, and the flow directions of the refrigerating gas in the refrigerating chamber 10 and the cooling gas in the evaporator 60 can be referred to the right diagram in fig. 3.
Further, the refrigeration system further comprises a temperature sensor 50, and the temperature sensor 50 is arranged at the air outlet 101; then, after turning on the first fan 301 and turning off the second fan 302, the controller is further configured to:
acquiring the blowing temperature detected by the temperature sensor 50 in real time;
the rotating speeds of the first fan 301 and the second fan 302 are adjusted according to the blowing temperature.
The adjusting the rotation speed of the first fan 301 and the second fan 302 according to the blowing temperature includes:
when the blowing temperature is greater than or equal to a preset blowing temperature upper limit value, reducing the rotating speed of the first fan 301 or increasing the rotating speed of the second fan 302;
when the blowing temperature is less than or equal to a preset blowing temperature lower limit value, increasing the rotating speed of the first fan 301 or decreasing the rotating speed of the second fan 302;
when the blowing temperature is greater than the blowing temperature lower limit value and less than the blowing temperature upper limit value, the current rotation speeds of the first fan 301 and the second fan 302 are kept unchanged.
Illustratively, the system is adjusted and controlled in real time according to the temperature of the refrigerating chamber 10 and the change condition of the blowing temperature, so that the system can be ensured to operate efficiently all the time. Judging whether the real-time temperature of the refrigerating chamber 10 is lower than the shutdown temperature trk of the refrigerating chamber 10, if so, ending the control, and at the moment, enabling the refrigerating chamber 10 to be in a refrigeration stopping mode; if not, the first fan 301 and the second fan 302 operate according to the input rotating speeds f1 and f 2; and judging whether the real-time air blowing temperature tw of the refrigerating chamber 10 is between the lower limit value twk1 of the preset air blowing temperature of the refrigerating chamber 10 and the lower limit value twk2 of the preset air blowing temperature of the refrigerating chamber 10. If so, indicating that the rotating speeds of the two fans are proper at the moment, continuously refrigerating until the real-time refrigerating temperature tr is reduced to the shutdown temperature trk of the refrigerating chamber 10, and ending the control; if the real-time air blowing temperature of the refrigerating chamber 10 is not higher or lower, the rotating speed f1 of the first fan 301 is reduced or the rotating speed of the second fan 302 is increased if the real-time air blowing temperature of the refrigerating chamber 10 is higher or lower, so that the air quantity of the refrigerating chamber 10 directly returning to the air duct is reduced, the return air quantity passing through the evaporator 60 is increased, and the rotating speed f1 of the first fan 301 is increased or the rotating speed f2 of the second fan 302 is reduced if the real-time air blowing temperature of the refrigerating chamber 10 is lower or higher than twk2, so that the air quantity of the refrigerating chamber 10 directly returning to the air duct is increased, and the return air quantity passing through the evaporator 60 is reduced.
Further, as shown in fig. 2, the fan assembly 30 further includes a filter 303, and the first fan 301 and the second fan 302 are disposed in the filter 303. The filter screen 303 plays a role of purifying air.
Compared with the prior art, the refrigerator disclosed by the embodiment of the invention is provided with the first fan 301 and the second fan 302 which are arranged back to back in the refrigerating air duct, and each fan can be independently controlled to start and stop and rotate at the same speed. When only the second fan 302 rotates, the low-temperature air cooled by the evaporator 60 driven by the second fan 302 is blown to the refrigerating chamber 10 through the air outlet 101, so that the refrigerating chamber 10 can be rapidly cooled; when only the first fan 301 rotates, the refrigerated air sucked by the first fan 301 is divided by the air duct plate 40 and then blown out of the air outlets 101, so that the temperature of the refrigerating chamber 10 is uniformly distributed; when the two fans rotate simultaneously, the cooling air driven by the second fan 302 is mixed with the refrigerating air sucked by the first fan 301 in the air duct plate 40, and the refrigerating air blowing temperature is increased. When the refrigerating temperature is too high, the second fan 302 is independently started to quickly cool, and when the refrigerating is in an uncooled state, the first fan 301 is independently started to enable the temperature in the refrigerating chamber 10 to be more uniformly distributed, so that the temperature control and the food storage of the refrigerating chamber 10 are facilitated. Particularly, the cold storage air outlet 101 is provided with the air blowing temperature sensor 50, when the air blowing temperature is judged to be too low or too high, the control instruction is output to change the rotating speed of the two fans, the flow and the mixing proportion of cold air and hot air are adjusted, the air blowing temperature is adjusted, the cold storage air supply temperature is improved in a mode of mixing cold storage return air with the cold air, the local cold storage temperature fluctuation is reduced, and the freezing of shelves or food directly blown by low-temperature air supply is avoided.
Referring to fig. 4, fig. 4 is a flowchart of a refrigerator control method according to an embodiment of the present invention; the refrigerator control method is suitable for a refrigerating system in the refrigerator, wherein the refrigerating system comprises a fan assembly, an air duct plate and an evaporator; the air duct plate is arranged on one side of the refrigerating chamber, the interior of the air duct plate is of a cavity structure, and one side of the air duct plate, which is close to the refrigerating chamber, is provided with at least one air outlet and at least one air return opening; the fan assembly is arranged in the through hole of the air duct plate and comprises a first fan and a second fan which are arranged back to back; the refrigerator control method includes:
s1, when the refrigerating chamber is in a quick refrigerating mode, closing the first fan and opening the second fan so that refrigerating gas in the refrigerating chamber is output to the evaporator through the air return opening, is cooled by the evaporator and is conveyed into the refrigerating chamber through the air outlet;
s2, when the refrigerating chamber is in a cooling stop mode, turning on the first fan and turning off the second fan so that the first fan sucks refrigerating gas in the refrigerating chamber and conveys the refrigerating gas back to the refrigerating chamber through the air outlet;
and S3, when the refrigerating chamber is in a periodic refrigerating mode, simultaneously starting the first fan and the second fan, so that refrigerating air sucked by the first fan and cooling air output by the evaporator and conveyed by the second fan are mixed in the air duct plate and blown to the refrigerating chamber through the air outlet.
Specifically, in step S1, the rapid cooling mode is that the refrigerator is just started or the gear of the refrigerator is turned down, and at this time, the refrigerating chamber needs rapid cooling, the second fan is started and the first fan is turned off, the refrigerating gas near the return air inlet enters the chamber where the evaporator is located through the return air inlet, the evaporator sufficiently cools the refrigerating gas, the refrigerating gas enters the cavity structure of the air duct plate through the suction effect of the second fan, and finally the refrigerating gas is blown to the refrigerating chamber by the air outlet in a shunting manner, so that the refrigerating cycle process of the refrigerating chamber is completed, and rapid cooling is realized.
Specifically, in step S2, in the cooling stop mode, when the temperature of the refrigerating chamber reaches a preset temperature of the refrigerating chamber, the evaporator stops working, the first fan is started, and the second fan is turned off, so that the refrigerating gas sucked by the first fan flows into the cavity structure of the air duct plate and is shunted by the air outlet to blow towards the refrigerating chamber, thereby accelerating the air flow in the refrigerating chamber and realizing uniform distribution of the temperature of the refrigerating chamber;
specifically, in step S3, in the periodic cooling mode, the temperature of the refrigerating chamber needs to be lowered to a target temperature and kept continuously stable, at this time, the first fan and the second fan are simultaneously started, the refrigerated gas sucked by the first fan and the cooling gas output by the evaporator and delivered by the second fan are mixed in the cavity structure in the air duct plate, and are shunted by the air outlet and blown to the refrigerating chamber, so that the temperature of the refrigerating chamber is stabilized at the target temperature.
It can be understood that when only the first fan is started, the rotating speed of the first fan can be adjusted according to the set temperature of the refrigerating chamber, and when the set temperature is lower, the rotating speed of the first fan is higher. When only the second fan is started, the rotating speed of the second fan can be customized by a system or set by a user.
It should be noted that the evaporator according to the embodiment of the present invention may be an evaporator acting on the refrigerating chamber in a dual system refrigerator, or may be an evaporator acting on both the refrigerating chamber and the freezing chamber in a single system refrigerator. When the evaporator can be an evaporator in a dual-system refrigerator, the evaporator is arranged in the refrigerating air duct, and the air return opening is positioned below the input opening of the evaporator. When the evaporator is an evaporator in a single-system refrigerator, referring to fig. 3, the evaporator is arranged in an air duct on one side of the freezing chamber, a refrigerating return air pipe is connected to the return air outlet, one end of the refrigerating return air pipe is connected with the return air inlet, the other end of the refrigerating return air pipe is connected with an input port of the evaporator, the single-system refrigerator in fig. 3 only has one evaporator installed outside the freezing chamber, the freezing chamber is provided with a freezing fan, and the flow directions of refrigerating gas in the refrigerating chamber and cooling gas of the evaporator can be referred to as a right diagram in fig. 3.
Furthermore, the refrigeration system also comprises a temperature sensor, and the temperature sensor is arranged at the air outlet; then, after the first fan is turned on and the second fan is turned off, the refrigerator control method further includes:
s31, acquiring the blowing temperature detected by the temperature sensor in real time;
and S32, adjusting the rotating speed of the first fan and the second fan according to the blowing temperature.
The step S32 specifically includes:
s321, when the blowing temperature is greater than or equal to a preset blowing temperature upper limit value, reducing the rotating speed of the first fan or increasing the rotating speed of the second fan;
s322, when the blowing temperature is smaller than or equal to a preset blowing temperature lower limit value, increasing the rotating speed of the first fan or reducing the rotating speed of the second fan;
s323, when the blowing temperature is larger than the blowing temperature lower limit value and smaller than the blowing temperature upper limit value, keeping the current rotating speeds of the first fan and the second fan unchanged.
Exemplarily, the system is adjusted and controlled in real time according to the temperature of the refrigerating chamber and the change condition of the blowing temperature, and the system is guaranteed to operate efficiently all the time. Judging whether the real-time temperature of the refrigerating chamber is lower than the shutdown temperature trk of the refrigerating chamber, if so, ending the control, and at the moment, enabling the refrigerating chamber to be in a refrigeration stopping mode; if not, the first fan and the second fan operate according to input rotating speeds f1 and f 2; and judging whether the real-time air blowing temperature tw of the refrigerating chamber is between the lower limit value twk1 of the preset air blowing temperature of the refrigerating chamber and the lower limit value twk2 of the preset air blowing temperature of the refrigerating chamber. If so, indicating that the rotating speeds of the two fans are proper at the moment, continuously refrigerating until the refrigerating real-time temperature tr is reduced to the refrigerating chamber shutdown temperature trk, and ending the control; if the real-time air blowing temperature of the refrigerating chamber is not higher or lower, the rotating speed f1 of the first fan is reduced or the rotating speed of the second fan is increased if the real-time air blowing temperature of the refrigerating chamber is higher (tw is more than or equal to twk2), so that the air quantity of the refrigerating chamber directly returned to the air duct is reduced, the return air quantity passing through the evaporator is increased, if the real-time air blowing temperature of the refrigerating chamber is lower (tw is less than or equal to twk1), the rotating speed f1 of the first fan is increased or the rotating speed f2 of the second fan is reduced, the air quantity of the refrigerating chamber directly returned to the air duct is increased, and the return air quantity passing through the evaporator is reduced.
Furthermore, the fan assembly further comprises a filter screen, and the first fan and the second fan are arranged in the filter screen. The filter screen plays a role in purifying air.
Compared with the prior art, the refrigerator control method disclosed by the embodiment of the invention has the advantages that the first fan and the second fan which are arranged back to back are arranged in the refrigerating air duct, and the start and stop and the rotating speed of each fan can be independently controlled. When only the second fan rotates, the low-temperature air cooled by the evaporator driven by the second fan is blown to the refrigerating chamber through the air outlet, so that the refrigerating chamber can be quickly cooled; when only the first fan rotates, the refrigerated air sucked by the first fan is divided by the air duct plate and then blown out of the air outlets, so that the temperature of the refrigerating chamber is uniformly distributed; when the two fans rotate simultaneously, cooling air driven by the second fan is mixed with refrigerating air sucked by the first fan in the air duct plate, and refrigerating blowing temperature is improved. When cold-stored temperature was too high, but it can rapid cooling to open the second alone, when cold-stored being in uncooled state, opens first fan alone and can make the interior temperature distribution of freezer more even, does benefit to the temperature control and the food storage of freezer. Particularly, the cold storage air outlet is provided with a blowing temperature sensor, when the blowing temperature is judged to be too low or too high, the control instruction is output to change the rotating speed of the two fans, the flow rate and the mixing proportion of cold air and hot air are adjusted, the blowing temperature is adjusted, the cold storage air supply temperature is improved in a mode of mixing cold storage return air with the cold air, the local cold storage temperature fluctuation is reduced, and the freezing of a shelf or food directly blown by low-temperature air supply is avoided.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (10)

1. A refrigerator, characterized by comprising:
a box body, wherein a refrigerating chamber and a freezing chamber are arranged in the box body;
the refrigerating system comprises a fan assembly, an air duct plate and an evaporator; the air duct plate is arranged on one side of the refrigerating chamber, the interior of the air duct plate is of a cavity structure, and one side of the air duct plate, which is close to the refrigerating chamber, is provided with at least two air outlets which are arranged up and down and at least one air return opening; the fan assembly is arranged in the through hole of the air duct plate and comprises a first fan and a second fan which are arranged back to back;
the controller is configured to:
when the refrigerating chamber is in a quick refrigerating mode, the first fan is turned off and the second fan is turned on, so that refrigerating gas in the refrigerating chamber is output to the evaporator through the air return opening, is cooled by the evaporator and is conveyed into the refrigerating chamber through the air outlet;
when the refrigerating chamber is in a refrigerating stop mode, the first fan is turned on and the second fan is turned off, so that the first fan sucks refrigerating air in the refrigerating chamber and conveys the refrigerating air back to the refrigerating chamber through the air outlet;
when the refrigerating chamber is in a periodic refrigerating mode, the first fan and the second fan are started simultaneously, so that refrigerating air sucked by the first fan and cooling air output by the evaporator and conveyed by the second fan are mixed in the air duct plate and blown to the refrigerating chamber through the air outlet.
2. The refrigerator of claim 1, wherein the refrigeration system further comprises a temperature sensor, the temperature sensor being disposed at the air outlet; then, after said turning on said first fan and turning off said second fan, said controller is further configured to:
acquiring the blowing temperature detected by the temperature sensor in real time;
and adjusting the rotating speeds of the first fan and the second fan according to the blowing temperature.
3. The refrigerator of claim 1, wherein the adjusting of the rotation speeds of the first fan and the second fan according to the blowing temperature comprises:
when the blowing temperature is greater than or equal to a preset blowing temperature upper limit value, reducing the rotating speed of the first fan or increasing the rotating speed of the second fan;
and when the blowing temperature is less than or equal to a preset blowing temperature lower limit value, increasing the rotating speed of the first fan or reducing the rotating speed of the second fan.
4. The refrigerator of claim 3, wherein the adjusting of the rotation speeds of the first fan and the second fan according to the blowing temperature further comprises:
and when the blowing temperature is greater than the blowing temperature lower limit value and less than the blowing temperature upper limit value, keeping the current rotating speeds of the first fan and the second fan unchanged.
5. The refrigerator of claim 1, wherein the fan assembly further comprises a filter screen, and the first fan and the second fan are disposed in the filter screen.
6. The refrigerator as claimed in claim 1, wherein the evaporator is an evaporator acting on the refrigerating chamber in a dual system refrigerator; then, the evaporator is arranged in the refrigeration air duct, and the air return opening is positioned below the input opening of the evaporator.
7. The refrigerator as claimed in claim 1, wherein the evaporator is an evaporator simultaneously acting on the refrigerating chamber and the freezing chamber in a single system refrigerator; then, the evaporator is arranged in the air duct on one side of the freezing chamber, the air return opening is connected with a cold storage air return pipe, one end of the cold storage air return pipe is connected with the air return opening, and the other end of the cold storage air return pipe is connected with the input opening of the evaporator.
8. The refrigerator control method is characterized by being applicable to a refrigerating system in a refrigerator, wherein the refrigerating system comprises a fan assembly, an air duct plate and an evaporator; the air duct plate is arranged on one side of the refrigerating chamber, the interior of the air duct plate is of a cavity structure, and one side of the air duct plate, which is close to the refrigerating chamber, is provided with at least two air outlets arranged up and down and at least one air return opening; the fan assembly is arranged in the through hole of the air duct plate and comprises a first fan and a second fan which are arranged back to back; the refrigerator control method includes:
when the refrigerating chamber is in a quick refrigerating mode, the first fan is turned off and the second fan is turned on, so that refrigerating gas in the refrigerating chamber is output to the evaporator through the air return opening, is cooled by the evaporator and is conveyed into the refrigerating chamber through the air outlet;
when the refrigerating chamber is in a refrigerating stop mode, the first fan is turned on and the second fan is turned off, so that the first fan sucks refrigerating air in the refrigerating chamber and conveys the refrigerating air back to the refrigerating chamber through the air outlet;
when the refrigerating chamber is in a periodic refrigerating mode, the first fan and the second fan are started simultaneously, so that refrigerating air sucked by the first fan and cooling air output by the evaporator and conveyed by the second fan are mixed in the air duct plate and blown to the refrigerating chamber through the air outlet.
9. The method as claimed in claim 8, wherein the refrigeration system further includes a temperature sensor disposed at the air outlet; then, after said turning on said first fan and turning off said second fan, said controller is further configured to:
acquiring the blowing temperature detected by the temperature sensor in real time;
and adjusting the rotating speed of the first fan and the second fan according to the blowing temperature.
10. The method of controlling a refrigerator according to claim 8, wherein said adjusting the rotation speeds of the first fan and the second fan according to the blowing temperature comprises:
when the blowing temperature is greater than or equal to a preset blowing temperature upper limit value, reducing the rotating speed of the first fan or increasing the rotating speed of the second fan;
and when the blowing temperature is less than or equal to a preset blowing temperature lower limit value, increasing the rotating speed of the first fan or reducing the rotating speed of the second fan.
CN202110527394.6A 2021-05-14 2021-05-14 Refrigerator and control method thereof Active CN113266978B (en)

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CN115371323B (en) * 2021-10-11 2023-07-21 青岛海尔生物医疗股份有限公司 Refrigeration equipment and air duct assembly thereof
CN117367026B (en) * 2023-12-08 2024-02-09 珠海格力电器股份有限公司 Temperature control method, device, electronic equipment and storage medium

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