WO2019129243A1 - Procédé de commande permettant l'amélioration de la capacité d'évaporation de réfrigérateur et réfrigérateur - Google Patents

Procédé de commande permettant l'amélioration de la capacité d'évaporation de réfrigérateur et réfrigérateur Download PDF

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Publication number
WO2019129243A1
WO2019129243A1 PCT/CN2018/125057 CN2018125057W WO2019129243A1 WO 2019129243 A1 WO2019129243 A1 WO 2019129243A1 CN 2018125057 W CN2018125057 W CN 2018125057W WO 2019129243 A1 WO2019129243 A1 WO 2019129243A1
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WO
WIPO (PCT)
Prior art keywords
time
refrigerator
preset
preset time
water level
Prior art date
Application number
PCT/CN2018/125057
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English (en)
Chinese (zh)
Inventor
曹东强
Original Assignee
青岛海尔股份有限公司
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Publication of WO2019129243A1 publication Critical patent/WO2019129243A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/027—Condenser control arrangements
    • 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
    • F25D21/04—Preventing the formation of frost or condensate
    • 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
    • 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
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/01—Timing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F25B2600/111—Fan speed control of condenser fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/02—Humidity
    • 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
    • F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/141—Removal by evaporation
    • 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
    • F25D2600/02—Timing

Definitions

  • the invention relates to the technical field of household appliances, in particular to a control method for improving the evaporation capacity of a refrigerator and a refrigerator.
  • the refrigerator is generally provided with an evaporating dish for collecting condensed water and defrosting water.
  • the evaporating dish is generally placed in a press chamber, a heating coil is arranged in the evaporating dish, one end of the heating coil is connected to the exhaust pipe of the compressor, and the other end is connected to the inlet end of the condenser of the refrigerator, and the heating coil is entirely immersed in the In the water of the evaporating dish, the water is heated by the high-temperature refrigerant gas flowing through the heating coil.
  • the heating coil should be long enough to ensure that the defrosting water in the evaporating dish does not overflow, and the space of the press chamber is limited, and the increase in the length of the heating coil leads to a large space.
  • the problem is that it is not convenient to install other parts of the refrigerator; and the heat exchange amount of the heating coil of a limited length is small, and the evaporation speed is difficult to meet the use requirements.
  • a further object of the invention is to improve the evaporation capacity of the refrigerator and to enhance the overall performance of the refrigerator.
  • the present invention provides a control method for improving the evaporation capacity of a refrigerator, the refrigerator including a compressor, a condenser connected to the compressor, a condenser fan for accelerating heat dissipation of the condenser, and a condenser disposed below the condenser An evaporating dish; wherein the control method comprises:
  • the condensing fan runs for a preset time at a second speed lower than the first speed to increase the evaporation capacity of the evaporating dish.
  • the second rotational speed is 50% to 80% of the first rotational speed.
  • the preset time is determined according to the external environment humidity of the refrigerator and/or determined according to an average time of the refrigerator defrosting time interval and/or according to the water level in the evaporating dish.
  • the step of determining the preset time according to the ambient temperature of the external environment in which the refrigerator is located specifically includes:
  • the condensation fan runs at the second speed for the first preset time
  • the condensation fan operates at the second rotation speed for a second preset time
  • the condensing fan runs at the second speed for a third preset time
  • the first preset time is less than the second preset time, and the second preset time is less than the third preset time.
  • the step of determining the preset time according to the average time of the refrigerator defrosting time interval specifically includes:
  • the condensation fan runs at the second speed for a fourth preset time
  • the condensation fan runs at the second rotation speed for a fifth preset time
  • the condensation fan runs at the second speed for a sixth preset time
  • the fourth preset time is less than the fifth preset time, and the fifth preset time is less than the sixth preset time.
  • the step of determining the preset time according to the water level in the evaporating dish comprises:
  • the condensation fan runs at the second speed for the seventh preset time
  • the condensation fan runs at the second speed for the eighth preset time
  • the condensing fan runs at the second rotating speed for the ninth preset time
  • the seventh preset time is less than the eighth preset time, and the eighth preset time is less than the ninth preset time.
  • the step of determining the preset time according to the water level in the evaporating dish comprises:
  • the preset time is reduced.
  • a refrigerator comprising:
  • a compressor a condenser connected to the compressor, a condenser fan for accelerating heat dissipation of the condenser, an evaporating dish disposed below the condenser, and a controller;
  • the controller is configured to control the condensing fan to operate at the first speed when the compressor is turned on;
  • the controller is further configured to control the condensing fan to operate at a second speed less than the first speed for a predetermined time when the compressor is turned off to increase the evaporation capacity of the evaporating dish.
  • the refrigerator further includes:
  • a humidity sensor configured to detect an external environment humidity in which the refrigerator is located
  • the controller is also configured to determine a preset time based on the ambient humidity of the external environment.
  • the controller is further configured to obtain a defrosting time point of the refrigerator before the current time, calculate an average time of the refrigerator defrosting time interval, and determine a preset time according to an average time of the refrigerator defrosting time interval.
  • the refrigerator further includes:
  • a water level sensor configured to detect a water level in the evaporating dish
  • the controller is also configured to determine a preset time based on the water level in the evaporating dish.
  • the refrigerator further includes:
  • a water level sensor configured to detect a water level in the evaporating dish
  • the controller is also configured to gradually increase the water level in the evaporating dish to increase the preset time; the water level gradually decreases in the evaporating dish, and the preset time is reduced.
  • the control method for improving the evaporation capacity of the refrigerator of the invention after the compressor is turned off, the condensing fan is still running, and continues to run at a lower speed for a period of time, then stops, and the air flow above the evaporating dish is accelerated by the rotation of the condensing fan.
  • the evaporation ability of the water in the evaporating dish is increased to ensure that the water in the evaporating dish does not overflow; at the same time, the arrangement of the heating coil can be omitted, and a series of problems caused by the heating coil can be avoided.
  • the running time of the condensation fan is determined according to the external environment humidity, and/or determined according to the average time of the refrigerator defrosting time interval, and/or according to the evaporating dish
  • the water level in the medium is determined, thereby determining the appropriate time for the condensing fan to operate at the second speed, and reducing the power consumption of the condensing fan while improving the evaporation capacity and ensuring that the defrosting water does not overflow.
  • FIG. 1 is a schematic structural view of a refrigerator in accordance with one embodiment of the present invention.
  • FIG. 2 is a schematic structural view of a refrigerator in accordance with another embodiment of the present invention.
  • FIG. 3 is a schematic structural view of a refrigerator in accordance with still another embodiment of the present invention.
  • FIG. 4 is a flow chart of a control method for improving the evaporation capacity of a refrigerator according to an embodiment of the present invention
  • FIG. 5 is a flow chart showing a control method for improving the evaporation capacity of a refrigerator according to Embodiment 1 of the present invention.
  • FIG. 6 is a flow chart showing a control method for improving the evaporation capacity of a refrigerator according to Embodiment 2 of the present invention.
  • FIG. 7 is a flow chart showing a control method for improving the evaporation capacity of a refrigerator according to Embodiment 3 of the present invention.
  • Figure 8 is a schematic block diagram of a refrigerator in accordance with one embodiment of the present invention.
  • the refrigerator 1 can generally include a cabinet defining at least one front open storage compartment and a front compartment.
  • the side is used to open or close the door body of the storage compartment, and the outer periphery of the storage compartment is covered with a casing outer casing, and the casing outer casing and the storage compartment are filled with a heat insulating material, such as a foaming agent, to avoid cold.
  • a heat insulating material such as a foaming agent
  • the number and function of the specific storage compartments can be configured according to prior requirements.
  • the refrigerator can be a direct-cooling refrigerator or an air-cooled refrigerator, which can use a compression refrigeration cycle as a cooling source.
  • the refrigeration cycle system may generally include a compressor 10, a condenser 20, a capillary 50, an evaporator 30, and the like.
  • the refrigerant exchanges heat directly or indirectly with the storage compartment in the evaporator 30 at a low temperature, absorbs heat of the storage compartment and vaporizes, and the generated low pressure vapor is sucked by the compressor 10, and compressed by the compressor 10 to High-pressure discharge, the high-pressure gaseous refrigerant discharged from the compressor 10 enters the condenser 20, is cooled by the normal temperature cooling water or air, and condenses into a high-pressure liquid, and the high-pressure liquid flows through the capillary 50 to become a low-pressure low-temperature gas-liquid two-phase mixture. And entering the evaporator 30, wherein the liquid refrigerant evaporates and cools in the evaporator 30, and the generated low-pressure steam is again sucked by the compressor 10, so that the cycle is repeated, and the continuous cooling of the refrigerator is realized.
  • the refrigerator may further include a drying filter 40 connected between the condenser 20 and the capillary 50 for filtering the debris of the refrigeration system and absorbing residual moisture in the refrigeration system to prevent ice jam.
  • a dew tube 60 is usually disposed in the refrigerator.
  • the dew tube 60 is usually disposed in the interlayer of the door frame, and one end thereof is connected to the output end of the condenser 20, and the other end is connected.
  • the evaporator 30 is connected through the drying filter 40 and the capillary 50 to heat the refrigerator door frame with the residual heat of the refrigerant cooled by the condenser 20 to prevent dew condensation.
  • an evaporating fan 70 is further disposed in the refrigerator, and the evaporating fan 70 is configured to cause the air cooled by the evaporator 30 to flow to the storage compartment to transfer the cooling capacity to the storage compartment, and adjust the storage compartment. temperature.
  • the refrigerator further includes a condensing blower 80 configured to cause air that exchanges heat with the condenser 20 to flow to the outside of the refrigerator to accelerate heat dissipation of the condenser 20. .
  • the refrigerator is generally provided with an evaporating dish 90 for collecting condensed water and defrosting water.
  • the evaporating dish 90 is disposed at a lower portion of the condenser 20.
  • a heating coil 100 may be disposed in the evaporating dish 90.
  • One end of the heating coil 100 is connected to the exhaust pipe of the compressor 10, and the other end is connected to the inlet end of the condenser 20 of the refrigerator, and the heating coil 100 is entirely immersed in evaporation.
  • the water of the dish 90 the water is heated by the high-temperature refrigerant gas flowing through the heating coil 100.
  • the refrigerator of this embodiment further includes a controller 130.
  • the controller 130 is configured to control the condensing fan 80 to operate at a first speed when the compressor 10 is turned on; the controller 130 is further configured to control the condensing fan 80 to operate at a second speed less than the first speed when the compressor 10 is turned off. Set the time.
  • the compressor 10 when the refrigerator is cooled, the compressor 10 is turned on, and the controller 130 controls the condensation fan 80 to operate at the first rotation speed to ensure the heat dissipation of the condenser 20; when the temperature of the storage compartment reaches the set temperature, it is not required.
  • the compressor 10 is turned off.
  • the rotation speed of the condensation fan 80 is adjusted, so that the condensation fan 80 continues to operate for a period of time at a second rotation speed lower than the first rotation speed to accelerate the flow of air above the evaporation tray 90, and the evaporation tray 90 is raised.
  • the evaporation capacity of water when the refrigerator is cooled, the compressor 10 is turned on, and the controller 130 controls the condensation fan 80 to operate at the first rotation speed to ensure the heat dissipation of the condenser 20; when the temperature of the storage compartment reaches the set temperature, it is not required.
  • the compressor 10 is turned off.
  • the rotation speed of the condensation fan 80 is adjusted, so that the condensation fan 80 continues to operate for a period of
  • the condensing blower 80 is only rotated during the operation of the compressor 10 for ensuring heat dissipation of the condenser 20, and the condensing blower 80 is stopped while the compressor 10 is shut down.
  • the controller 130 controls the condensation fan 80 to still operate at a relatively low rotational speed for a period of time, thereby improving the evaporation ability of the water in the evaporating dish 90 and ensuring the water in the evaporating dish 90. Will not overflow.
  • the second rotational speed is less than the first rotational speed.
  • the second rotational speed may be 50% to 80% of the first rotational speed, and the condensation blower 80 operates at the second rotational speed to accelerate evaporation of water in the evaporating dish 90, and the noise is relatively low.
  • the refrigerator can retain the heating coil 100 disposed in the evaporating dish 90.
  • the high temperature refrigerant gas flowing through the heating coil 100 heats the water, and the condensing fan 80 is accelerating. While the condenser 20 dissipates heat, the evaporation of water in the evaporating dish 90 is accelerated. After the refrigerator is stopped from cooling (compressor 10 is turned off), the operation of the condenser fan 80 increases the evaporation rate of water in the evaporating dish 90.
  • the heating coil 100 of the refrigerator is eliminated, and after the refrigerator is stopped, the operation of the condenser fan 80 increases the evaporation rate of water in the evaporating dish 90.
  • the refrigerator may further include a humidity sensor 110 configured to detect the external environment humidity where the refrigerator is located, and the controller 130 is further configured to determine the preset time according to the external environment humidity, that is, determine the condensation fan 80 to The time when the second speed is running.
  • the controller 130 is configured to control the condensation fan 80 to operate at the second rotation speed for a first preset time when the external environment humidity is less than the first preset environmental humidity value; the external environment humidity is greater than the first
  • the control condensation fan 80 is operated at the second rotation speed for a second preset time; when the external environment humidity is greater than the second preset ambient humidity, the condensation fan 80 is controlled to be the second The speed runs for the third preset time.
  • the first preset time is less than the second preset time
  • the second preset time is less than the third preset time.
  • the higher the humidity of the external environment in which the refrigerator is located, the slower the evaporation rate of the water, and the preset time for the operation of the condensing fan 80 at the second speed according to the humidity of the external environment can be reasonably determined that the condenser 10 is closed after the compressor 10 is stopped.
  • the time during which the condensation fan 80 is operated at the second rotation speed is too short to evaporate the water in the evaporating dish 90 in time, and the condensation fan 80 is prevented from operating at the second rotation speed for a long time to increase the power consumption.
  • a reasonable time for the condensing fan 80 to operate at the second rotational speed is determined, so that the water in the evaporating dish 90 is sufficiently and timely evaporated to prevent the water in the evaporating dish 90 from overflowing.
  • the first preset ambient humidity value may be set to 50% relative humidity
  • the second preset ambient humidity may be set to 75% relative humidity
  • the first preset time may be set to 10 minutes
  • the second preset time It can be set to 20 minutes
  • the third preset time can be set to 30 minutes.
  • the specific values of the above parameters are all examples. In the implementation, the above parameters can be flexibly adjusted according to the specific application environment and usage requirements.
  • the controller 130 may be further configured to acquire a defrosting time point of the refrigerator before the current time, calculate an average time of the refrigerator defrosting time interval, and determine according to an average time of the refrigerator defrosting time interval.
  • the controller 130 is configured to control the condensation fan 80 to operate at the second rotation speed for a fourth preset time when the average time of the refrigerator defrost time interval is greater than the first preset average time;
  • the control condensation fan 80 is operated at the second rotation speed for a fifth preset time; the average time of the refrigerator defrost time interval is less than or equal to
  • the condensing fan 80 is controlled to operate at the second rotational speed for a sixth predetermined time.
  • the fourth preset time is less than the fifth preset time
  • the fifth preset time is less than the sixth preset time.
  • the average time of the refrigerator defrosting time interval refers to the average time of multiple defrosting intervals before the current time, for example, calculating the average time of the first three defrosting intervals, and determining that the condensing fan 80 is operated at the second rotating speed according to the length of the time. Preset time. The shorter the interval between the defrosting of the refrigerator, the greater the amount of defrosting water flowing into the evaporating dish 90, and the higher the risk of overflow of the water level in the evaporating dish 90.
  • the preset time of the condensing fan 80 running at the second speed is determined, and the continuous running time of the condensing fan 80 after the compressor 10 is stopped can be reasonably determined, and the time for the condensing fan 80 to operate at the second speed is avoided. Too short to evaporate the water in the evaporating dish 90 in time, while avoiding the condensing fan 80 operating at a second rotational speed for an excessively long period of time to increase power consumption.
  • the first preset average time can be set to 40 hours
  • the second preset average time can be set to 20 hours
  • the fourth preset time can be set to 10 minutes
  • the fifth preset time can be set to 20 minutes.
  • the fifth preset time can be set to 30 minutes.
  • the specific values of the above parameters are all examples. In the implementation, the above parameters can be flexibly adjusted according to the specific application environment and usage requirements.
  • the controller 130 may be configured to determine the preset time based on the average ambient humidity and the average time of the refrigerator defrost time interval. Specifically, the controller 130 may compare the preset time determined according to the external environment humidity with a preset time determined according to the average time of the refrigerator defrosting time interval, when the preset time is determined according to the external environment humidity, and according to the refrigerator defrosting The averaging time of the time interval determines that the preset time is different, and the determined larger preset time is taken as the time at which the condensing fan 80 operates at the second speed. This makes it more reasonable to determine the time at which the condensing fan 80 continues to operate at the second speed after the compressor 10 is shut down.
  • FIG 3 is a schematic structural view of a refrigerator in accordance with still another embodiment of the present invention, in which the refrigerator may include a water level sensor 120 configured to detect the water level in the evaporating dish 90 in real time.
  • the controller 130 is configured to determine a preset time based on the water level in the evaporating dish 90. Specifically, a low water level line and a high water level line are presetly set, and the controller 130 is configured to control the condensing fan 80 to operate at the second speed when the water level in the evaporating dish 90 is lower than the preset low water level line.
  • the condensing fan 80 When the water level in the evaporating dish 90 is lower than the preset low water level line, it is confirmed as a safe water level, and when the compressor 10 is stopped, the condensing fan 80 continues to run at the second rotating speed for a seventh preset time and stops, for example, after running for 10 minutes. Stopping, since the water level in the evaporating dish 90 is at a safe water level, the time during which the condensing fan 80 is operated at the second rotational speed can be appropriately shortened.
  • the condensing fan 80 continues to operate at the second speed for the eighth preset time and then stops. For example, after the operation is stopped for 20 minutes, since the water level in the evaporating dish 90 is in a state of a normal water level, the time during which the condensation fan 80 is operated at the second rotation speed can be appropriately increased. When the water level in the evaporating dish 90 exceeds the preset high water level line, it is confirmed as the warning water level.
  • the condensing fan 80 stops after the ninth preset time continues to run at the second rotation speed, for example, stops after 30 minutes of operation. Since the water level in the evaporating dish 90 is at the warning water level, the time during which the condensing fan 80 is operated at the second rotating speed should be increased to accelerate the evaporation of water in the evaporating dish 90 to prevent the water from overflowing.
  • the controller 130 may be further configured to increase the preset time when the water level in the evaporating dish 90 is gradually increased; when the water level is gradually decreased in the evaporating dish 90, the preset time is decreased to The time during which the condenser 20 is operated at the second rotational speed is dynamically adjusted, thereby determining a more suitable time for the condenser 20 to continue to operate according to the actual change of the water level, and avoiding the condenser while ensuring timely evaporation of water in the evaporating dish 90. 20
  • the present invention further provides a control method for improving the evaporation capacity of the refrigerator.
  • the control method includes:
  • the compressor 10 When the refrigerator is cooled, the compressor 10 is turned on, and the condensing fan 80 is operated at the first rotational speed to ensure heat dissipation of the condenser 20.
  • the condensation fan 80 is operated for a preset time at a second rotation speed lower than the first rotation speed to increase the evaporation capacity of the evaporating dish 90.
  • the refrigerator 10 After the storage compartment of the refrigerator is lowered to a certain temperature, the refrigerator 10 is turned off when the refrigerator does not need to be re-cooled, and the condensation fan 80 is adjusted to operate at a second rotation speed lower than the first rotation speed for a certain period of time (preset time). Stop again to accelerate the flow of air above the evaporating dish 90, increasing the evaporation capacity of the water in the evaporating dish 90.
  • the condensing blower 80 is only rotated during the operation of the compressor 10 for ensuring heat dissipation of the condenser 20, and the condensing blower 80 is stopped while the compressor 10 is shut down.
  • the condensation fan 80 is still operated at a relatively low rotational speed for a period of time to increase the evaporation ability of the water in the evaporating dish 90, and to ensure that the water in the evaporating dish 90 does not overflow.
  • the second rotational speed is less than the first rotational speed.
  • the second rotational speed may be 50% to 80% of the first rotational speed, and the condensation blower 80 operates at the second rotational speed to accelerate evaporation of water in the evaporating dish 90, and the noise is relatively low.
  • the preset time at which the condensing blower 80 operates at the second rotational speed may be determined based on the ambient humidity of the refrigerator in which it is located and/or determined based on the average time of the refrigerator defrosting time interval and/or based on the water level in the evaporating dish 90.
  • the preset time at which the condensing blower 80 is operated at the second rotational speed may be determined according to any one of the above three or determined according to any two of the above three or determined according to three of the above three.
  • the preset time for the condensing fan 80 to operate at the second speed is determined according to any two of the above, if any two determined preset times are different, the determined larger preset time is taken as the condensing fan 80. The time at which the second speed is run.
  • the preset time for the condensing fan 80 to operate at the second rotational speed is determined according to three of the above three, if any two or three of the three determined preset times are different, the determined maximum The preset time is the time during which the condensing blower 80 is operated at the second rotational speed. This makes it more reasonable to determine the time at which the condensing fan 80 continues to operate at the second speed after the compressor 10 is shut down.
  • the preset time at which the condensation fan 80 operates at the second rotational speed is determined according to the external environmental humidity in which the refrigerator is located. Since the humidity of the external environment where the refrigerator is located is higher, the evaporation speed of the water is slower, and the preset time of the operation of the condensation fan 80 at the second rotation speed is determined according to the humidity of the external environment, and the condensation fan can be reasonably determined after the compressor 10 is stopped.
  • the time for the condensation fan 80 to operate at the second rotation speed is too short to evaporate the water in the evaporating dish 90 in time, and the condensation fan 80 is prevented from operating at the second rotation speed for a long time to increase the power consumption.
  • a reasonable time for the condensing fan 80 to operate at the second rotational speed is determined, so that the water in the evaporating dish 90 is sufficiently and timely evaporated to prevent the water in the evaporating dish 90 from overflowing.
  • the step of determining the preset time according to the humidity of the external environment where the refrigerator is located specifically includes:
  • the condensation fan 80 is operated at the second rotation speed for the first preset time
  • the condensation fan 80 operates at the second rotational speed for a second preset time
  • the condensing fan 80 operates at the second speed for a third predetermined time.
  • the first preset time is less than the second preset time, and the second preset time is less than the third preset time.
  • the first preset ambient humidity value may be set to 50% relative humidity
  • the second preset ambient humidity may be set to 75% relative humidity
  • the first preset time may be set to 10 minutes
  • the second preset time It can be set to 20 minutes
  • the third preset time can be set to 30 minutes.
  • the specific values of the above parameters are all examples. In the implementation, the above parameters can be flexibly adjusted according to the specific application environment and usage requirements.
  • the preset time at which the condensing blower 80 operates at the second rotational speed is determined according to the average time of the refrigerator defrosting time interval. The shorter the interval between the defrosting of the refrigerator, the greater the amount of defrosting water flowing into the evaporating dish 90, and the higher the risk of overflow of the water level in the evaporating dish 90. According to the average time of the refrigerator defrosting interval, the preset time of the condensing fan 80 running at the second speed is determined, and the continuous running time of the condensing fan 80 after the compressor 10 is stopped can be reasonably determined, and the time for the condensing fan 80 to operate at the second speed is avoided.
  • a reasonable time for the condensing fan 80 to operate at the second rotational speed is determined, so that the water in the evaporating dish 90 is sufficiently and timely evaporated to avoid excessive overflow of the water in the evaporating dish 90, and at the same time, the condensing fan 80 can be avoided.
  • the second rotational speed is too long to increase the power consumption.
  • the step of determining the preset time according to the average time of the refrigerator defrosting time interval specifically includes:
  • the condensation fan 80 operates at the second rotation speed for a fourth preset time
  • the condensation fan 80 is operated at the second rotation speed for a fifth preset time
  • the condensation fan 80 operates at the second speed for a sixth predetermined time.
  • the fourth preset time is less than the fifth preset time, and the fifth preset time is less than the sixth preset time.
  • the average time of the refrigerator defrosting time interval refers to the average time of multiple defrosting intervals before the current time, for example, calculating the average time of the first three defrosting intervals, and determining that the condensing fan 80 is operated at the second rotating speed according to the length of the time. Preset time.
  • the first preset average time can be set to 40 hours
  • the second preset average time can be set to 20 hours
  • the fourth preset time can be set to 10 minutes
  • the fifth preset time can be set to 20 minutes.
  • the fifth preset time can be set to 30 minutes.
  • the specific values of the above parameters are all examples. In the implementation, the above parameters can be flexibly adjusted according to the specific application environment and usage requirements.
  • the preset time for the operation of the condensing fan 80 to operate at the second speed is determined according to the water level in the evaporating dish 90.
  • the step of determining the preset time according to the water level in the evaporating dish 90 specifically includes:
  • the condensation fan 80 operates at the second rotation speed for a seventh preset time
  • the condensation fan 80 is operated at the second speed for the eighth predetermined time
  • the condensing fan 80 operates at the second rotational speed for the ninth predetermined time.
  • the seventh preset time is less than the eighth preset time, and the eighth preset time is less than the ninth preset time.
  • the condensing fan 80 When the water level in the evaporating dish 90 is lower than the preset low water level line, it is confirmed as a safe water level, and when the compressor 10 is stopped, the condensing fan 80 continues to run at the second rotating speed for a seventh preset time and stops, for example, after running for 10 minutes. Stopping, since the water level in the evaporating dish 90 is at a safe water level, the time during which the condensing fan 80 is operated at the second rotational speed can be appropriately shortened.
  • the condensing fan 80 continues to operate at the second speed for the eighth preset time and then stops. For example, after the operation is stopped for 20 minutes, since the water level in the evaporating dish 90 is in a state of a normal water level, the time during which the condensation fan 80 is operated at the second rotation speed can be appropriately increased. When the water level in the evaporating dish 90 exceeds the preset high water level line, it is confirmed as the warning water level.
  • the condensing fan 80 stops after the ninth preset time continues to run at the second rotation speed, for example, stops after 30 minutes of operation. Since the water level in the evaporating dish 90 is at the warning water level, the time during which the condensing fan 80 is operated at the second rotating speed should be increased to accelerate the evaporation of water in the evaporating dish 90 to prevent the water from overflowing.
  • the preset time for the operation of the condensing fan 80 to operate at the second speed is determined according to the water level in the evaporating dish 90.
  • the step of determining the preset time according to the water level in the evaporating dish 90 specifically includes:
  • the time during which the condenser 20 is operated at the second rotational speed is dynamically adjusted according to the change trend of the water level in the evaporating dish 90, thereby determining the more suitable time for the condenser 20 to continue to operate according to the actual change of the water level, in ensuring the evaporating dish 90. While the water evaporates in time, various problems caused by the condenser 20 running at the second rotational speed for too long or too short are avoided.
  • control method for improving the evaporation capacity of the refrigerator of the present invention three specific embodiments of the control method for improving the evaporation capacity of the refrigerator of the present invention are exemplified below.
  • FIG. 5 is a flowchart of a method for controlling an evaporation capacity of a refrigerator according to Embodiment 1 of the present invention. As shown in FIG. 5, the control method includes:
  • step S502 it is determined whether the compressor 10 is powered on, and if so, step S504 is performed, and if not, step S506 is performed;
  • the condensation fan 80 operates at a first speed
  • step S506 detecting the external environment humidity ⁇ where the refrigerator is located, if the external environment humidity ⁇ 50%RH, step S508 is performed; if the external environment humidity is 50%RH ⁇ 75% RH, step S510 is performed; if the external environment humidity is ⁇ 75 %RH, step S512 is performed;
  • the condensation fan 80 is operated at the second rotation speed for 20 minutes;
  • the condensing blower 80 is operated at the second rotational speed for 30 minutes.
  • RH represents relative humidity
  • control method includes:
  • step S602 it is determined whether the compressor 10 is powered on, and if so, step S604 is performed, and if not, step S606 is performed;
  • the condensation fan 80 operates at the first speed
  • step S606 obtaining the first three defrosting time points of the refrigerator before the current time, and calculating an average time T of the three defrosting time intervals. If T ⁇ 40 hours, step S608 is performed; if 20 hours ⁇ T ⁇ 40 hours, performing Step S610; if T ⁇ 20 hours, step S612 is performed;
  • the condensation fan 80 is operated at the second rotation speed for 20 minutes;
  • the condensing fan 80 is operated at the second rotational speed for 30 minutes.
  • control method includes:
  • step S702 it is determined whether the compressor 10 is powered on, and if so, step S704 is performed, and if not, step S706 is performed;
  • the condensation fan 80 operates at the first rotation speed
  • the water level in evaporation tray 90 detects L, when the boat 90 is low level L below a predetermined low level L (L ⁇ L low), step S708; if the boat 90 at a predetermined low level L between the water line and the line L high preset high water level (L high low ⁇ L ⁇ L), step S710; if the level L of the boat 90 is above a preset high water level (L> L high), performs step S712 ;
  • the condensation fan 80 is operated at the second rotation speed for 20 minutes;
  • the condensing blower 80 is operated at the second rotational speed for 30 minutes.
  • the condensing fan 80 is still running, and continues to run for a period of time at a speed lower than the normal operation of the condensing fan 80, and then stops, and the rotation of the condensing fan 80 is increased.
  • the air flowing above the evaporating dish 90 increases the evaporation capacity of the evaporating dish 90, ensuring that the defrosting water does not overflow.
  • the heating coil 100 is disposed in the evaporating dish 90, and the water in the evaporating dish 90 is heated by the heating tube.
  • the heating coil 100 generally uses a copper tube or a steel tube with strong corrosion resistance, and the surface
  • the heat exchange amount of the finite length heating coil 100 is small, and the evaporation speed is difficult to meet the use requirements.
  • the condensation fan 80 continues to run at the second rotation speed for a period of time, and the evaporation speed of the water is added, and the heating coil 100 is not disposed in the evaporation tray 90, so that the evaporation demand can be satisfied. While ensuring that the water in the evaporating dish 90 does not overflow, the above problems caused by arranging the heating coil 100 in the evaporating dish 90 are avoided.
  • the running time of the condensation fan 80 is determined according to the external environment humidity, and/or determined according to the average time of the refrigerator defrosting time interval, and/or according to the evaporating dish 90
  • the water level is determined, whereby the appropriate time for the condensing fan 80 to operate at the second speed can be determined, and the power consumption of the condensing fan 80 can be reduced while increasing the evaporation capacity and ensuring that the defrosting water does not overflow.

Abstract

L'invention concerne un procédé de commande permettant d'améliorer la capacité d'évaporation d'un réfrigérateur, et le réfrigérateur. Le réfrigérateur comprend un compresseur (10), un ventilateur de condensat (80) relié au compresseur (10) et utilisé pour accélérer la dissipation de chaleur d'un condenseur (20), et un bac d'évaporation (90) disposé au-dessous du condenseur (20). Le procédé de commande comprend les étapes suivantes : lorsque le compresseur (10) est démarré, le ventilateur de condensat (80) fonctionne à une première vitesse de rotation; et lorsque le compresseur est arrêté, le ventilateur de condensat (80) fonctionne pendant une période de temps prédéfinie à une seconde vitesse de rotation inférieure à la première vitesse de rotation, de telle sorte que la capacité d'évaporation du bac d'évaporation (90) soit améliorée. Après que le compresseur (10) est arrêté, le ventilateur de condensat (80) fonctionne encore et s'arrête après avoir fonctionné pendant une période de temps à faible vitesse, et un flux d'air au-dessus du bac d'évaporation (90) est accéléré au moyen de la rotation du ventilateur de condensat (80), de sorte que la capacité d'évaporation de l'eau dans le bac d'évaporation (90) soit améliorée, et il est garanti que l'eau dans le bac d'évaporation (90) ne déborde pas. De plus, une bobine de chauffage (100) n'est pas nécessaire, et ainsi, les séries de problèmes provoquées par la bobine de chauffage (100) sont évitées.
PCT/CN2018/125057 2017-12-29 2018-12-28 Procédé de commande permettant l'amélioration de la capacité d'évaporation de réfrigérateur et réfrigérateur WO2019129243A1 (fr)

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DE102018218019A1 (de) * 2018-10-22 2020-04-23 BSH Hausgeräte GmbH Verdunstungsanordnung für ein Kältegerät
CN112484373B (zh) * 2020-11-30 2022-02-22 青岛海尔电冰箱有限公司 用于冰箱的蓄水散热装置和冰箱
CN113915817A (zh) * 2021-01-04 2022-01-11 海信（山东）冰箱有限公司 冰箱
CN117387261A (zh) * 2022-07-04 2024-01-12 青岛海尔电冰箱有限公司 制冷设备及其控制方法

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