CN113587539B - Defrosting control method and refrigerator - Google Patents

Defrosting control method and refrigerator Download PDF

Info

Publication number
CN113587539B
CN113587539B CN202110871935.7A CN202110871935A CN113587539B CN 113587539 B CN113587539 B CN 113587539B CN 202110871935 A CN202110871935 A CN 202110871935A CN 113587539 B CN113587539 B CN 113587539B
Authority
CN
China
Prior art keywords
temperature
chamber
refrigerating
freezing
refrigerating chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110871935.7A
Other languages
Chinese (zh)
Other versions
CN113587539A (en
Inventor
王伟
张雪颖
韩晓蕾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic R&D Center Suzhou Co Ltd
Original Assignee
Panasonic R&D Center Suzhou Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic R&D Center Suzhou Co Ltd filed Critical Panasonic R&D Center Suzhou Co Ltd
Priority to CN202110871935.7A priority Critical patent/CN113587539B/en
Publication of CN113587539A publication Critical patent/CN113587539A/en
Application granted granted Critical
Publication of CN113587539B publication Critical patent/CN113587539B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002—Defroster control
    • F25D21/004—Control mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • 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
    • F25D17/06—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
    • F25D17/065—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 with 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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating

Abstract

The invention relates to the technical field of refrigerators, in particular to a defrosting control method applied to a refrigerator and the refrigerator. The invention provides a defrosting control method applied to a refrigerator, which comprises the following steps: step S1: starting a compressor to pre-cool, and keeping the temperature of an evaporator in an evaporation chamber below the temperature of a freezing chamber; step S2: after the step S1 is finished, the compressor is turned off, the heater is turned on, and the freezing chamber and the refrigerating chamber are simultaneously communicated with the evaporating chamber. The defrosting control method provided by the invention improves the temperature rising speed of the evaporating chamber by utilizing the high temperature of the freezing chamber and the refrigerating chamber relative to the evaporating chamber through the heat exchange of the evaporating chamber, the freezing chamber and the refrigerating chamber, thereby improving the integral defrosting efficiency of the refrigerator and reducing the defrosting energy consumption.

Description

Defrosting control method and refrigerator
Technical Field
The invention relates to the technical field of refrigerators, in particular to a defrosting control method applied to a refrigerator and the refrigerator.
Background
Refrigerators continuously cool by a cycle of compression-condensation-expansion-evaporation in a refrigerating system. The surface temperature of the evaporator is far lower than the dew point temperature of air when the refrigerating system of the refrigerator is in normal operation, a large amount of water contained in food and air in the refrigerator can be separated out and condensed on the outer wall of the evaporator, and when the temperature of the outer wall of the evaporator is lower than 0 ℃, the water can be condensed into frost. In refrigeration systems, frosting is difficult to avoid, as is the result of normal operation of the refrigeration system, so the evaporator surface allows for a small amount of frosting. However, as the refrigerator is used for a long time, a thicker frost layer can be accumulated on the surface of the evaporator, and the frost layer covers the surface of the evaporator to obstruct the heat conduction outside the evaporator, so that the heat circulation efficiency of the evaporator is affected, and the overall refrigeration efficiency of the refrigerator is seriously affected.
After the refrigerator is used for a period of time, the refrigerator is powered off, all foods in the refrigerator are taken out, and then the refrigerator is waited for naturally heating or heating and defrosting the inside of the refrigerator. However, the method is long in time consumption and complex in operation, and the refrigerator after temperature rise needs to be refrigerated again for temperature reduction, so that a large amount of energy consumption is generated.
In the prior art, a refrigerator with a defrosting mode can heat an evaporator through an internal heater so as to achieve the purpose of defrosting. However, in the defrosting process, high-temperature gas is inevitably escaped, the temperature of a refrigeration house such as a refrigerating chamber and a freezing chamber is influenced, and even food in the freezing chamber is defrosted. In addition, the evaporator usually maintains a lower temperature during normal refrigeration and early defrosting, so that the heating operation of the heater during early defrosting can generate a great deal of energy consumption and the heating efficiency is lower.
Therefore, a technical scheme is needed to be provided, so that the defrosting efficiency of the refrigerator can be effectively improved, the defrosting energy consumption is reduced, and meanwhile, the influence on the temperature of the refrigerator in the defrosting process is avoided.
Disclosure of Invention
In view of the above problems, the invention provides a defrosting control method for a refrigerator, which can obviously improve the defrosting efficiency of the refrigerator by controlling the heat exchange process during defrosting and effectively reduce the defrosting energy consumption of the refrigerator.
The invention provides a defrosting control method of a refrigerator, which comprises the following steps:
step S1: starting a compressor to pre-cool, and keeping the temperature of an evaporator in an evaporation chamber below the temperature of a freezing chamber;
step S2: after the step S1 is finished, the compressor is turned off, the heater is turned on, and the freezing chamber and the refrigerating chamber are simultaneously communicated with the evaporating chamber.
Firstly, the precooling process carries out high-intensity refrigeration, and the temperature of the freezing chamber and the refrigerating chamber is reduced to a level lower than the normal refrigeration temperature, so that the temperature of the freezing chamber and the refrigerating chamber can be kept in a temperature range in which food is not thawed or corrupted even if the temperature of the freezing chamber and the refrigerating chamber rises to some extent in the subsequent defrosting process. In addition, the temperature of the evaporating chamber is kept below the temperature of the freezing chamber, and after the heater starts to work, the evaporating chamber is communicated with the freezing chamber and the refrigerating chamber, so that the evaporating chamber can be effectively heated by using high-temperature air flow of the freezing chamber and the refrigerating chamber relative to the evaporating chamber, the heat exchange efficiency of the evaporating chamber is improved, the evaporating chamber is quickly heated, the defrosting time is shortened, and a remarkable energy-saving effect is achieved.
Preferably, in the technical solution of the present invention, the defrosting control method further includes:
step S3: when the difference between the temperature of the freezing chamber and the temperature of the evaporator is smaller than a first preset value, the first air flow passage between the freezing chamber and the evaporating chamber is disconnected.
In the defrosting process, the temperature of the evaporating chamber is continuously increased under the action of the heater, and meanwhile, the evaporating chamber and the refrigerating chamber are subjected to uninterrupted heat exchange. After the temperature of the evaporating chamber approaches the temperature of the freezing chamber, the first air flow passage between the freezing chamber and the evaporating chamber is disconnected, so that the situation that the temperature of the evaporating chamber is equal to or even higher than the temperature of the freezing chamber and heat exchange with the freezing chamber is continued, the temperature of the freezing chamber is continuously increased, and the normal freezing effect of the freezing chamber is influenced can be avoided.
Preferably, in the technical solution of the present invention, the defrosting control method further includes:
step S4: when the difference between the temperature of the refrigerating chamber and the temperature of the evaporator is smaller than a second preset value, a second airflow passage between the refrigerating chamber and the evaporating chamber is disconnected;
step S5: and when the temperature of the evaporator is greater than a third preset value, the heater is turned off.
Generally, the temperature of the freezing chamber in the refrigerator is far lower than the temperature of the refrigerating chamber, and the temperature of the evaporating chamber is still far lower than the temperature of the refrigerating chamber within a period of time after the first air flow passage is disconnected, so that the evaporating chamber and the refrigerating chamber can still keep air heat exchange to accelerate the temperature rise and defrosting of the evaporating chamber. Likewise, after the temperature of the evaporating chamber is continuously increased to approach the temperature of the refrigerating chamber, the second air flow passage between the refrigerating chamber and the evaporating chamber is disconnected, so that the situation that the temperature of the evaporating chamber is equal to or even higher than the temperature of the refrigerating chamber and the refrigerating chamber is continuously subjected to heat exchange can be avoided, and the temperature of the refrigerating chamber is increased accordingly to influence the refrigeration of food materials in the refrigerating chamber.
Further, in the preferred technical solution of the present invention, step S4 of the defrosting control method further includes:
step S41, when the temperature of the evaporator is greater than a fourth preset value, a fan is started;
in step S42, when the difference between the temperature of the refrigerating compartment and the temperature of the evaporator is less than the second preset value, the second air flow path is disconnected and the fan is turned off.
After step S3, the temperature of the evaporating chamber is slightly lower than the temperature of the freezing chamber, and after a period of heating, the temperature of the evaporating chamber is higher than the temperature of the freezing chamber, but still lower than the temperature of the refrigerating chamber. After the fourth preset value is reached, the fan is started, so that the airflow movement speed is increased, the heat exchange between the evaporating chamber and the refrigerating chamber is accelerated, and the defrosting speed of the evaporating chamber is further increased. Then, when the second air flow path is opened, the fan is simultaneously turned off, thereby stopping heat exchange between the evaporation chamber and the refrigerating chamber.
Preferably, in the technical solution of the present invention, step S4 may further include:
step S41, when the temperature of the evaporator is greater than a fourth preset value, a fan is started;
in step S43, when the difference between the evaporator temperature and the refrigerator compartment temperature is greater than the fifth preset value, the second air flow path is opened and the fan is turned off.
In the preferred embodiment, the fan is turned on after the temperature of the evaporating chamber reaches the fourth preset value, so that the evaporating chamber and the refrigerating chamber perform efficient and sufficient heat exchange. And, when the heat exchange is continued until the temperature of the evaporator is slightly higher than the temperature of the refrigerating chamber, the heat exchange between the evaporator and the refrigerating chamber is disconnected. Therefore, the air rich in water vapor in the evaporation chamber can enter the refrigerating chamber to increase the humidity in the refrigerating chamber, and the fresh-keeping environment of food materials in the refrigerating chamber is improved.
In a preferred embodiment of the present invention, in step S1 of the defrosting control method, the evaporation chamber is maintained at-32 to-30 ℃ and the freezing chamber is reduced to 2 to 6 ℃ lower than the freezing chamber set temperature. The temperature of the freezing chamber is reduced to be 2-6 ℃ lower than the set temperature of the freezing chamber, so that the temperature of the freezing chamber can be kept within the set working temperature range of the freezing chamber even if the temperature of the freezing chamber rises to a certain degree in the subsequent defrosting process. And the temperature of the evaporating chamber is kept at a certain temperature difference from minus 32 ℃ to minus 30 ℃ with the freezing chamber, so that after defrosting starts, the evaporating chamber and the freezing chamber can perform efficient heat exchange, and the temperature of the evaporating chamber can be quickly leveled with the temperature of the freezing chamber, thereby shortening the defrosting time and reducing the defrosting energy consumption.
Preferably, when the defrosting control method provided by the technical scheme of the invention is used for defrosting, the time for connecting the freezing chamber and the refrigerating chamber with the evaporating chamber simultaneously accounts for more than 10% of the duration of the total defrosting process. The freezing chamber, the refrigerating chamber and the evaporating chamber are communicated, so that the temperature rise speed of the evaporator can be greatly increased, the defrosting time is effectively shortened, and the obvious energy-saving effect is achieved.
Further, in the technical scheme of the present invention, in step S41 of the defrosting control method, the fourth preset value is-13 to-17 ℃. The fourth preset value is a temperature threshold for turning on the fan for accelerating heat exchange between the evaporating chamber and the refrigerating chamber. Therefore, the temperature of minus 13 to minus 17 ℃ is used as a threshold value, so that the evaporating chamber and the refrigerating chamber can be ensured to have certain temperature difference to perform sufficient heat exchange, and the condition that the evaporating chamber temperature is too low and the temperature difference of the evaporating chamber and the refrigerating chamber is too large can be avoided, so that the temperature of the refrigerating chamber is reduced to be lower than 0 ℃ and the fresh-keeping environment of the refrigerating chamber is damaged.
Preferably, in the technical scheme of the invention, the first preset value, the second preset value and the fifth preset value of the on-off threshold of the air flow channel related to the defrosting control method are all 1-2 ℃. The heat exchange between the evaporating chamber and the freezing chamber is stopped when the temperature difference is reduced to 1-2 ℃, so that the continuous temperature rise of the evaporating chamber is avoided, and the temperature of the freezing chamber and the refrigerating chamber is also increased. Similarly, the air flow passage is timely disconnected, so that the temperature rise of the refrigerating chamber and the freezing chamber is avoided, and the evaporating chamber is prevented from heat exchange with the refrigerating chamber and the freezing chamber after the temperature of the evaporating chamber is higher than that of the refrigerating chamber and the freezing chamber, and the temperature rise efficiency of the evaporating chamber is reduced.
In the technical scheme of the invention, the refrigerator using the defrosting control method comprises a refrigerating chamber, a freezing chamber and an air supply device, wherein the air supply device comprises: the shell comprises at least one air inlet, a refrigerating chamber air outlet and a freezing chamber air outlet; the fan is arranged in the shell; the refrigerating chamber baffle is arranged corresponding to the refrigerating chamber air outlet; the baffle plate of the freezing chamber is arranged corresponding to the air outlet of the freezing chamber; the driving part is arranged inside the shell and connected with the refrigerating chamber baffle and the freezing chamber baffle, and can adjust the opening degrees of the refrigerating chamber baffle and the freezing chamber baffle.
Drawings
Fig. 1 is a flowchart of a defrosting control method according to a first embodiment of the present invention;
FIG. 2 is a flow chart of a preferred defrost control method provided by a first embodiment of the present invention;
FIG. 3 is a flow chart of a further preferred defrost control method provided by the first embodiment of the present invention;
fig. 4 is a flowchart of a defrosting control method according to a second embodiment of the present invention;
FIG. 5 is a flow chart of a preferred defrost control method provided by a second embodiment of the present invention;
fig. 6 is a schematic view of a refrigerator according to a third embodiment of the present invention;
FIG. 7 is a schematic diagram of an air supply device according to a third embodiment of the present invention;
fig. 8 is a flowchart of a baffle control method according to a fourth embodiment of the present invention;
fig. 9 is a flow chart of a humidification method according to a fourth embodiment of the present invention when the compressor is in operation;
fig. 10 is a flow chart of a humidification method according to a fourth embodiment of the present invention when the compressor is stopped.
Reference numerals: 1-refrigerator, 2-refrigerating chamber, 3-freezing chamber, 4-air supply device, 41-shell, 42-air inlet, 43-freezing chamber air outlet, 431-freezing chamber baffle, 44-refrigerating chamber air outlet, 441-refrigerating chamber baffle, 45-fan and 46-driving part.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.
First embodiment
As shown in fig. 1, in a first embodiment of the present invention, there is provided a defrosting control method including the steps of:
step S1: starting a compressor to pre-cool, and keeping the temperature of an evaporator in an evaporation chamber below the temperature of a freezing chamber;
step S2: after the step S1 is finished, the compressor is turned off, the heater is turned on, and the freezing chamber and the refrigerating chamber are simultaneously communicated with the evaporating chamber.
Among them, the refrigerator according to the embodiment of the present invention implements a refrigerating system cycle of the refrigerator through a cycle of compression-condensation-expansion-evaporation of a refrigerant. Wherein the step of evaporating is a process in which the low-temperature low-pressure refrigerant having passed through the expansion valve is gasified by absorbing heat in the refrigerator chamber by the evaporator. During the process of absorbing the heat energy in the chamber, the surface of the evaporator may reach a lower temperature, so that moisture in the air is condensed on the surface of the evaporator, and the condensation becomes frost to adhere to the surface of the evaporator as time increases and the temperature further decreases.
In order to remove the frost layer condensed on the surface of the evaporator, the space where the evaporator is located, that is, the evaporation chamber, needs to be heated by the heater, so that the frost layer condensed on the surface of the evaporator is melted and falls off. In the embodiment of the present invention, the heater may be a heating defroster of a refrigerator such as an aluminum foil heater, a defroster, or the like, and is not limited herein.
In the defrosting control method provided in this embodiment, before defrosting, a pre-cooling process is performed first, and the compressor is turned on to make the compressor run at full load; the evaporator temperature E is kept below the freezing chamber temperature D, for example, the freezing chamber temperature D is-21 ℃, the evaporator temperature E is kept at-31 ℃, and after the heater starts to work, the evaporator is communicated with the freezing chamber and the refrigerating chamber, so that the high temperature of the freezing chamber and the refrigerating chamber relative to the evaporator can be effectively utilized, the heat exchange efficiency of the evaporator is improved, the evaporator is quickly heated, the defrosting time is shortened, and a remarkable energy-saving effect is achieved. And, the precooling process can also reduce the freezing chamber temperature D and the refrigerating chamber temperature F to a level lower than the normal refrigeration temperature, for example, the set temperature of the freezing chamber is minus 17 ℃, and the precooling process reduces the set temperature to minus 21 ℃, so that the freezing chamber temperature D and the refrigerating chamber temperature F can be raised to some extent and can be kept in the temperature range of the normal refrigeration operation in the subsequent defrosting process.
As shown in fig. 2, in the first embodiment of the present invention, preferably, the defrosting control method further includes:
step S3: when the difference between the temperature D of the freezing chamber and the temperature E of the evaporator is smaller than the first preset value M 1 When the first air flow passage between the freezing chamber and the evaporating chamber is opened.
At the start of defrosting, the evaporator temperature E is the lowest among the freezing chamber temperature D, the evaporator temperature E, and the refrigerating chamber temperature F due to the pre-cooling process. By the action of the heater, the temperature E of the evaporating chamber is continuously increased, and meanwhile, continuous heat exchange is carried out with the freezing chamber and the refrigerating chamber. For example, at the start of defrosting, the freezing chamber temperature D is-21 ℃, the evaporating chamber temperature E is-31 ℃, the refrigerating chamber temperature F is 1 ℃, and the freezing chamber temperature is increased with the evaporating chamber temperature EThe difference between D and evaporator temperature E becomes smaller and smaller. In the case that the difference D-E is smaller than the first preset value M 1 At this time, it is explained that the evaporating chamber temperature E is already quite close to the freezing chamber temperature D, and at this time, the heat exchange between the freezing chamber and the evaporating chamber cannot perform an effective temperature raising function, and the first air flow path between the freezing chamber and the evaporating chamber is disconnected. Then, the evaporating chamber temperature E continues to rise, so that when the evaporating chamber temperature E is equal to or even higher than the freezing chamber temperature D, the disconnected first airflow passage can avoid the evaporating chamber and the freezing chamber to continue to exchange heat, thereby avoiding that the freezing chamber temperature D continues to rise along with the evaporating chamber temperature E and affecting the normal freezing effect of the freezing chamber.
In the process, the temperature of the freezing chamber relative to the temperature of the evaporating chamber at the beginning of defrosting is utilized, the temperature rise of the evaporating chamber is accelerated, the defrosting time can be effectively shortened, and the obvious energy-saving effect is achieved.
As shown in fig. 3, in the first embodiment of the present invention, it is further preferable that the defrosting control method further includes:
step S4: when the difference between the temperature F of the refrigerating chamber and the temperature E of the evaporating chamber is smaller than the second preset value M 2 When the refrigerating chamber and the evaporating chamber are opened, the second air flow passage between the refrigerating chamber and the evaporating chamber is opened;
step S5: when the evaporating chamber temperature E is greater than the third preset value M 3 When the heater is turned off.
After the first air flow passage is closed, heat exchange between the evaporating chamber and the freezing chamber is stopped, and the evaporating chamber temperature E is kept rising continuously under the action of the heater. For example, after the first air flow passage is closed, the evaporating chamber temperature E is-23 ℃, the refrigerating chamber temperature F is 1 ℃, and the difference between the refrigerating chamber temperature F and the evaporator temperature E is reduced. In the case that the difference F-E is smaller than the second preset value M 3 At this time, it is explained that the evaporating chamber temperature E is already quite close to the refrigerating chamber temperature F, and at this time, the heat exchange between the refrigerating chamber and the evaporating chamber cannot perform an effective heating function, so that the second air flow path between the refrigerating chamber and the evaporating chamber is disconnected. Then, the evaporating chamber temperature E continues to rise so that the evaporating chamber temperature E becomes equal to or even higher than the refrigerating chamber temperature F, and the second one is disconnected at this timeThe air flow passage can avoid the continuous heat exchange between the evaporating chamber and the refrigerating chamber, so that the temperature F of the refrigerating chamber is prevented from being continuously increased along with the temperature E of the evaporating chamber, and the normal working temperature of the refrigerating chamber is prevented from being influenced.
After the first air flow passage is closed, the temperature D of the freezing chamber in the refrigerator is far lower than the temperature F of the refrigerating chamber, and when the first air flow passage is disconnected, the temperature E of the evaporating chamber is still far lower than the temperature F of the refrigerating chamber, and the evaporating chamber and the refrigerating chamber can still keep gas heat exchange so as to continuously accelerate the temperature rise and defrosting of the evaporating chamber.
Finally, the first airflow passage and the second airflow passage are closed, at the moment, the heat exchange space of the evaporator is limited in the evaporation chamber where the evaporator is located, and the heat exchange efficiency can be effectively improved by reducing the heat exchange space, and the temperature rising speed of the evaporation chamber is improved. In case that the temperature E of the evaporating chamber is detected to be greater than the third set value M 3 I.e., the temperature is indicated to meet the criteria for defrost completion, the heater may be turned off and the defrost process is terminated.
Second embodiment
The second embodiment of the present invention is a further preferred embodiment based on the first embodiment, and as shown in fig. 4, the defrosting control method provided in the embodiment further includes:
step S41, when the evaporator temperature E is greater than the fourth preset value M 4 When the fan is started;
in step S42, when the difference between the refrigerating chamber temperature F and the evaporator temperature E is less than the second preset value, the second air flow path is opened and the fan is turned off.
After the first air flow passage is closed, the evaporator temperature E is close to the freezing chamber temperature D, still has a larger difference from the refrigerating chamber temperature F, and after a period of heating, the evaporator temperature E gradually rises and is more and more close to the refrigerating chamber temperature F. When the evaporator temperature E reaches a fourth preset value, the difference between the refrigerating chamber temperature F and the evaporator temperature E is kept at a middle level, and the fan is started, so that the airflow movement speed is increased, the heat exchange between the evaporating chamber and the refrigerating chamber can be accelerated, and the defrosting speed of the evaporating chamber is further increased. The reason why the fan is not selected to be turned on immediately after the first air flow passage is turned off is that the evaporator temperature E is close to the freezing chamber temperature D at that time, and if the fan is turned on immediately, the temperature is too low, and the cooling chamber temperature F may be rapidly lowered to destroy the cooling environment. The process of opening the second gas flow path is the same as that of step S4 in the first embodiment, and will not be described here.
As shown in fig. 5, preferably, in the present embodiment, step S4 of the defrosting control method may further include:
step S41, when the evaporator temperature E is greater than the fourth preset value M 4 When the fan is started;
step S43, when the difference between the evaporator temperature E and the refrigerating chamber temperature F is greater than the fifth preset value M 5 When the second airflow path is disconnected and the fan is turned off.
Similarly, the step S41, i.e. the step of turning on the fan, is the same as the scheme in fig. 4, and will not be described here. After the fan is started, the evaporating chamber and the refrigerating chamber perform efficient and sufficient heat exchange, the temperature E of the evaporating chamber is continuously increased, and when the difference between the temperature E of the evaporator and the temperature F of the refrigerating chamber is larger than a fifth preset value M 5 I.e. the evaporator temperature E is slightly higher than the refrigerating chamber temperature F, the second air flow path is opened again. Thus, after the fan is turned on, the temperature in the evaporation chamber is slightly higher (greater than M 4 ) But still be less than refrigerating chamber temperature F's air can get into the refrigerating chamber to through fan effect and refrigerating chamber carry out abundant heat exchange, the air that is rich in steam in the evaporimeter can get into the refrigerating chamber more to increase the humidity in the refrigerating chamber, improve the fresh-keeping environment of food material in the refrigerating chamber, and when evaporimeter temperature E is slightly higher than refrigerating chamber temperature F, break off second air current passageway, the air temperature that gets into the refrigerating chamber can not be too high and influence refrigerating chamber's low temperature and keep.
It should be noted that, in order to keep the food material in the refrigerating chamber fresh and avoid drying, it may still be necessary to keep the refrigerating chamber in a high humidity state during the steady state operation of the refrigerator, which may be achieved by combining the steady state control and the defrost humidification mode of the refrigerator.
In the embodiment of the present invention, in step S1 of the defrosting control method, the refrigerator is pre-cooled, preferably the evaporating chamber temperature E may be maintained at-32 to-30 ℃, and the freezing chamber temperature D is reduced to 2 to 6 ℃ lower than the freezing chamber set temperature, for example, -17 ℃, and the pre-cooling process reduces the freezing chamber temperature D to-21 ℃. When defrosting starts, the temperature E of the evaporating chamber is-32 to-30 ℃ and a certain temperature difference is kept between the evaporating chamber and the freezing chamber, and the evaporating chamber and the freezing chamber can keep high-efficiency heat exchange, so that the temperature E of the evaporating chamber can be rapidly leveled with the temperature D of the freezing chamber, the defrosting time is shortened, and the defrosting energy consumption is reduced. In the defrosting process, the temperature D of the freezing chamber is unavoidably raised to a certain extent along with the rise of the temperature E of the evaporating chamber, but the precooling reduced temperature can still be kept within the set working temperature range of the freezing chamber, so that the normal freezing operation of the freezing chamber is not influenced.
Preferably, in the embodiment of the present invention, when the defrosting operation is performed, the freezing chamber and the refrigerating chamber are simultaneously connected with the evaporating chamber, and the time is more than 10% of the duration of the total defrosting process. The test experiment shows that the freezing chamber, the refrigerating chamber and the evaporating chamber are communicated with each other, so that the temperature rise speed of the evaporator can be greatly increased, the defrosting time is effectively shortened, and the obvious energy-saving effect of more than 2% is achieved.
Further, in the embodiment of the present invention, in step S41 of the defrosting control method, the fourth preset value M 4 Is between-13 and-17 ℃. Fourth preset value M 4 The fan is turned on to speed up heat exchange between the evaporating chamber and the refrigerating chamber. Therefore, the temperature of 13 ℃ below zero to 17 ℃ below zero is taken as a threshold value, so that a certain temperature difference between the evaporating chamber and the refrigerating chamber can be ensured to perform sufficient heat exchange, and the temperature E of the evaporating chamber is accelerated to rise; but also can avoid the too low temperature E of the evaporating chamber, and the temperature F of the refrigerating chamber is reduced to below 0 ℃ by heat exchange, thereby damaging the fresh-keeping environment of the refrigerating chamber.
In the embodiment of the invention, the first preset value, the second preset value and the fifth preset value in the defrosting control method are on-off thresholds of the first air flow passage and the second air flow passage, and the optimal selection values are all 1-2 ℃. The heat exchange between the evaporating chamber and the freezing chamber is stopped when the temperature difference is reduced to 1-2 ℃, so that the continuous temperature rise of the evaporating chamber is avoided, and the temperature of the freezing chamber and the refrigerating chamber is also increased. Similarly, the first air flow passage and the second air flow passage are timely disconnected, so that the temperature rise of the freezing chamber and the refrigerating chamber is avoided, and meanwhile, the heat exchange between the evaporating chamber and the freezing chamber and the refrigerating chamber with lower temperature after the temperature of the evaporating chamber is higher than that of the freezing chamber and the refrigerating chamber can be avoided, and the temperature rise efficiency of the evaporating chamber is reduced.
Third embodiment
As shown in fig. 6, in a third embodiment of the present invention, there is also provided a refrigerator 1 using the above defrosting control method, including a refrigerating compartment 2, a freezing compartment 3, and an air blowing device 4. The air supply device 4 is located between the freezing chambers 3, and includes: a housing 41 including at least one air inlet 42, a freezing chamber air outlet 43, and a refrigerating chamber air outlet 44; a fan 45 disposed inside the housing 41; a freezing chamber baffle 431 provided corresponding to the freezing chamber air outlet 43; a refrigerating chamber baffle 441 provided in correspondence with the refrigerating chamber air outlet 44; the driving unit 46 is provided inside the casing 41, and is connected to the freezing chamber damper 431 and the refrigerating chamber damper 441, and can adjust the opening degrees of the freezing chamber damper 431 and the refrigerating chamber damper 441.
The freezing chamber baffle 431 and the freezing chamber air outlet 43 are correspondingly arranged in the first air flow passage, and when the freezing chamber baffle 431 is closed, the freezing chamber air outlet 43 is completely closed, and the first air flow passage is disconnected; when the freezing chamber baffle 431 is opened, the freezing chamber air outlet 43 is opened, and the first air flow passage is communicated. Similarly, the refrigerating compartment damper 441 is disposed in the second airflow path in correspondence with the refrigerating compartment air outlet 44, and when the refrigerating compartment damper 441 is closed, the refrigerating compartment air outlet 44 is completely closed, and the second airflow path is opened; when the refrigerating compartment damper 441 is opened, the refrigerating compartment outlet 44 is opened, and the second air flow path communicates.
Further, in the embodiment of the present invention, the driving part 46 can drive the freezing chamber baffle 431 and the refrigerating chamber baffle 441 to stepwise or steplessly adjust the opening degrees, thereby controlling the gas exchange rates in the first and second gas flow paths to achieve precise control of the temperature change of each chamber when the refrigerator is operated.
Fourth embodiment
A fourth embodiment of the present invention provides a method for controlling a baffle plate of an air supply device in an ice chest, which is applicable to the third embodiment, and the specific steps thereof are as shown in fig. 8:
step S51: when detecting that the temperature D of the freezing chamber of the refrigerator is greater than or equal to the preset first opening temperature P 1 When the compressor is started, the freezing chamber is cooled, and when the temperature F of the refrigerating chamber is greater than or equal to the preset first starting temperature Q 1 Calculating the opening rate of the baffle according to the external temperature, the set temperature of the refrigerating chamber and the revolution number of the compressor, and opening the baffle of the refrigerating chamber;
step S52: after the baffle of the refrigerating chamber is opened, detecting the cooling speed of the refrigerating chamber, and adjusting the opening rate of the baffle according to the cooling speed;
step S53: when the temperature F of the refrigerating chamber is detected to be less than or equal to the preset first closing temperature Q 2 When the refrigerator is closed, the baffle plate of the refrigerating chamber is closed.
Further, in the baffle control method provided in the present embodiment, step S51 further includes:
step S511, detecting the external temperature of the refrigerator, and calculating the external temperature opening rate according to the external temperature;
step S512, calculating the opening rate of the refrigerating chamber set value according to the refrigerating chamber set temperature;
step S513, calculating the opening rate of the revolution number of the compressor according to the revolution number of the compressor;
step S514, the baffle opening rate is calculated by integrating the external temperature opening rate, the refrigerating chamber set value opening rate and the compressor rotation opening rate.
According to the baffle control method provided by the embodiment, the baffle opening rate is calculated according to the external temperature, the set temperature of the refrigerating chamber and the revolution number of the compressor, so that the most accurate baffle opening rate is obtained, and the accurate control of the gas exchange rate and the chamber temperature is realized; and the opening rate of the baffle is matched with the load capacity of the refrigerating chamber, so that the fluctuation range of the temperature of the refrigerating chamber can be reduced, the temperature rise of the freezing chamber is restrained, and the overall system efficiency of the ice box is improved.
In the specific implementation process, firstly, according to the external temperature, calculating the opening rate of the external temperature, wherein the higher the external temperature is, the larger the temperature difference between the inside and the outside of the refrigerator is, the larger the air outlet of the refrigerating chamber is required, and correspondingly, the opening rate of the external temperature is increased along with the increase of the external temperature; then calculating the opening rate of the refrigerating chamber set value according to the refrigerating chamber set temperature, wherein the higher the refrigerating chamber set temperature is, the smaller the temperature difference between the target temperature and the external temperature is, the smaller the air outlet of the refrigerating chamber is required, and accordingly, the opening rate of the refrigerating chamber set value is reduced along with the increase of the refrigerating chamber set temperature; then, according to the number of revolutions of the compressor, calculating the opening rate of the number of revolutions of the compressor, wherein the higher the number of revolutions of the compressor is, the faster the refrigerating efficiency is, the smaller the air outlet of the refrigerating chamber is required, and accordingly, the opening rate of the number of revolutions of the compressor is reduced along with the increase of the number of revolutions of the compressor; and finally, adding the three to obtain the baffle opening rate.
Preferably, the baffle control method provided in the present embodiment, step S52 further includes:
step S521, when the cooling speed is greater than the preset upper limit of the cooling speed, the opening rate of the baffle is reduced;
in step S522, when the cooling speed is less than the preset lower limit of the cooling speed, the opening rate of the baffle is increased.
The baffle aperture rate of the baffle of the refrigerating chamber can be set according to a time point, namely the real-time state of the refrigerator before the baffle is opened, and the temperature change rate in the temperature adjusting process can be combined for correction, so that the accurate control of the temperature is further realized.
Further, the baffle control method provided in the present embodiment further includes:
step S501: when detecting that the temperature D of the freezing chamber of the refrigerator is greater than or equal to the preset second opening temperature P 1 When the air conditioner is started, the compressor and the baffle plate of the freezing chamber of the air supply device are started;
step S502: when the evaporating chamber temperature E is greater than or equal to the freezing chamber temperature D, closing the freezing chamber baffle;
step S503: when the difference between the temperature D of the freezing chamber and the temperature E of the evaporating chamber is larger than or equal to a preset refrigerating value N, a baffle plate of the freezing chamber is opened:
step S504: when the temperature D of the freezing chamber of the refrigerator is detected to be less than or equal to the preset second closing temperature P 2 When the compressor and the freezing chamber baffle are closed.
When the refrigerating chamber and the freezing chamber are simultaneously cooled, the excessive air return quantity of the refrigerating chamber can lead the temperature E of the evaporating chamber to rise too high, thereby influencing the cooling of the freezing chamber. In this embodiment, when the evaporating chamber temperature E is greater than or equal to the freezing chamber temperature D, the freezing chamber baffle is closed, and the refrigerating chamber is cooled alone, so as to avoid the excessively high temperature rise of the freezing chamber. And then, after the temperature difference between the evaporating chamber temperature E and the freezing chamber temperature D is reduced to exceed a preset refrigerating value N, judging that the cooling condition of the freezing chamber is mature, and then opening a baffle plate of the freezing chamber to cool the freezing chamber.
Preferably, the baffle control method of the embodiment can realize accurate temperature control in a steady state operation state of the refrigerator, wherein the step of opening and closing the baffle to control the on-off of the airflow passage is combined with the humidification step of the defrosting control method in the previous embodiment, so that a high humidity mode in the steady state operation state of the refrigerator can be realized.
First, as shown in fig. 9, during steady operation of the refrigerator, a high humidity mode is entered.
Step S61: when detecting that the temperature D of the freezing chamber of the refrigerator is greater than or equal to the preset first opening temperature P 1 When the compressor is started, the fan is started, the baffle of the refrigerating chamber is closed, the baffle of the freezing chamber is opened, and the cooling of the freezing chamber is started;
step S62: detecting the external temperature and the cooling speed of the freezing chamber, and calculating the revolution R of the compressor and the revolution VF of the fan, wherein the freezing chamber is continuously cooled; when detecting that the temperature D of the freezing chamber of the refrigerator is less than or equal to the preset second closing temperature P 2 Closing the baffle of the freezing chamber;
step S63: if the temperature F of the refrigerating chamber is greater than or equal to the preset first opening temperature Q 1 Opening the baffle of the refrigerating chamber, reducing the revolution R of the compressor and the revolution VF of the fan, and if not, closing the fan and the compressor;
step S64: when the temperature F of the refrigerating chamber is detected to be less than or equal to the preset first closing temperature Q 2 In the time-course of which the first and second contact surfaces,closing the refrigerator baffle; if the temperature D of the freezing chamber of the refrigerator is detected to be less than or equal to the preset first opening temperature P 1 When the fan and the compressor are turned off; otherwise, step S62 is performed.
According to the humidifying method, firstly, the freezing chamber is cooled independently; then, the preset second closing temperature P is reached in the freezing chamber 2 After that, the freezer compartment door is closed. At this time, if the refrigerating chamber temperature F is smaller than the first opening temperature Q 1 If the pre-cooling step before the humidification is finished, the fan and the compressor can be turned off, and then the humidification is carried out; if the temperature F of the refrigerating chamber is greater than or equal to the preset first opening temperature Q 1 Opening the baffle of the refrigerating chamber, reducing the revolution R of the compressor and the revolution VF of the fan to match the load of the refrigerating chamber, simultaneously raising the temperature E of the evaporator, preparing for the next humidification to cool the refrigerating chamber until the temperature F of the refrigerating chamber reaches a preset first closing temperature Q 2 The refrigerator compartment barrier is closed. If at this time, it is detected that the temperature D of the freezing chamber of the refrigerator is less than or equal to the preset first opening temperature P 1 When the cooling chamber and the refrigerating chamber are pre-cooled, the fan and the compressor can be turned off, and then humidification is carried out; otherwise, step S62 is performed to cool the freezing chamber again.
Through the above-mentioned circulation cooling step, guarantee that freezer and cold-stored room all are under the temperature of predetermineeing, and freezer and cold-stored room all accomplish the precooling promptly, can continue to carry out the humidification step:
as shown in fig. 10, the steps after the pre-cooling are completed are as follows:
step S65, closing the compressor, starting the heater, closing the baffle of the freezing chamber and opening the baffle of the refrigerating chamber;
step S66, when the evaporator temperature E is greater than the fourth preset value M 4 When the fan is started;
step S67, when the difference between the evaporator temperature E and the refrigerating chamber temperature F is greater than the fifth preset value M 5 When the fan and the baffle of the refrigerating chamber are closed;
step S68, when the evaporating chamber temperature E is greater than the sixth preset value M 6 In the time-course of which the first and second contact surfaces,the heater is turned off.
Firstly, the freezing chamber after precooling is closed, and the refrigerating chamber and the evaporating chamber begin to exchange heat, so that air rich in water vapor in the evaporating chamber enters the refrigerating chamber due to temperature rise after the heater is started, and the refrigerating chamber is humidified; the evaporating chamber temperature E is usually at a lower level than the refrigerating chamber temperature F, and the temperature difference between the evaporating chamber temperature E and the refrigerating chamber temperature F is larger, so that the fan is not started at this time, and the refrigerating chamber temperature F is prevented from falling too fast under the influence of the evaporating chamber temperature E; when the evaporator temperature E is greater than the fourth preset value M 4 When the temperature E of the evaporating chamber is increased to a certain degree, the fan is started at the moment, so that the heat exchange of air flow between the refrigerating chamber and the evaporating chamber is accelerated, and the air rich in water vapor in the evaporating chamber enters the refrigerating chamber more, thereby playing a role in humidifying the refrigerating chamber; however, as the evaporating chamber temperature E continues to rise, after the evaporating chamber temperature E is slightly higher than the refrigerating chamber temperature F, the air flow heat exchange between the refrigerating chamber and the evaporating chamber needs to be stopped, i.e. the fan and the refrigerating chamber baffle are closed, so that the refrigerating chamber temperature F is prevented from rising due to the overhigh evaporating chamber temperature E, and the refrigerating environment temperature is destroyed; at the same time, after the fan is started, the temperature E of the evaporating chamber is increased to a sixth preset value M 6 When the heater is turned off, the evaporator temperature E is stopped from rising, and the evaporator temperature E is maintained at a sixth preset value M 6 Thereby prolonging the humidification time of the refrigerating chamber and improving the humidification efficiency.
Reference throughout this specification to "an embodiment" means that a particular feature, step, function, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment of the invention. Furthermore, the particular features, steps, functions, or characteristics may be combined in any suitable manner in one or more embodiments. For example, the first embodiment may be combined with the second embodiment as long as the two embodiments are not mutually exclusive.
Thus far, the technical solution of the present invention has been described in connection with the accompanying drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.

Claims (6)

1. A defrosting control method of a refrigerator, comprising the steps of:
step S1: starting a compressor to pre-cool an evaporation chamber, and keeping the temperature of an evaporator in the evaporation chamber below the temperature of a freezing chamber;
step S2: after the step S1 is finished, the compressor is turned off, the heater is turned on, and the freezing chamber and the refrigerating chamber are simultaneously communicated with the evaporating chamber;
step S3: when the difference between the temperature of the freezing chamber and the temperature of the evaporator is smaller than a first preset value, a first airflow passage between the freezing chamber and the evaporation chamber is disconnected;
step S4: when the difference between the temperature of the refrigerating chamber and the temperature of the evaporator is smaller than a second preset value, a second airflow passage between the refrigerating chamber and the evaporating chamber is disconnected;
step S5: when the temperature of the evaporator is greater than a third preset value, the heater is turned off;
wherein, the step S4 further includes:
step S41, when the temperature of the evaporator is greater than a fourth preset value, a fan is started;
step S42, when the difference value between the temperature of the refrigerating chamber and the temperature of the evaporator is smaller than a second preset value, the second air flow passage is disconnected and the fan is turned off;
alternatively, the step S4 further includes:
step S41, when the temperature of the evaporator is greater than a fourth preset value, a fan is started;
and S43, when the difference between the evaporator temperature and the refrigerating chamber temperature is larger than a fifth preset value, the second air flow passage is disconnected and the fan is turned off.
2. The defrosting control method as claimed in claim 1, wherein in the step S1, the evaporation chamber is maintained at-32 to-30 ℃ and the freezing chamber is lowered to 2 to 6 ℃ lower than a freezing chamber set temperature.
3. The defrosting control method as claimed in claim 1, wherein a time for simultaneously switching on the freezing compartment and the refrigerating compartment with the evaporating compartment is 10% or more of a duration of the total defrosting process.
4. The defrosting control method as set forth in claim 1, wherein the fourth preset value is-13 to-17 ℃.
5. The defrosting control method as set forth in claim 1, wherein the first preset value, the second preset value, and the fifth preset value are 1 to 2 ℃.
6. A refrigerator including a refrigerating compartment, a freezing compartment, and an air blowing device, wherein the refrigerator uses the defrost control method according to any one of claims 1 to 5, the air blowing device comprising:
the shell comprises at least one air inlet, a refrigerating chamber air outlet and a freezing chamber air outlet;
the fan is arranged inside the shell;
a refrigerating chamber baffle plate is arranged corresponding to the refrigerating chamber air outlet;
the freezing chamber baffle plate is arranged corresponding to the air outlet of the freezing chamber;
and a driving part which is arranged in the shell and is connected with the refrigerating chamber baffle and the freezing chamber baffle, and can adjust the opening degrees of the refrigerating chamber baffle and the freezing chamber baffle.
CN202110871935.7A 2021-07-30 2021-07-30 Defrosting control method and refrigerator Active CN113587539B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110871935.7A CN113587539B (en) 2021-07-30 2021-07-30 Defrosting control method and refrigerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110871935.7A CN113587539B (en) 2021-07-30 2021-07-30 Defrosting control method and refrigerator

Publications (2)

Publication Number Publication Date
CN113587539A CN113587539A (en) 2021-11-02
CN113587539B true CN113587539B (en) 2023-05-23

Family

ID=78252685

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110871935.7A Active CN113587539B (en) 2021-07-30 2021-07-30 Defrosting control method and refrigerator

Country Status (1)

Country Link
CN (1) CN113587539B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114992972B (en) * 2022-05-25 2024-04-05 河南新飞制冷器具有限公司 Defrosting control method for air-cooled refrigerator

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3636602B2 (en) * 1998-09-16 2005-04-06 株式会社東芝 refrigerator
CN101963437A (en) * 2010-09-17 2011-02-02 海信容声(广东)冰箱有限公司 Defrosting control system and control method of refrigerator
CN104329872A (en) * 2014-10-24 2015-02-04 海信容声(广东)冰箱有限公司 Refrigerator evaporator defrosting method
CN105674669B (en) * 2016-02-02 2017-10-27 河南新飞电器有限公司 A kind of defrosting method of dual system wind cooling refrigerator
CN106091535A (en) * 2016-05-30 2016-11-09 Tcl家用电器（合肥）有限公司 Chill box damping control method and wind cooling refrigerator
CN111457654B (en) * 2019-01-18 2021-11-26 松下知识产权经营株式会社 Air supply device and refrigerator

Also Published As

Publication number Publication date
CN113587539A (en) 2021-11-02

Similar Documents

Publication Publication Date Title
JP3576092B2 (en) refrigerator
RU2137064C1 (en) Refrigerator with highly-effective refrigeration cycle with several evaporators (continuous evaporating cycle) and method of control of this refrigerator
EP3093588B1 (en) Refrigerator and method for controlling a refrigerator
JP3538021B2 (en) Refrigerator cooling operation control device
JP2003207248A (en) Refrigerator
CN109798713B (en) Three-circulation air-cooled refrigerator and defrosting method thereof
CN107044756A (en) The anti-freeze control method of air door and refrigerator
JP2001082850A (en) Refrigerator
CN113587539B (en) Defrosting control method and refrigerator
CN111678206A (en) Air conditioning unit and control method thereof
JPH11173729A (en) Refrigerator
JP3504185B2 (en) refrigerator
CN113915866A (en) Refrigerator and control method thereof
JP3049425B2 (en) Refrigerator with two evaporators
JPH11148761A (en) Refrigerator
JPH11257822A (en) Refrigerator
JPH08296942A (en) Freezer-refrigerator and its controlling method
JPH10267504A (en) Refrigerator
JPH09236369A (en) Refrigerator
JP2000283626A (en) Refrigerator
JP2000356445A (en) Refrigerator
JP2002195726A5 (en)
KR100249195B1 (en) Refrigerator
CN117404845A (en) Refrigerator and control method thereof
KR100305321B1 (en) refrigerator as cooling air curtain

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant