CN110440502B - Defrosting and humidifying device of air-cooled refrigerator and control method thereof - Google Patents
Defrosting and humidifying device of air-cooled refrigerator and control method thereof Download PDFInfo
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- CN110440502B CN110440502B CN201910803186.7A CN201910803186A CN110440502B CN 110440502 B CN110440502 B CN 110440502B CN 201910803186 A CN201910803186 A CN 201910803186A CN 110440502 B CN110440502 B CN 110440502B
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- evaporator
- refrigerator
- refrigerating chamber
- air
- defrosting
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- 238000010257 thawing Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000007710 freezing Methods 0.000 claims abstract description 23
- 230000008014 freezing Effects 0.000 claims abstract description 23
- 238000005057 refrigeration Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 235000012055 fruits and vegetables Nutrition 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000003020 moisturizing effect Effects 0.000 description 5
- 235000013305 food Nutrition 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000219112 Cucumis Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
- F25D2317/041—Treating air flowing to refrigeration compartments by purification
- F25D2317/0413—Treating air flowing to refrigeration compartments by purification by humidification
- F25D2317/04131—Control means therefor
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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
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
Abstract
The invention discloses a defrosting and humidifying device of an air-cooled refrigerator and a control method thereof, and relates to the technical field of refrigerators. The invention comprises the following steps: the refrigerator comprises a refrigerator body, a refrigerating chamber, a freezing chamber, a refrigerating system, an air circulation system and a defrosting and humidifying system; the refrigeration system comprises a compressor, an evaporator, a capillary tube, a filter and a condenser; the compressor is arranged in the compressor cavity below the refrigerating chamber; the evaporator is in communication with the compressor and is mounted in an evaporator cavity in the rear side of the refrigerated compartment. The invention utilizes the principle that the frost on the evaporator is converted into liquid state to absorb heat but the temperature is not changed; when the frost is melted, the main control board of the refrigerator controls the refrigerating fan to blow wet air generated by defrosting into the refrigerating chamber for humidification; by utilizing the forced convection method, high-humidity air is blown into the refrigerating chamber, the defrosting heating time is shortened, the average value of the relative humidity of a system in the single-system air-cooled refrigerator is increased from 40% to 80% at most during defrosting, and the fruit and vegetable fresh-keeping effect of the refrigerating chamber is greatly improved.
Description
Technical Field
The invention belongs to the technical field, and particularly relates to a defrosting and humidifying device of an air-cooled refrigerator and a control method thereof.
Background
The single-system air-cooled refrigerator occupies a large share of the air-cooled refrigerator market in terms of high cost performance. The single-system air-cooled refrigerator also has the characteristic of automatic heating and defrosting, and the evaporator is positioned in a low-temperature freezing chamber and is in a low-temperature state for a long time, and has strong dehumidification capability, so that the average humidity of the refrigerating chamber is 25 percent and 40 percent respectively during normal refrigeration and defrosting. The fruits and vegetables stored in the refrigerating chamber of the single-system air-cooled refrigerator are easy to air-dry, and the greatest disadvantage of the single-system air-cooled refrigerator is caused. In a single-system refrigerator, one or more areas which are independent in relative sealing are singly divided, so that a method for realizing a drying area (the relative humidity is below 45%) and a moisture preservation area (the relative humidity is above 90%) in the areas is realized by utilizing the current situation that the humidity of a refrigerating chamber of the single-system refrigerator is low, and the humidity is uncontrollable; the method for realizing the moisturizing area is a method for completely sealing an independent area without circulating wind and reserving moisture of food in the moisturizing area, and the moisturizing realized by the method enables harmful gas emitted by the food to accumulate, so that melons and fruits are easy to ripen and mould is easy to grow. The humidity control means of the humidity control area of the single-system air-cooled refrigerator is limited, and the current situation in the industry is that the humidity cannot be adjusted or the humidity adjusting cost is too high.
The invention provides a defrosting and humidifying device of an air-cooled refrigerator and a control method thereof, which are based on the characteristics of a single-system air-cooled refrigerator, utilize the principle that the solid state is converted into the liquid state to absorb heat but the temperature is not changed when frost water is converted, and the air thermodynamic principle is that a refrigerating chamber of the single-system air-cooled refrigerator is humidified, so that the average value of the relative humidity of the refrigerating chamber is increased from 40% to more than 80% when the system is defrosted, condensation is not generated, the influence on the temperature of a freezing chamber is small, no additional device is required to be added, the effect is good, the cost is not increased, and the air-cooled refrigerator is low-carbon and environment-friendly.
Disclosure of Invention
The invention aims to provide a defrosting and humidifying device of an air-cooled refrigerator and a control method thereof, and solves the existing problems.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a defrosting and humidifying device of an air-cooled refrigerator, which comprises: the refrigerator comprises a refrigerator body, a refrigerating chamber, a freezing chamber, a refrigerating system, an air circulation system and a defrosting and humidifying system;
the refrigeration system comprises a compressor, an evaporator, a capillary tube, a filter and a condenser; the compressor is arranged in a compressor cavity below the refrigerating chamber; the evaporator is communicated with the compressor and is arranged in an evaporator cavity at the rear side of the refrigerating chamber;
the air circulation system comprises a freezing chamber air channel, a refrigerating chamber air channel and a refrigerating return air channel; one end of the freezing chamber air channel is communicated with the upper part of the evaporator cavity, and the other end of the freezing chamber air channel is communicated with the refrigerating chamber air channel; a refrigerating fan is arranged in the air duct of the freezing chamber; an electric air door is arranged at the joint of the refrigerating return air duct and the freezing chamber air duct; one end of the refrigerating return air channel is communicated with the refrigerating chamber through a refrigerating chamber return air inlet, and the other end of the refrigerating return air channel is communicated with the lower part of the evaporator cavity;
the defrosting and humidifying system comprises a defrosting heater, a water receiving disc and a drain pipe; the defrosting heater is arranged at the bottom of the evaporator cavity; one end of the drain pipe is communicated with the bottom of the hair-dryer cavity, and the other end of the drain pipe is connected to a water receiving disc at the bottom of the refrigerator body;
a refrigerating chamber temperature sensor is arranged in the refrigerating chamber; an evaporator temperature sensor is arranged on the evaporator; the refrigerator main control board is fixed at the rear side of the refrigerator body; the refrigerator main control board respectively controls the switches of the compressor, the refrigerating fan, the electric air door and the defrosting heater; the refrigerating chamber temperature sensor transmits the monitored refrigerating chamber temperature to a main control board of the refrigerator; the evaporator temperature sensor transmits the monitored evaporator temperature to a main control board of the refrigerator.
A control method of a defrosting and humidifying device of an air-cooled refrigerator comprises the following pot processes: when defrosting is performed:
a00: the refrigerator main control board controls to open the defrosting heater and close the compressor, the refrigerating fan and the electric air door;
a01: the refrigerator main control board judges whether the temperature of the evaporator monitored by the evaporator temperature sensor is larger than a preset A value or not; if not, maintaining the A00 state; if yes, executing A02;
a02: the refrigerator main control board controls the opening of the refrigerating fan and the electric air door;
a03: the refrigerator main control board judges whether the temperature of the evaporator monitored by the evaporator temperature sensor is greater than a preset B value; if not, maintaining the A02 state; if yes, executing A04;
a04: the refrigerator main control board controls the refrigeration fan and the electric air door to be closed;
a05: the refrigerator main control board controls the defrosting heater to continuously heat;
a06: the refrigerator main control board judges whether the temperature of the evaporator monitored by the evaporator temperature sensor is larger than a preset C value; if yes, the refrigerator main control board controls the defrosting heater to be turned off; if not, the A05 state is maintained.
Preferably, the range of the preset A value is 0 to minus 5 ℃; the range of the preset B value is-1-15 ℃; the preset C value range is 1-20 ℃; the preset C value is larger than the preset B value and larger than the preset A value.
Preferably, a refrigerating chamber humidity sensor is also arranged in the refrigerating chamber and used for monitoring and transmitting a refrigerating chamber humidity value refrigerator main control board; at this time, a03 specifically includes the following:
the refrigerator main control board judges whether the temperature of the evaporator is larger than a preset B value or whether the humidity of the refrigerating chamber is larger than a preset D value; if not, maintaining the A02 state; if yes, executing A04;
wherein the preset D value is the upper limit value of the humidity which the refrigerating chamber wants to keep.
One aspect of the present invention has the following beneficial effects:
1. the invention utilizes the principle that the frost on the evaporator is converted into liquid state to absorb heat but the temperature is not changed; when the frost is melted, the main control board of the refrigerator controls the refrigerating fan to blow wet air generated by defrosting into the refrigerating chamber for humidification; by utilizing the forced convection method, high-humidity air is blown into the refrigerating chamber, the defrosting heating time is shortened, the average value of the relative humidity of a system in the single-system air-cooled refrigerator is increased from 40% to 80% at most during defrosting, and the fruit and vegetable fresh-keeping effect of the refrigerating chamber is greatly improved.
2. The invention is characterized in that a refrigerating chamber humidity sensor is arranged in a refrigerating chamber and is used for monitoring and transmitting a main control board of the refrigerator with a refrigerating chamber humidity value; when the main control board of the refrigerator judges that the temperature of the refrigerating chamber is greater than the preset D value, the main control board stops blowing high-humidity air into the refrigerating chamber, so that various relative humidity requirements of the refrigerating chamber are met, and the main control board is suitable for the relative humidity requirements of different foods in refrigeration.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a side cross-sectional view of an air-cooled moisturizing refrigerator of the present invention when closed;
fig. 2 is a schematic diagram of a front view direction of an air-cooled moisturizing refrigerator when the refrigerator is not closed;
FIG. 3 is a flow chart of a method of controlling a humidifying device of an air-cooled refrigerator according to the present invention;
FIG. 4 is a table showing absolute humidity versus relative humidity.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "open," "upper," "middle," "length," "inner," and the like indicate an orientation or a positional relationship, and are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1-2, the present invention is an air-cooled refrigerator defrosting and humidifying device, comprising: the refrigerator comprises a refrigerator body, a refrigerating chamber 1, a freezing chamber 2, a refrigerating system, an air circulation system and a defrosting and humidifying system;
the refrigeration system includes a compressor 31, an evaporator 32, a capillary tube, a filter, and a condenser; the compressor 31 is installed in the compressor chamber below the refrigerating chamber 1; the evaporator 32 is communicated with the compressor 31 and the evaporator 32 is installed in an evaporator cavity at the rear side of the refrigerating chamber 1;
the air circulation system comprises a freezing chamber air duct 21, a refrigerating chamber air duct 11 and a refrigerating return air duct 12; one end of the freezing chamber air duct 21 is communicated with the upper part of the evaporator cavity, and the other end is communicated with the refrigerating chamber air duct 11; a refrigerating fan 22 is arranged in the freezing chamber air duct 21; an electric air door 13 is arranged at the joint of the refrigerating return air duct 12 and the freezing chamber air duct 21; one end of the refrigerating return air channel 12 is communicated with the refrigerating chamber 1 through a refrigerating chamber return air inlet, and the other end is communicated with the lower part of the evaporator cavity; the specific use is as follows: the main control board of the refrigerator controls the compressor 31 and the refrigerating fan 22 to be opened, so that cold air is blown into the freezing chamber 2 for refrigeration; meanwhile, the main control board of the refrigerator controls cold air blowing and refrigeration to the refrigerating chamber through controlling the electric air door 13; since the evaporator 32 is at a low temperature, generally below-18 ℃ for a long time, the temperature is far lower than the temperature of the refrigerating chamber, and after cold air enters the refrigerating chamber 1 through the electric freezing chamber air duct 21 and the refrigerating chamber air duct 11, most of water vapor in the cold air is condensed into frost in the evaporator chamber, so that the relative humidity in the refrigerating chamber 1 is only 20-30%;
the defrosting and humidifying system comprises a defrosting heater 33, a water receiving disc 35 and a drain pipe 34; the defrosting heater 33 is arranged at the bottom of the evaporator cavity; one end of the drain pipe 34 is communicated with the bottom of the hair-dryer cavity, and the other end is connected to a water receiving disc 35 at the bottom of the refrigerator body; the specific use is as follows: the main control board 5 of the refrigerator controls the defrosting heater 33 to start, the evaporator 32 is defrosted after heating, the defrosted water is discharged out of the water receiving disc 35 of the refrigerator through the drain pipe 34, and a high-temperature drain pipe is arranged in the water receiving disc 35 and used for evaporating the defrosted water;
a refrigerating chamber temperature sensor 14 is arranged in the refrigerating chamber 1; the evaporator 32 is provided with an evaporator temperature sensor 36; the main control board 5 of the refrigerator is fixed at the rear side of the refrigerator body; the refrigerator main control board 5 controls the switch of the compressor 31, the refrigerating fan 22, the electric air door 13 and the defrosting heater 33 respectively; the refrigerating chamber temperature sensor 14 transmits the monitored refrigerating chamber temperature to the refrigerator main control board 5; the evaporator temperature sensor 36 transmits the monitored evaporator temperature to the refrigerator main control board 5.
Referring to fig. 3, a control method of a defrosting and humidifying device of an air-cooled refrigerator comprises the following pot processes: when defrosting is performed:
a00: the refrigerator main control board 5 controls to open the defrosting heater 33 and close the compressor 31, the refrigerating fan 22 and the electric air door 13;
a01: the refrigerator main control board 5 judges whether the evaporator temperature monitored by the evaporator temperature sensor 36 is greater than a preset A value; if not, maintaining the A00 state; if yes, executing A02;
a02: the refrigerator main control board 5 controls and opens the refrigerating fan 22 and the electric air door 13;
a03: the refrigerator main control board 5 judges whether the evaporator temperature monitored by the evaporator temperature sensor 36 is greater than a preset B value; if not, maintaining the A02 state; if yes, executing A04;
a04: the refrigerator main control board 5 controls and closes the refrigerating fan 22 and the electric air door 13;
a05: the main control board 5 of the refrigerator controls the defrosting heater 33 to continuously heat;
a06: the refrigerator main control board 5 judges whether the evaporator temperature monitored by the evaporator temperature sensor 36 is greater than a preset C value; if yes, the refrigerator main control board 5 controls the defrosting heater 33 to be turned off; if not, the A05 state is maintained.
Wherein the range of the preset A value is 0 to minus 5 ℃; the range of the preset B value is-1-15 ℃; the preset C value range is 1-20 ℃; the preset C value > the preset B value > the preset A value.
Wherein, a refrigerating chamber humidity sensor is also arranged in the refrigerating chamber 1 and used for monitoring and transmitting a main control board 5 of the refrigerator with the refrigerating chamber humidity value; at this time, a03 specifically includes the following:
the main control board 5 of the refrigerator judges whether the temperature of the refrigerating chamber is larger than a preset B value or whether the humidity of the refrigerating chamber is larger than a preset D value; if not, maintaining the A02 state; if yes, executing A04;
wherein the preset D value is the upper limit value of the humidity which the refrigerating chamber wants to keep;
the refrigerator main control board is used for monitoring and transmitting the humidity value of the refrigerating chamber by installing a refrigerating chamber humidity sensor in the refrigerating chamber; when the main control board of the refrigerator judges that the temperature of the refrigerating chamber is greater than the preset D value, the main control board stops blowing high-humidity air into the refrigerating chamber, so that various relative humidity requirements of the refrigerating chamber are met, and the main control board is suitable for the relative humidity requirements of different foods in refrigeration.
From the thermodynamic perspective, the temperature and absolute humidity determine the relative humidity of the space; wherein, the absolute humidity refers to how much water vapor is contained in the gas; relative humidity refers to the ratio of absolute humidity to the saturated water vapor content of the temperature expressed in percent. When the refrigerating chamber 1 of the common air-cooled single-system refrigerator is refrigerated, most of absolute humidity is brought to the low-temperature evaporator 32 to be condensed through air circulation; after stopping the cooling, the relative humidity rises slowly and the peak is low, resulting in too low average relative humidity.
It is known from the air conditioning theory that absolute humidity contained in the same relative humidity is different at different temperatures. The higher the temperature, the greater the absolute humidity in the air; as can be seen from the table in fig. 4, the humidity of the refrigerating chamber 1 is actually only supplemented with several grams of absolute humidity to humidify the refrigerating chamber;
suppose 1m at 5 DEG C 3 In the environment, when the relative humidity is about 70%, only 5.09g of water vapor is required to be added into the space. In the natural state, the air-cooled refrigerator cannot supplement enough water vapor into the refrigerating chamber through gaps such as door seals, rotating beams and the like. Therefore, aiming at the problem, the principle that the frost on the evaporator is converted into liquid state to absorb heat but the temperature is not changed is utilized; when the frost is melted, the main control board of the refrigerator controls the refrigerating fan to blow wet air generated by defrosting into the refrigerating chamber for humidification; by utilizing the forced convection method, high-humidity air is blown into the refrigerating chamber, the defrosting heating time is shortened, the average value of the relative humidity of a system in the single-system air-cooled refrigerator is increased from 40% to 80% at most during defrosting, and the fruit and vegetable fresh-keeping effect of the refrigerating chamber is greatly improved.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (3)
1. A control method of a defrosting and humidifying device of an air-cooled refrigerator, wherein the defrosting and humidifying device of the air-cooled refrigerator comprises the following steps: the refrigerator comprises a refrigerator body, a refrigerating chamber (1), a freezing chamber (2), a refrigerating system, an air circulating system and a defrosting and humidifying system;
the refrigeration system comprises a compressor (31), an evaporator (32), a capillary tube, a filter and a condenser; the compressor (31) is arranged in a compressor cavity below the refrigerating chamber (1); the evaporator (32) is communicated with the compressor (31), and the evaporator (32) is arranged in an evaporator cavity at the rear side of the freezing chamber (2);
the air circulation system comprises a freezing chamber air duct (21), a refrigerating chamber air duct (11) and a refrigerating return air duct (12); one end of the freezing chamber air duct (21) is communicated with the upper part of the evaporator cavity, and the other end of the freezing chamber air duct is communicated with the refrigerating chamber air duct (11); a refrigerating fan (22) is arranged in the freezing chamber air duct (21); an electric air door (13) is arranged at the joint of the cold storage air return duct (12) and the freezing chamber air duct (21); one end of the refrigerating return air channel (12) is communicated with the refrigerating chamber (1) through a refrigerating chamber return air inlet, and the other end of the refrigerating return air channel is communicated with the lower part of the evaporator cavity;
the defrosting and humidifying system comprises a defrosting heater (33), a water receiving disc (35) and a drain pipe (34); the defrosting heater (33) is arranged at the bottom of the evaporator cavity; one end of the drain pipe (34) is communicated with the bottom of the hair-dryer cavity, and the other end of the drain pipe is connected to a water receiving disc (35) at the bottom of the refrigerator body;
a refrigerating chamber temperature sensor (14) is arranged in the refrigerating chamber (1); an evaporator temperature sensor (36) is arranged on the evaporator (32); a main control board (5) of the refrigerator is fixed at the rear side of the refrigerator body; the refrigerator main control board (5) respectively controls the switch of the compressor (31), the refrigerating fan (22), the electric air door (13) and the defrosting heater (33); the refrigerating chamber temperature sensor (14) transmits the monitored refrigerating chamber temperature to the main control board (5) of the refrigerator; the evaporator temperature sensor (36) transmits the monitored evaporator temperature to the refrigerator main control board (5);
the method is characterized by comprising the following steps: when defrosting is performed:
a00: the refrigerator main control board (5) controls the defrosting heater (33) to be opened and the compressor (31), the refrigerating fan (22) and the electric air door (13) to be closed;
a01: the refrigerator main control board (5) judges whether the temperature of the evaporator monitored by the evaporator temperature sensor (36) is larger than a preset A value; if not, maintaining the A00 state; if yes, executing A02;
a02: the refrigerator main control board (5) controls the opening of the refrigerating fan (22) and the electric air door (13);
a03: the refrigerator main control board (5) judges whether the temperature of the evaporator monitored by the evaporator temperature sensor (36) is larger than a preset B value; if not, maintaining the A02 state; if yes, executing A04;
a04: the refrigerator main control board (5) controls the refrigeration fan (22) and the electric air door (13) to be closed;
a05: the refrigerator main control board (5) controls the defrosting heater (33) to continuously heat;
a06: the refrigerator main control board (5) judges whether the temperature of the evaporator monitored by the evaporator temperature sensor (36) is larger than a preset C value; if yes, the refrigerator main control board (5) controls the defrosting heater (33) to be turned off; if not, the A05 state is maintained.
2. The control method of a defrosting and humidifying device of an air-cooled refrigerator according to claim 1, wherein the range of the preset A value is 0-5 ℃; the range of the preset B value is-1-15 ℃; the preset C value range is 1-20 ℃; the preset C value is larger than the preset B value and larger than the preset A value.
3. The control method of the defrosting and humidifying device of the air-cooled refrigerator according to claim 1, wherein a refrigerating chamber humidity sensor is further arranged in the refrigerating chamber (1) and used for monitoring and transmitting a refrigerating chamber humidity value refrigerator main control board (5); at this time, a03 specifically includes the following:
the refrigerator main control board (5) judges whether the temperature of the evaporator is larger than a preset B value or whether the humidity of the refrigerating chamber is larger than a preset D value; if not, maintaining the A02 state; if yes, executing A04;
wherein the preset D value is the upper limit value of the humidity which the refrigerating chamber wants to keep.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910803186.7A CN110440502B (en) | 2019-08-28 | 2019-08-28 | Defrosting and humidifying device of air-cooled refrigerator and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910803186.7A CN110440502B (en) | 2019-08-28 | 2019-08-28 | Defrosting and humidifying device of air-cooled refrigerator and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110440502A CN110440502A (en) | 2019-11-12 |
| CN110440502B true CN110440502B (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910803186.7A Active CN110440502B (en) | 2019-08-28 | 2019-08-28 | Defrosting and humidifying device of air-cooled refrigerator and control method thereof |
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| CN110940135A (en) * | 2019-12-09 | 2020-03-31 | 珠海格力电器股份有限公司 | Refrigerator and defrosting detection device and defrosting control method thereof |
| CN111137564B (en) * | 2019-12-25 | 2021-10-19 | 华南农业大学 | Frost prevention system for cold storage plate for fresh-keeping transport case and control method |
| CN111486634A (en) * | 2020-04-03 | 2020-08-04 | 合肥华凌股份有限公司 | Refrigeration equipment, control method thereof and computer readable storage medium |
| CN112393492A (en) * | 2020-11-25 | 2021-02-23 | 珠海格力电器股份有限公司 | Humidity control method for refrigerating chamber and refrigerator |
| CN113983753A (en) * | 2021-10-08 | 2022-01-28 | 珠海格力电器股份有限公司 | Food material fresh-keeping control method and device and refrigeration equipment |
| CN116499173A (en) * | 2022-01-19 | 2023-07-28 | 青岛海尔电冰箱有限公司 | Refrigerating and freezing device and control method thereof |
| CN114674101A (en) * | 2022-02-24 | 2022-06-28 | 珠海格力电器股份有限公司 | Refrigerator and humidity adjusting method |
| CN114992973A (en) * | 2022-06-02 | 2022-09-02 | 海信（山东）冰箱有限公司 | Method, device, equipment and medium for controlling maturation zone of refrigerator |
| CN115111844B (en) * | 2022-06-30 | 2023-11-07 | 海信冰箱有限公司 | Refrigerator with a refrigerator body |
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