WO2019128945A1 - Réfrigérateur et son procédé de commande de dégivrage - Google Patents

Réfrigérateur et son procédé de commande de dégivrage Download PDF

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Publication number
WO2019128945A1
WO2019128945A1 PCT/CN2018/123268 CN2018123268W WO2019128945A1 WO 2019128945 A1 WO2019128945 A1 WO 2019128945A1 CN 2018123268 W CN2018123268 W CN 2018123268W WO 2019128945 A1 WO2019128945 A1 WO 2019128945A1
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Prior art keywords
refrigerator
defrosting
evaporator
electromagnetic
power
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PCT/CN2018/123268
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English (en)
Chinese (zh)
Inventor
苗建林
李登强
李春阳
费斌
Original Assignee
青岛海尔股份有限公司
青岛海尔特种制冷电器有限公司
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Application filed by 青岛海尔股份有限公司, 青岛海尔特种制冷电器有限公司 filed Critical 青岛海尔股份有限公司
Publication of WO2019128945A1 publication Critical patent/WO2019128945A1/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
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles

Definitions

  • the invention relates to a refrigerating and freezing device, in particular to a refrigerator and a defrosting control method thereof.
  • the existing refrigerator is provided with a defrosting heating wire near the evaporator. After the heating wire is energized, the evaporator is heated by heat radiation to achieve the purpose of defrosting.
  • the temperature of the evaporator is higher near the position of the heating wire, the defrosting speed is fast, and the defrosting speed away from the heating wire is slow, so that the defrosting of the evaporator is easy to be uneven.
  • the electric heating defrosting will simultaneously heat the air around the evaporator, which will not only cause thermal energy loss, but also prolong the defrosting time.
  • the current defrosting method used in the refrigerator is to set a preset time according to the empirical data, and after the refrigerator is cooled for a certain period of time, the defrosting is automatically turned on, and the defrosting is stopped after a certain time of defrosting.
  • this method of setting the defrost start point and the end point by experience is not effective because the frosting/defrosting condition cannot be clarified.
  • the defrosting is stopped, which may result in insufficient defrosting, thereby affecting the subsequent cooling effect of the evaporator; if frosting on the evaporator It has been completely eliminated, but the heating wire has not stopped heating, which will cause energy waste and affect the service life of the defrosting device.
  • the present invention has been made in order to provide a refrigerator and a defrosting control method thereof that overcome the above problems or at least partially solve the above problems.
  • An object of the present invention is to improve the defrosting effect of a refrigerator.
  • Another object of the present invention is to accurately determine the end time point of the defrosting process.
  • the present invention provides a defrosting control method for a refrigerator, the refrigerator comprising an electromagnetic defrosting device for electromagnetic defrosting of an evaporator of the refrigerator, the method comprising: detecting that the refrigerator reaches during the cooling operation of the refrigerator Defrosting condition; turning on the electromagnetic defrosting device to start defrosting, and continuously detecting the surface temperature of the evaporator of the refrigerator and the power of the electromagnetic defrosting device; determining whether the surface temperature of the evaporator reaches a preset temperature, and the power of the electromagnetic defrosting device The threshold power is reached; if so, the electromagnetic defrosting device is turned off to end the defrosting.
  • the method before the step of detecting that the refrigerator reaches the defrosting condition, the method further includes: determining a threshold power of the electromagnetic defrosting device when the refrigerator is powered on for the first time.
  • the step of determining the threshold power of the electromagnetic defrosting device comprises: detecting a surface temperature of the evaporator; determining whether the surface temperature of the evaporator reaches a preset temperature; and if so, turning on the electromagnetic defrosting device And continuously running the first preset time period; during the continuous operation of the electromagnetic defrosting device, calculating the average power in the last second preset time period as the threshold power.
  • the step of detecting that the refrigerator reaches the defrosting condition comprises: recording a continuous running time of the refrigerator and a cumulative opening time of the door body of the refrigerator during the continuous running time; determining whether the continuous running time of the refrigerator reaches a preset cumulative running time, and The cumulative number of opening of the door exceeds the preset number; if so, it is determined that the refrigerator reaches the defrosting condition.
  • the method further comprises: turning off the compressor of the refrigerator to suspend cooling of the refrigerator.
  • the present invention provides a refrigerator comprising: a refrigeration cycle system comprising a compressor, an evaporator and a condenser; an electromagnetic defrosting device disposed toward the evaporator and configured to be heated by radiating electromagnetic waves to the evaporator An evaporator for defrosting the evaporator; a temperature detecting device disposed on the surface of the evaporator configured to detect a surface temperature of the evaporator; and a power detecting device electrically connected to the electromagnetic defrosting device and configured to detect the electromagnetic defrosting device Operating power; wherein the electromagnetic defrosting device is configured to be turned on during the cooling operation of the refrigerator, to detect that the refrigerator reaches the defrosting condition, to start defrosting; and is further configured to reach a preset temperature at the surface temperature of the evaporator, When the power of the electromagnetic defrosting device reaches the threshold power, it is turned off, and the defrosting is ended.
  • a refrigeration cycle system comprising a compressor, an evaporator and a con
  • the power detecting device is further configured to determine a threshold power of the electromagnetic defrosting device when the refrigerator is first powered on.
  • the electromagnetic defrosting device is further configured to open and continue to operate for a first preset time period when the surface temperature of the evaporator reaches a preset temperature when the refrigerator is first powered on; the power detecting device is further configured During the continuous operation of the electromagnetic defrosting device, the average power during the last second predetermined time period is calculated as the threshold power.
  • the refrigerator further includes: a running time detecting device configured to record the continuous running time of the refrigerator; and a door opening and closing detecting device disposed on the door body or the box body of the refrigerator, configured to be in a continuous running time of the refrigerator The number of times the door body is opened is recorded; wherein the electromagnetic defrosting device is configured to be turned on when the continuous running time of the refrigerator reaches a preset cumulative running time, and the cumulative opening number of the door body exceeds a preset number of times.
  • a running time detecting device configured to record the continuous running time of the refrigerator
  • a door opening and closing detecting device disposed on the door body or the box body of the refrigerator, configured to be in a continuous running time of the refrigerator The number of times the door body is opened is recorded; wherein the electromagnetic defrosting device is configured to be turned on when the continuous running time of the refrigerator reaches a preset cumulative running time, and the cumulative opening number of the door body exceeds a preset number of times.
  • the compressor is further configured to close before opening the electromagnetic defrosting device to suspend refrigeration of the refrigerator.
  • the present invention provides a refrigerator.
  • the refrigerator of the invention defrosses the evaporator by using an electromagnetic defrosting device, and the electromagnetic defrosting device heats the evaporator by using the principle of magnetic field induced eddy current heating, and the defrosting effect is compared with the heating wire used in the prior art.
  • the electromagnetic defrosting device can uniformly emit electromagnetic radiation to various portions of the evaporator, so that the entire evaporator can be uniformly heated, and the defrosting of each part of the evaporator is more uniform.
  • the electromagnetic defrosting device since only metal can accept electromagnetic waves and convert magnetic energy into heat, the electromagnetic defrosting device only heats the surface of the evaporator without heating the air around the evaporator. Therefore, the defrosting of the refrigerator of the present embodiment is more direct and rapid, and at the same time, heating of the position other than the frosting is avoided, and the heat utilization efficiency is improved.
  • the present invention also provides a defrosting control method.
  • the method further detects the power of the electromagnetic defrosting device based on the temperature of the evaporator.
  • the operating power of the electromagnetic defrosting device changes according to the degree of frosting of the evaporator, that is, the working power of the electromagnetic defrosting device has a certain correspondence with the degree of frosting, when the surface temperature of the evaporator is 0 ° C
  • the power of the electromagnetic defrosting device is a certain power value, that is, the threshold power.
  • the combination of the evaporator surface temperature and the operating power of the electromagnetic defrosting device determines the defrosting end time point, and it is possible to more accurately determine when the defrosting is ended. Preventing defrosting of the evaporator is insufficient and affecting subsequent cooling of the evaporator.
  • FIG. 1 is a schematic view of a refrigerator in accordance with one embodiment of the present invention.
  • FIG. 2 is a schematic block diagram of a refrigerator in accordance with one embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a defrosting control method of a refrigerator according to an embodiment of the present invention.
  • FIG. 4 is a flow chart of a defrosting control method of a refrigerator in accordance with one embodiment of the present invention.
  • an embodiment of the present invention first provides a refrigerator 1.
  • the refrigerator is an air-cooled refrigerator
  • the air-cooled refrigerator includes a door body, a box body, and a refrigeration cycle system composed of the compressor 100, the evaporator 300, and the condenser 200.
  • the interior of the cabinet forms a storage compartment and a supply duct at the rear of the storage compartment.
  • the evaporator 300 is disposed in the air supply duct.
  • the outer casing of the evaporator 300 is made of a metal material, and the interior thereof is formed.
  • the refrigerant flows through the pipes and cools the air inside the ducts through the refrigerant flowing inside.
  • a fan is disposed inside the air supply duct, and the fan is used to transport dry and cool air cooled by the evaporator 300 in the air duct to the storage room to cool the storage room.
  • the air entering the storage room will circulate again into the air duct.
  • the interior of the air-cooled refrigerator is cooled by the above-described air flow circulation principle.
  • the refrigerator of this embodiment further includes an electromagnetic defrosting device 400.
  • the electromagnetic defrosting device 400 is disposed in the air duct and disposed toward the evaporator 300, and is configured to heat the evaporator 300 by radiating electromagnetic waves to the evaporator 300 to defrost the evaporator 300.
  • the electromagnetic defrosting device 400 heats the evaporator 300 by using a magnetic field induced eddy current heating principle, and is internally provided with an electromagnetic coil, and uses a current to generate a magnetic field through the coil. When the magnetic force in the magnetic field passes through the evaporator 300, it is evaporated.
  • the surface of the casing 300 generates a myriad of small eddy currents, causing the metal ions in the casing of the evaporator 300 to move at a high speed, and the temperature of the evaporator 300 rises rapidly.
  • the electromagnetic defrosting device 400 converts magnetic energy by electric energy, and the magnetic energy converts heat energy to quickly heat the evaporator 300 itself, and the evaporator 300 directly melts the frost after heating.
  • the refrigerator of the present embodiment defrosses the evaporator 300 by the electromagnetic defrosting device 400, and the defrosting effect is better by using the heating wire for defrosting compared with the prior art.
  • the electromagnetic defrosting device 400 can uniformly emit electromagnetic radiation to various portions of the evaporator 300, and the evaporator 300 as a whole can uniformly heat up, so that the defrosting of each portion of the evaporator 300 is more uniform.
  • the electromagnetic defrosting device 400 since only metal can receive electromagnetic waves and convert magnetic energy into heat, the electromagnetic defrosting device 400 only heats the surface of the evaporator 300 without heating the air around the evaporator 300. Therefore, the defrosting of the refrigerator of the present embodiment is more direct and rapid, and at the same time, heating of the position other than the frosting is avoided, and the heat utilization efficiency is improved.
  • the electromagnetic defrosting device 400 has a built-in frosting degree detecting module and a power adjusting module.
  • the frosting degree detecting module comprehensively judges the evaporator 300 by detecting the surface temperature of the evaporator 300 and/or detecting the frosting thickness of the surface of the evaporator 300 and combining other factors.
  • the power adjustment module changes the operating power of the electromagnetic defrosting device 400 according to the above determined degree of frosting to adapt to different working environments. In general, when the degree of frosting is high (expressed in the evaporator 300 is thicker and its surface temperature is lower), the electromagnetic defrosting device 400 operates at a low power; when the degree of frosting is low (expressed in evaporation) The device 300 is thinner in frost and has a higher surface temperature. The electromagnetic defrosting device 400 operates at high power.
  • the refrigerator of this embodiment further includes: a temperature detecting device 310 and a power detecting device 410.
  • the temperature detecting device 310 is disposed on the surface of the evaporator 300 and configured to detect the surface temperature of the evaporator 300.
  • the temperature detecting device 310 can be a temperature sensor.
  • the temperature sensor is electrically connected to the electromagnetic defrosting device 400, and the electromagnetic defrosting device 400 is capable of receiving temperature data detected by the temperature sensor.
  • the power detecting device 410 is electrically coupled to the electromagnetic defrosting device 400 and configured to detect the operating power of the electromagnetic defrosting device 400.
  • the power detecting device 410 can be disposed on the main control board of the refrigerator, and the power detecting device 410 calculates the electromagnetic defrosting device by detecting data such as the voltage across the electromagnetic defrosting device 400 and the current through the electromagnetic defrosting device 400. Instant power of 400.
  • the electromagnetic defrosting device 400 is configured to be turned on when the refrigerator is detected to reach the defrosting condition during the cooling operation of the refrigerator to start defrosting; and is further configured to reach a preset temperature at the surface temperature of the evaporator 300 and to be electromagnetically When the power of the frost device 400 reaches the threshold power, it is turned off, and the defrosting is ended.
  • the above preset temperature is 0 ° C, that is, the freezing point temperature.
  • the power detecting device 410 further detects the power of the electromagnetic defrosting device 400.
  • the operating power of the electromagnetic defrosting device 400 varies according to the degree of frosting of the evaporator 300, that is, the operating power of the electromagnetic defrosting device 400 has a certain correspondence with the degree of frosting, and the threshold power represents the evaporator.
  • the surface temperature of the evaporator 300 and the operating power of the electromagnetic defrosting device 400 are combined to determine the defrosting end time point, and it is possible to more accurately determine when the defrosting is ended.
  • the defrosting of the evaporator 300 is prevented from being insufficient, which affects the subsequent cooling of the evaporator 300.
  • the power detection device 410 is also configured to determine the threshold power of the electromagnetic defrosting device 400 when the refrigerator is first powered up.
  • the above threshold power represents the power value that the power adjustment module can achieve when the frost is removed during the defrosting of the refrigerator.
  • the electromagnetic defrosting device 400 is further configured to open and continue to operate for a first predetermined period of time when the surface temperature of the evaporator 300 reaches a preset temperature when the refrigerator is first powered on.
  • the power detecting device 410 also calculates the average power during the last second predetermined period of time as the threshold power during the continuous operation of the electromagnetic defrosting device 400.
  • the preset temperature is 0 ° C
  • the first preset time period is 30 s
  • the second preset time period is 5 s.
  • the electromagnetic defrosting device 400 When the temperature of the evaporator 300 is lowered to 0 ° C, the surface thereof begins to frost, at which time the electromagnetic defrosting device 400 is turned on, and the electromagnetic defrosting device 400 is controlled to continue to operate for 30 s.
  • the electromagnetic defrosting device 400 When the electromagnetic defrosting device 400 is just turned on, its power value may fluctuate somewhat, and after the power of the electromagnetic defrosting device 400 tends to be stable, its power value is recorded.
  • the power detecting device 410 detects the average power value of the last 5 seconds within 30 s of the operation of the electromagnetic defrosting device 400.
  • the above average power value is the power value corresponding to the electromagnetic defrosting device 400 when the surface of the evaporator 300 is 0 ° C and there is no frost, that is, the threshold power.
  • the refrigerator further includes a running time detecting device 520 and a door opening and closing detecting device 510.
  • the runtime detecting means 520 is configured to record the continuous running time of the refrigerator.
  • the running time detecting device 520 may be a timing device disposed on the main control board of the refrigerator.
  • the door opening and closing detecting device 510 is disposed on the door body or the cabinet of the refrigerator, and is configured to record the number of opening of the door body during the continuous operation of the refrigerator.
  • the door opening and closing detecting device 510 includes a pressure sensor disposed on the door body or the casing and a counter, and the pressure sensor determines whether the door body is opened by sensing the pressure on the door body or the casing, and the counter Accumulate the number of opening times of the door.
  • the electromagnetic defrosting device 400 is configured to be turned on when the continuous running time of the refrigerator reaches a preset cumulative running time, and the cumulative opening number of the door exceeds a preset number of times.
  • the degree of frost on the surface of the evaporator 300 is related to the cumulative running time of the refrigerator and the cumulative number of open doors of the refrigerator. The longer the running time of the refrigerator, the lower the temperature of the evaporator 300, the easier it is to frost.
  • each time the user opens the door the moisture of the external environment of the refrigerator enters the air duct, and it is easy to form frost on the surface of the evaporator 300. The more the cumulative opening of the door body, the more easily the evaporator 300 is frosted.
  • the refrigerator when the refrigerator accumulates the cooling operation for M hours and the number of door opening times reaches N times, it is determined that the refrigerator reaches the defrosting condition, and the electromagnetic defrosting device 400 turns on the defrosting.
  • M and N can be set according to the specific model of the refrigerator.
  • the compressor 100 is also configured to close before the electromagnetic defrosting device 400 is turned on to suspend refrigeration of the refrigerator.
  • the compressor 100 is turned off to stop cooling before the refrigerator is ready to start defrosting. After the refrigerator is stopped for a period of time and the temperature of the evaporator 300 is slightly increased, the defrosting process is further entered to prevent the evaporator 300 from suddenly rising in temperature, causing damage to the evaporator 300.
  • FIG. 3 is a schematic diagram of a refrigerator defrosting control method according to an embodiment of the invention, the method generally comprising the following steps:
  • step S302 during the cooling operation of the refrigerator, it is detected that the refrigerator reaches the defrosting condition.
  • the evaporator 300 may have a frosting condition, which affects its operating efficiency. Therefore, the refrigerator needs to perform a defrosting operation on the evaporator 300 after a certain period of cooling.
  • the defrosting condition may be that the surface temperature of the evaporator 300 is lowered to a certain extent, or the number of opening of the refrigerator door body reaches a certain number of times. In other embodiments of the invention, the defrosting condition may also be that the surface of the evaporator 300 is frosted to a certain thickness.
  • step S304 the electromagnetic defrosting device 400 is turned on to start defrosting, and the surface temperature of the evaporator 300 of the refrigerator and the power of the electromagnetic defrosting device 400 are continuously detected.
  • the refrigerator reaches the defrosting condition, it indicates that the refrigerator needs to be defrosted, and at this time, the electromagnetic defrosting device 400 is turned on to start the defrosting process.
  • the surface temperature of the evaporator 300 of the refrigerator and the power of the electromagnetic defrosting device 400 are detected in real time, and the end time point of the defrosting is determined based on the numerical values of the above two data.
  • Step S306 determining whether the surface temperature of the evaporator 300 reaches a preset temperature, and the power of the electromagnetic defrosting device 400 reaches a threshold power to reach a threshold power.
  • the preset temperature is 0 ° C, which is the freezing point temperature.
  • the power detecting device 410 further detects the power of the electromagnetic defrosting device 400.
  • the operating power of the electromagnetic defrosting device 400 varies according to the degree of frosting of the evaporator 300, that is, the operating power of the electromagnetic defrosting device 400 has a certain correspondence with the degree of frosting, and the threshold power represents the evaporator.
  • the surface temperature of the evaporator 300 and the operating power of the electromagnetic defrosting device 400 are combined to determine the defrosting end time point, and it is possible to more accurately determine when the defrosting is ended.
  • the defrosting of the evaporator 300 is prevented from being insufficient, which affects the subsequent cooling of the evaporator 300.
  • the threshold power it is possible to prevent the power of the electromagnetic defrosting device 400 from being excessively large, and it is possible to protect the electromagnetic defrosting device 400 and improve the service life of the electromagnetic defrosting device 400.
  • step S308 if the result of the determination in step S306 is YES, the electromagnetic defrosting device 400 is turned off, and the defrosting is ended.
  • the defrosting process of the refrigerator evaporator 300 is ended, and after waiting for a certain period of time, the refrigerator re-opens the compressor 100 for cooling.
  • FIG. 4 is a flow chart of a method for controlling defrosting of a refrigerator according to an embodiment of the present invention, which performs the following steps in sequence:
  • step S402 the surface temperature of the evaporator 300 is continuously detected when the refrigerator is powered on for the first time.
  • the temperature of the evaporator 300 will gradually decrease from above 0 °C.
  • step S404 it is determined whether the surface temperature of the evaporator 300 reaches a preset temperature.
  • the preset temperature is 0 °C.
  • step S406 if the result of the determination in step S404 is YES, the electromagnetic defrosting device 400 is turned on and continues to operate for 30 s.
  • the temperature of the evaporator 300 is lowered to 0 ° C, the surface thereof begins to frost, at which time the electromagnetic defrosting device 400 is turned on, and the electromagnetic defrosting device 400 is controlled to continue to operate for 30 s.
  • step S408 during the continuous operation of the electromagnetic defrosting device 400, the average power in the last 5 s is calculated as the threshold power.
  • the electromagnetic defrosting device 400 When the electromagnetic defrosting device 400 is just turned on, its power value may fluctuate somewhat, and after the power of the electromagnetic defrosting device 400 tends to be stable, its power value is recorded.
  • the power detecting device 410 detects the average power value of the last 5 seconds within 30 s of the operation of the electromagnetic defrosting device 400.
  • the above average power value is the power value corresponding to the electromagnetic defrosting device 400 when the surface of the evaporator 300 is 0 ° C and there is no frost.
  • step S410 the continuous running time of the refrigerator and the cumulative opening times of the door body of the refrigerator during the continuous running time are recorded.
  • Step S412 determining whether the continuous running time of the refrigerator reaches a preset cumulative running time, and the cumulative opening time of the door body exceeds a preset number of times.
  • the degree of frost on the surface of the evaporator 300 is related to the cumulative running time of the refrigerator and the cumulative number of open doors of the refrigerator. The longer the running time of the refrigerator, the lower the temperature of the evaporator 300, the easier it is to frost.
  • each time the user opens the door the moisture of the external environment of the refrigerator enters the air duct, and it is easy to form frost on the surface of the evaporator 300.
  • the more the cumulative opening of the door body the more easily the evaporator 300 is frosted.
  • the refrigerator starts the defrosting process.
  • step S414 if the result of the determination in step S412 is YES, the electromagnetic defrosting device 400 is turned on to start defrosting, and the surface temperature of the evaporator 300 of the refrigerator and the power of the electromagnetic defrosting device 400 are continuously detected.
  • the refrigerator accumulates the cooling operation for M hours and the number of door opening times reaches N times, it is determined that the refrigerator reaches the defrosting condition, and the electromagnetic defrosting device 400 turns on the defrosting.
  • M and N are set according to the specific conditions of the refrigerator.
  • step S416 it is determined that the surface temperature of the evaporator 300 reaches the preset temperature, and the power of the electromagnetic defrosting device 400 reaches the threshold power.
  • the surface temperature of the evaporator 300 and the power of the electromagnetic defrosting device 400 are continuously monitored to determine the end time point of the defrosting.
  • step S4108 if the result of the determination in step S416 is YES, the electromagnetic defrosting device 400 is turned off, and the defrosting is ended.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Defrosting Systems (AREA)

Abstract

L'invention concerne un réfrigérateur et son procédé de commande de dégivrage. Ledit procédé comprend les étapes consistant à : détecter la température de surface d'un évaporateur (300) et la puissance d'un appareil de dégivrage électromagnétique (400); sur la base de la température de surface et de la puissance, déterminer un point de temps final de dégivrage; la puissance de fonctionnement de l'appareil de dégivrage électromagnétique (400) comporte une certaine relation correspondante avec le degré de givrage; lorsque la température de surface de l'évaporateur (300) est de 0 °C et qu'aucun gel ne s'est accumulé sur l'évaporateur (300), la puissance de l'appareil de dégivrage électromagnétique (400) devient une puissance de seuil; et la puissance de l'appareil de dégivrage électromagnétique (400) s'élevant jusqu'à la puissance de seuil démontre que le givre sur la surface de l'évaporateur (300) a été retiré.
PCT/CN2018/123268 2017-12-27 2018-12-24 Réfrigérateur et son procédé de commande de dégivrage WO2019128945A1 (fr)

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CN108168197B (zh) * 2017-12-27 2020-04-21 青岛海尔股份有限公司 冰箱及其化霜控制方法
CN112797706B (zh) * 2019-11-14 2022-09-23 青岛海尔电冰箱有限公司 一种冰箱及其化霜控制方法
CN112833606B (zh) * 2019-11-25 2022-11-04 青岛海尔电冰箱有限公司 蒸发器组件以及冰箱、冰箱的控制方法
CN110906604B (zh) * 2019-12-13 2021-11-05 广东哈士奇制冷科技股份有限公司 一种具有化霜功能的冰箱
CN111141007B (zh) * 2019-12-30 2021-10-22 宁波奥克斯电气股份有限公司 一种调节空调结霜的控制方法、控制系统及空调
CN113639499A (zh) * 2021-08-05 2021-11-12 珠海格力电器股份有限公司 加热器控制系统、化霜控制方法、制冷系统及冰箱
CN115875926B (zh) * 2021-08-27 2023-12-01 合肥美的电冰箱有限公司 制冷设备及其化霜方法、装置
CN113819641B (zh) * 2021-09-18 2023-11-10 江苏麦赫物联网科技有限公司 结霜化霜传感器、安装结构以及检测控制方法

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