CN116817528A - Air-cooled refrigerator and humidity control method and control device for freezing compartment of air-cooled refrigerator - Google Patents

Air-cooled refrigerator and humidity control method and control device for freezing compartment of air-cooled refrigerator Download PDF

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Publication number
CN116817528A
CN116817528A CN202210288843.0A CN202210288843A CN116817528A CN 116817528 A CN116817528 A CN 116817528A CN 202210288843 A CN202210288843 A CN 202210288843A CN 116817528 A CN116817528 A CN 116817528A
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CN
China
Prior art keywords
temperature
evaporator
air
refrigerant
compressor
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.)
Pending
Application number
CN202210288843.0A
Other languages
Chinese (zh)
Inventor
王睿龙
崔展鹏
张振兴
孙皓
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.)
Qingdao Haier Refrigerator Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Refrigerator Co Ltd
Haier Smart Home 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 Qingdao Haier Refrigerator Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Refrigerator Co Ltd
Priority to CN202210288843.0A priority Critical patent/CN116817528A/en
Publication of CN116817528A publication Critical patent/CN116817528A/en
Pending legal-status Critical Current

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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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/003—Arrangement or mounting of control or safety devices for movable devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/005—Mounting of control devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

The invention provides an air-cooled refrigerator and a humidity control method and a control device of a freezing compartment of the air-cooled refrigerator, wherein the method comprises the following steps: controlling the compressor to operate at a first rotational speed such that a temperature of refrigerant flowing in the evaporator module is lower than a temperature of air in the freezer compartment, the evaporator module at least partially frosting; controlling the compressor to operate at a second rotational speed to raise a temperature of the refrigerant flowing in the evaporator module to sublimate frost of the evaporator module to humidify the freezing compartment, wherein the second rotational speed is less than the first rotational speed. The humidity control method of the freezing compartment of the air-cooled refrigerator can effectively improve the humidity of the freezing compartment so as to reduce the food material dry consumption and enhance the fresh-keeping capability of the refrigerator.

Description

Air-cooled refrigerator and humidity control method and control device for freezing compartment of air-cooled refrigerator
Technical Field
The invention relates to the technical field of refrigeration and freezing devices, in particular to an air-cooled refrigerator and a humidity control method and a humidity control device of a freezing compartment of the air-cooled refrigerator.
Background
When the air-cooled refrigerator is used for refrigerating, air is circulated, moisture in the air of the freezing chamber can frost on the evaporator, and then dry cold air is blown out, so that the air of the freezing chamber is kept dry for a period of time. Because the air-cooled refrigerator can form dry cold air of direct blowing when refrigerating, most users can use the plastic bag to pack food materials, but in the process that users find food materials, the plastic bag can be opened or damaged, so that the dry cold air directly blows the food materials, serious dry consumption is caused on the food materials, and the freshness preservation of the food materials is affected.
Disclosure of Invention
The invention aims to provide a humidity control method for a freezing compartment of an air-cooled refrigerator, which can effectively improve the humidity of the freezing compartment to reduce food material dry consumption and enhance the fresh-keeping capability of the refrigerator.
A further object of the invention is to make the humidification step of the freezer compartment simple and quick.
In particular, the invention provides a humidity control method for a freezing compartment of an air-cooled refrigerator, a refrigerating system of the air-cooled refrigerator comprises a compressor and an evaporator module, and air in the freezing compartment exchanges heat with the evaporator module, and the method comprises the following steps:
controlling the compressor to operate at a first rotational speed such that the temperature of the refrigerant flowing in the evaporator module is less than the temperature of the air in the freezer compartment, the evaporator module at least partially frosting;
the compressor is controlled to operate at a second rotational speed to raise the temperature of the refrigerant flowing in the evaporator module to sublimate frost of the evaporator module to humidify the freezer compartment, wherein the second rotational speed is less than the first rotational speed.
Optionally, the step of controlling the compressor to operate at the first rotational speed is preceded by the step of:
judging whether the temperature of the air in the freezing compartment reaches the starting temperature of the compartment or not;
if yes, the compressor is controlled to operate at a first rotational speed.
Optionally, the step of controlling the compressor to operate at the first rotational speed such that the temperature of the refrigerant flowing in the evaporator module is lower than the temperature of the air of the freezing compartment comprises:
the compressor is controlled to operate at a first rotational speed such that an absolute value of a difference between a temperature of the refrigerant flowing in the evaporator module and a target temperature of the compartment is not less than a preset difference threshold.
Optionally, the step of controlling the compressor to operate at the second rotational speed further comprises, prior to:
judging whether the temperature of the air in the freezing compartment reaches the target compartment temperature;
if yes, the compressor is controlled to operate at the second rotating speed.
Optionally, the step of controlling the compressor to operate at the second rotational speed to raise the temperature of the refrigerant flowing in the evaporator module includes:
the compressor is controlled to operate at a second rotational speed to raise the temperature of the refrigerant flowing in the evaporator module to a compartment target temperature.
Optionally, the evaporator module has a single refrigerant flow path; the method comprises the following steps:
controlling the compressor to operate at a first rotational speed to cause the temperature of the refrigerant of the evaporator module to be lower than the temperature of the air of the refrigerated compartment, the evaporator module frosting;
the compressor is controlled to operate at a second rotational speed to raise the temperature of the refrigerant of the evaporator module to sublimate frost of the evaporator module to humidify the freezer compartment.
Optionally, the evaporator module comprises a first evaporator and a second evaporator which are arranged in parallel, the first evaporator and the second evaporator are arranged in an evaporator chamber, and the evaporator chamber is communicated with the freezing chamber; the method comprises the following steps:
controlling the compressor to operate at a first rotational speed, wherein the refrigerant flow path of the first evaporator is conducted, and the refrigerant flow path of the second evaporator is disconnected, so that the temperature of the refrigerant of the first evaporator is lower than the temperature of air in the freezing compartment, and the first evaporator frosts;
the compressor is controlled to operate at a second rotational speed, and the refrigerant flow path of the first evaporator is disconnected and the refrigerant flow path of the second evaporator is conducted, so that the temperature of the refrigerant of the second evaporator is increased to sublimate frost of the first evaporator, and the freezing compartment is humidified.
Optionally, the evaporator module has a first refrigerant line and a second refrigerant line arranged in parallel; the method comprises the following steps:
controlling the compressor to run at a first rotational speed, and switching on the first refrigerant pipeline and switching off the second refrigerant pipeline to enable the temperature of the refrigerant in the first refrigerant pipeline to be lower than the temperature of air in the freezing compartment, wherein the first refrigerant pipeline frosts;
the compressor is controlled to operate at a second rotating speed, the first refrigerant pipeline is disconnected, the second refrigerant pipeline is conducted, and the temperature of the refrigerant in the second refrigerant pipeline is increased to sublimate frost in the first refrigerant pipeline so as to humidify the freezing compartment.
The invention also provides a control device of the air-cooled refrigerator, which is provided with a memory and a processor, wherein a machine executable program is stored in the memory, and when the machine executable program is executed by the processor, the control device is used for realizing the humidity control method of the freezing compartment of the air-cooled refrigerator.
The invention also provides an air-cooled refrigerator with the control device.
According to the humidity control method for the freezing compartment of the air-cooled refrigerator, the temperature of the refrigerant flowing in the evaporator module is lower than the temperature of the air in the freezing compartment by controlling the compressor to operate at the first rotating speed, so that the evaporator module is at least partially frosted, the compressor is controlled to operate at the second rotating speed which is lower than the first rotating speed, the temperature of the refrigerant flowing in the evaporator module is increased, the evaporator is modularized into frost, the frost of the evaporator module sublimates into the air, the air flowing into the freezing compartment is high-humidity air, the humidity of the freezing compartment can be effectively improved, the food material dry consumption is reduced, and the fresh-keeping capability of the refrigerator is enhanced. Meanwhile, the humidity control method of the freezing compartment of the air-cooled refrigerator can rapidly improve the humidity of the freezing compartment only by controlling the compressor and the evaporator module, does not need to additionally add a humidifying part, and effectively reduces the cost.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
fig. 1 is a schematic view of a structure of an air-cooled refrigerator according to an embodiment of the present invention.
Fig. 2 is a flow chart illustrating a humidity control method of a freezing compartment of the air-cooled refrigerator shown in fig. 1.
Fig. 3 is a block diagram showing a part of components of the air-cooled refrigerator shown in fig. 1.
Fig. 4 is a detailed flowchart of a humidity control method of a freezing compartment of the air-cooled refrigerator shown in fig. 1.
Fig. 5 is a block diagram illustrating a configuration of a refrigerating system of an air-cooled refrigerator according to an embodiment of the present invention.
Fig. 6 is a block diagram illustrating a construction of a refrigerating system of an air-cooled refrigerator according to another embodiment of the present invention.
Fig. 7 is a block diagram illustrating a construction of a refrigerating system of an air-cooled refrigerator according to still another embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic structural view of an air-cooled refrigerator 100 according to an embodiment of the present invention. Fig. 2 is a flowchart illustrating a humidity control method of the freezing compartment 112 of the air-cooled refrigerator 100 shown in fig. 1. Fig. 3 is a block diagram showing a part of components of the air-cooled refrigerator 100 shown in fig. 1.
The air-cooled refrigerator 100 according to the embodiment of the present invention is a storage device including a refrigeration system, and generally includes a case 101, a door 102, and a refrigeration system.
The case 101 is constituted by a housing, an inner container, a heat insulating layer between the housing and the inner container, and the like. The inner container of the case 101 defines at least one storage compartment having an open front side. The storage compartments are typically multiple, such as a refrigerated compartment 111, a freezer compartment 112, a temperature change compartment, and the like. The number and function of particular storage compartments may be configured according to the needs in advance. In some embodiments, the preservation temperature of the refrigerated compartment 111 may be 2-9 ℃, or may be 4-7 ℃; the storage temperature of the freezer compartment 112 may be-22 to-14 ℃, or may be-20 to-16 ℃. As shown in fig. 1, the refrigerating compartment 112 is provided below the refrigerating compartment 111. The door 102 is pivotally disposed at a front side of the storage compartment.
The refrigeration system may be a refrigeration cycle system composed of a compressor 201, a condenser 202, a throttle device, an evaporator module 203, and the like. The working principle of the refrigerating system is as follows: the compressor 201 is driven by a motor as power of the refrigeration cycle to continuously rotate, thereby compressing the low-temperature low-pressure refrigerant vapor to a high-temperature high-pressure state. The condenser 202 is a heat exchange device that uses an ambient cooling refrigerant to remove heat from the high-temperature and high-pressure refrigerant vapor from the compressor 201, thereby cooling and condensing the high-temperature and high-pressure refrigerant vapor into a high-pressure and normal-temperature refrigerant liquid. The refrigerant liquid with high pressure and normal temperature passes through the throttling device to obtain low-temperature and low-pressure refrigerant, and then the low-temperature and low-pressure refrigerant is sent into the evaporator module 203 to absorb heat and evaporate. The evaporator module 203 serves as another heat exchange device, and the throttled low-temperature low-pressure refrigerant liquid evaporates therein to become vapor, absorbs ambient heat, and reduces the ambient temperature for refrigeration purposes. As shown in fig. 1, the refrigerator body 101 of the freezing compartment 112 of the air-cooled refrigerator 100 is also provided with an evaporator chamber 113, the evaporator chamber 113 is communicated with the freezing compartment 112 through an air outlet 114 and an air return 115, an evaporator module 203 is arranged in the evaporator chamber 113, and a fan 104 is arranged at the air outlet 114 so as to circularly refrigerate the freezing compartment 112. A press housing 103 is formed at the rear side of the lower portion of the casing 101, and a compressor 201 and a condenser 202 are provided in the press housing 103.
As shown in fig. 2, the humidity control method for the freezing compartment 112 of the air-cooled refrigerator 100 according to the embodiment of the invention includes the following steps:
s102: controlling the compressor 201 to operate at a first rotational speed such that the temperature of the refrigerant flowing in the evaporator module 203 is lower than the temperature of the air in the freezer compartment 112, the evaporator module 203 at least partially frosting;
s104: the compressor 201 is controlled to operate at a second rotational speed, which is less than the first rotational speed, to raise the temperature of the refrigerant flowing in the evaporator module 203 to sublimate frost of the evaporator module 203 to humidify the freezer compartment 112.
According to the humidity control method for the freezing compartment 112 of the air-cooled refrigerator 100, the temperature of the refrigerant flowing in the evaporator module 203 is lower than the temperature of the air in the freezing compartment 112 by controlling the compressor 201 to operate at the first rotating speed, so that the evaporator module 203 is at least partially frosted, then the compressor 201 is controlled to operate at the second rotating speed which is lower than the first rotating speed, so that the temperature of the refrigerant flowing in the evaporator module 203 is increased, the evaporator module 203 is frosted, the frost of the evaporator module 203 sublimates into the air, the air flowing into the freezing compartment 112 is high-humidity air, the humidity of the freezing compartment 112 can be effectively improved, the food dry consumption is reduced, and the fresh-keeping capability of the refrigerator 100 is enhanced. Meanwhile, the humidity control method of the freezing compartment 112 of the air-cooled refrigerator 100 can rapidly raise the humidity of the freezing compartment 112 only by controlling the compressor 201 and the evaporator module 203, and does not need to additionally add a humidifying part, thereby effectively reducing the cost.
As shown in fig. 3, the air-cooled refrigerator 100 according to the embodiment of the present invention further includes a control device 400 having a memory 401 and a processor 402, wherein the memory 401 stores a machine executable program 410, and when the machine executable program 410 is executed by the processor 402, the control device is used to implement the foregoing humidity control method of the freezing compartment 112 of the air-cooled refrigerator 100. The temperature of the air in the freezer compartment 112 may be obtained by a temperature sensor 105 provided at the duct cover.
In some embodiments, in the humidity control method for the freezing compartment 112 of the air-cooled refrigerator 100 according to the embodiment of the present invention, before the step of controlling the compressor 201 to operate at the first rotational speed, the method further includes:
judging whether the temperature of the air of the freezing compartment 112 reaches the compartment starting temperature;
if so, the compressor 201 is controlled to operate at a first rotational speed.
When the measured temperature of the air in the refrigerated compartment 112 reaches the compartment start-up temperature of the refrigerated compartment 112, refrigeration begins and the compressor 201, blower 104, operate to cool the refrigerated compartment 112. At this time, the compressor 201 is controlled to operate at the first rotational speed, and the refrigerating compartment 112 may be refrigerated while the evaporator module 203 is at least partially frosted.
In some embodiments, in the humidity control method of the freezing compartment 112 of the air-cooled refrigerator 100 according to the embodiment of the present invention, the step of controlling the compressor 201 to operate at the first rotational speed such that the temperature of the refrigerant flowing in the evaporator module 203 is lower than the temperature of the air of the freezing compartment 112 includes:
the compressor 201 is controlled to operate at a first rotational speed such that the absolute value of the difference between the temperature of the refrigerant flowing in the evaporator module 203 and the target temperature of the compartment is not less than a preset difference threshold.
The compartment start-up temperature of the freezer compartment 112 may be, for example, -16 ℃, -15 ℃. The target temperature of the refrigerated compartment 112 is lower than the start-up temperature of the refrigerated compartment 112, which may be, for example, -18 ℃ and-19 ℃. The preset difference threshold may be, for example, 5-7 ℃. The compressor 201 is controlled to operate at a first rotational speed such that the temperature of the refrigerant flowing in the evaporator module 203 is, for example, -23 ℃ - (-25 ℃). By making the absolute value of the difference between the temperature of the refrigerant flowing in the evaporator module 203 and the compartment target temperature not smaller than the preset difference threshold value, it is possible to ensure that a large amount of frost is formed at the evaporator module 203 when the air of the freezing compartment 112 passes through the evaporator module 203.
In some embodiments, in the method for controlling humidity of the freezing compartment 112 of the air-cooled refrigerator 100 according to the embodiment of the present invention, before the step of controlling the compressor 201 to operate at the second rotation speed, the method further includes:
judging whether the temperature of the air of the freezing compartment 112 reaches the compartment target temperature;
if so, the compressor 201 is controlled to operate at the second rotational speed.
When the temperature of the air in the freezing compartment 112 reaches the compartment target temperature, the rotation speed of the compressor 201 is adjusted to defrost and humidify, and the freezing effect of the freezing compartment 112 can be ensured while humidifying.
In some embodiments, in the humidity control method of the freezing compartment 112 of the air-cooled refrigerator 100 according to the embodiment of the present invention, the step of controlling the compressor 201 to operate at the second rotation speed to raise the temperature of the refrigerant flowing in the evaporator module 203 includes:
the compressor 201 is controlled to operate at the second rotational speed so that the temperature of the refrigerant flowing in the evaporator module 203 is increased to the compartment target temperature.
By raising the temperature of the refrigerant flowing in the evaporator module 203 to the compartment target temperature, the temperature of the freezing compartment 112 can be ensured while defrosting the evaporator module 203 with the air of the freezing compartment 112.
Fig. 4 is a detailed flowchart of a humidity control method of the freezing compartment 112 of the air-cooled refrigerator 100 shown in fig. 1. The humidity control method of the freezing compartment 112 of the air-cooled refrigerator 100 according to the embodiment of the invention comprises the following steps:
s202: it is determined whether the temperature of the air in the refrigerated compartment 112 has reached the compartment start-up temperature. When the determination result of step S202 is yes, step S204 is performed.
S204: the compressor 201 is controlled to operate at a first rotational speed such that the absolute value of the difference between the temperature of the refrigerant flowing in the evaporator module 203 and the target temperature of the compartment is not less than a preset difference threshold.
S206: it is determined whether the temperature of the air in the refrigerated compartment 112 has reached a compartment target temperature. When the determination result of step S206 is yes, step S208 is performed.
S208: the compressor 201 is controlled to operate at the second rotational speed so that the temperature of the refrigerant flowing in the evaporator module 203 is increased to the compartment target temperature.
Fig. 5 is a block diagram illustrating a configuration of a refrigerating system of the air-cooled refrigerator 100 according to an embodiment of the present invention. In the embodiment shown in fig. 5, the evaporator module 203 has a single refrigerant flow path. The humidity control method of the freezing compartment 112 of the air-cooled refrigerator 100 according to the embodiment of the invention comprises the following steps:
controlling the compressor 201 to operate at a first rotational speed such that the temperature of the refrigerant of the evaporator module 203 is lower than the temperature of the air of the freezer compartment 112, the evaporator module 203 frosting;
the compressor 201 is controlled to operate at a second rotational speed to raise the temperature of the refrigerant of the evaporator module 203 to sublimate frost of the evaporator module 203 to humidify the freezer compartment 112.
Assuming that the chamber start-up temperature is-16 ℃, the chamber target temperature is-18 ℃, and the chamber shut-down temperature is-20 ℃. When the temperature of the refrigerated compartment 112 is detected to be-16 ℃, i.e., the temperature of the air in the refrigerated compartment 112 reaches the compartment start-up temperature, refrigeration begins and the blower 104 is operated. The compressor 201 is controlled to operate at a first rotational speed and the temperature of the refrigerant in the evaporator module 203 is-25 deg.c. The air in the freezing compartment 112 passes through the evaporator module 203, and a large amount of frost is formed in the evaporator module 203, and the dried air is blown out, so that the temperature and humidity of the freezing compartment 112 are lowered. When the temperature of the air cooled to the freezing compartment 112 is-18 ℃, i.e., the temperature of the air in the freezing compartment 112 reaches the compartment target temperature, the rotation speed of the compressor 201 is controlled to be reduced, the air in the evaporator module 203 is operated at the second rotation speed, the temperature of the refrigerant in the evaporator module 203 is-18 ℃, the air at-18 ℃ passes through the evaporator module 203, frost at-25 ℃ on the evaporator module 203 absorbs the heat of the refrigerant and the air, the temperature is increased and sublimates into the air, the air with high humidity is blown out, and the humidity of the freezing compartment 112 is rapidly increased. After the chamber shutdown temperature of-20 ℃ is reached, the compressor 201 and the blower 104 are controlled to be turned off.
Fig. 6 is a block diagram illustrating a configuration of a refrigerating system of an air-cooled refrigerator 100 according to another embodiment of the present invention. In the embodiment shown in fig. 6, the evaporator module 203 includes a first evaporator 251 and a second evaporator 252 disposed in parallel, the first evaporator 251 and the second evaporator 252 disposed within the evaporator chamber 113, the evaporator chamber 113 being in communication with the freezer compartment 112. The humidity control method of the freezing compartment 112 of the air-cooled refrigerator 100 according to the embodiment of the invention comprises the following steps:
the compressor 201 is controlled to operate at a first rotational speed, and the refrigerant flow path of the first evaporator 251 is turned on and the refrigerant flow path of the second evaporator 252 is turned off, so that the temperature of the refrigerant of the first evaporator 251 is lower than the temperature of the air of the freezing compartment 112, and the first evaporator 251 frosts;
the compressor 201 is controlled to operate at the second rotation speed, and the refrigerant flow path of the first evaporator 251 is opened and the refrigerant flow path of the second evaporator 252 is closed, so that the temperature of the refrigerant of the second evaporator 252 is increased to sublimate the frost of the first evaporator 251, thereby humidifying the refrigerating compartment 112.
The first evaporator 251 and the second evaporator 252 may be disposed in parallel up and down, and a switching valve 204 is provided at an inlet end. Assuming that the chamber start-up temperature is-16 ℃, the chamber target temperature is-19 ℃, and the chamber shut-down temperature is-20 ℃. When the temperature of the freezer compartment 112 is detected to be-16 ℃, refrigeration begins and the blower 104 is operated. The compressor 201 is controlled to operate at a first rotational speed, the refrigerant flow path of the first evaporator 251 is on, the refrigerant flow path of the second evaporator 252 is off, and the refrigerant is taken from the first evaporator 251. The temperature of the refrigerant in the first evaporator 251 is-25 deg.c. The air in the freezing compartment 112 passes through the first evaporator 251, a large amount of frost is formed in the first evaporator 251, and the dried air is blown out, so that the temperature and humidity of the freezing compartment 112 are lowered. The second evaporator 252 is at a temperature consistent with the freezing compartment 112, and air in the freezing compartment 112 passes through the second evaporator 252 without frosting on the second evaporator 252. When the temperature of the refrigerating compartment 112 is-19 ℃, the rotation speed of the compressor 201 is controlled to be reduced, the operation is performed at the second rotation speed, the temperature of the refrigerant is-19 ℃, the first evaporator 251 is closed, and the second evaporator 252 is opened. The second evaporator 252 is at the same temperature as the freezer compartment 112 without frosting. The air of-19 ℃ passes through the first evaporator 251, the frost of-25 ℃ on the first evaporator 251 absorbs heat to rise in temperature, sublimates into air, blows out high humidity air, and rapidly increases the humidity of the freezer compartment 112.
Fig. 7 is a block diagram illustrating a configuration of a refrigerating system of an air-cooled refrigerator 100 according to still another embodiment of the present invention. In the embodiment shown in fig. 7, the evaporator module 203 has a first refrigerant line 261 and a second refrigerant line 262 arranged in parallel. The humidity control method of the freezing compartment 112 of the air-cooled refrigerator 100 according to the embodiment of the invention comprises the following steps:
the compressor 201 is controlled to operate at a first rotational speed, and the first refrigerant line 261 is turned on and the second refrigerant line 262 is turned off, so that the temperature of the refrigerant of the first refrigerant line 261 is lower than the temperature of the air of the freezing compartment 112, and the first refrigerant line 261 is frosted;
the compressor 201 is controlled to operate at the second rotation speed, and the first refrigerant line 261 is opened and the second refrigerant line 262 is closed, so that the temperature of the refrigerant in the second refrigerant line 262 is increased to sublimate frost in the first refrigerant line 261, thereby humidifying the refrigerating compartment 112.
The first refrigerant line 261 and the second refrigerant line 262 may be disposed in parallel up and down, and the switching valve 204 is disposed at an inlet end. Assuming that the chamber start-up temperature is-16 ℃, the chamber target temperature is-19 ℃, and the chamber shut-down temperature is-20 ℃. When the temperature of the freezer compartment 112 is detected to be-16 ℃, refrigeration begins and the blower 104 is operated. The compressor 201 is controlled to operate at a first rotational speed, the first refrigerant line 261 is turned on, the second refrigerant line 262 is turned off, and the refrigerant is taken from the first refrigerant line 261. The temperature of the refrigerant in the first refrigerant line 261 is-25 deg.c. The air in the refrigerating compartment 112 passes through the first refrigerant line 261, and a large amount of frost is formed in the first refrigerant line 261, and the dried air is blown out, whereby the temperature and humidity of the refrigerating compartment 112 are reduced. The second refrigerant line 262 is at the same temperature as the freezer compartment 112, and air in the freezer compartment 112 passes through the second refrigerant line 262 without frosting the second refrigerant line 262. When the temperature of the refrigerating compartment 112 is-19 ℃, the rotation speed of the compressor 201 is controlled to be reduced, the compressor is operated at the second rotation speed, the temperature of the refrigerant is-19 ℃, the first refrigerant line 261 is disconnected, and the second refrigerant line 262 is connected. The second refrigerant line 262 is at the same temperature as the freezer compartment 112 without frosting. The air at-19 ℃ passes through the first refrigerant line 261, and the frost at-25 ℃ on the first refrigerant line 261 absorbs heat to rise in temperature, sublimate into the air, blow out the air with high humidity, and rapidly raise the humidity of the freezing compartment 112.
In the description of the present embodiment, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in fig. 1, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. A humidity control method of a freezing compartment of an air-cooled refrigerator, a refrigerating system of the air-cooled refrigerator including a compressor and an evaporator module, air of the freezing compartment being heat-exchanged with the evaporator module, the method comprising:
controlling the compressor to operate at a first rotational speed such that a temperature of refrigerant flowing in the evaporator module is lower than a temperature of air in the freezer compartment, the evaporator module at least partially frosting;
controlling the compressor to operate at a second rotational speed to raise a temperature of the refrigerant flowing in the evaporator module to sublimate frost of the evaporator module to humidify the freezing compartment, wherein the second rotational speed is less than the first rotational speed.
2. The method of claim 1, wherein the step of controlling the compressor to operate at a first rotational speed is preceded by the step of:
judging whether the temperature of the air in the freezing compartment reaches the starting temperature of the compartment or not;
if so, controlling the compressor to operate at the first rotational speed.
3. The method of claim 2, wherein the step of controlling the compressor to operate at a first rotational speed such that the temperature of the refrigerant flowing in the evaporator module is lower than the temperature of the air of the freezer compartment comprises:
and controlling the compressor to operate at the first rotation speed, so that the absolute value of the difference between the temperature of the refrigerant flowing in the evaporator module and the target temperature of the compartment is not smaller than a preset difference threshold.
4. The method of claim 1, wherein the step of controlling the compressor to operate at a second rotational speed is preceded by the step of:
judging whether the temperature of the air in the freezing compartment reaches a compartment target temperature;
if so, controlling the compressor to operate at the second rotating speed.
5. The method of claim 4, wherein the step of controlling the compressor to operate at a second rotational speed to raise the temperature of the refrigerant flowing in the evaporator module comprises:
the compressor is controlled to operate at the second rotational speed to raise the temperature of the refrigerant flowing in the evaporator module to the compartment target temperature.
6. The method of claim 1, wherein the evaporator module has a single refrigerant flow path; the method comprises the following steps:
controlling the compressor to operate at the first rotational speed such that the temperature of the refrigerant of the evaporator module is lower than the temperature of the air of the freezer compartment, the evaporator module frosting;
and controlling the compressor to operate at the second rotating speed, and increasing the temperature of the refrigerant of the evaporator module to sublimate frost of the evaporator module so as to humidify the freezing compartment.
7. The method of claim 1, wherein the evaporator module comprises a first evaporator and a second evaporator disposed in parallel, the first evaporator and the second evaporator disposed within an evaporator chamber, the evaporator chamber in communication with the freezer compartment; the method comprises the following steps:
controlling the compressor to operate at the first rotational speed, wherein a refrigerant flow path of the first evaporator is conducted, and a refrigerant flow path of the second evaporator is disconnected, so that the temperature of the refrigerant of the first evaporator is lower than the temperature of air in the freezing compartment, and the first evaporator frosts;
and controlling the compressor to operate at the second rotating speed, wherein the refrigerant flow path of the first evaporator is disconnected, the refrigerant flow path of the second evaporator is conducted, and the temperature of the refrigerant of the second evaporator is increased to sublimate the frost of the first evaporator so as to humidify the freezing compartment.
8. The method of claim 1, wherein the evaporator module has a first refrigerant line and a second refrigerant line disposed in parallel; the method comprises the following steps:
controlling the compressor to run at the first rotational speed, wherein the first refrigerant pipeline is conducted, the second refrigerant pipeline is disconnected, the temperature of the refrigerant in the first refrigerant pipeline is lower than the temperature of the air in the freezing compartment, and the first refrigerant pipeline frosts;
and controlling the compressor to run at the second rotating speed, and enabling the first refrigerant pipeline to be disconnected and the second refrigerant pipeline to be conducted, so that the temperature of the refrigerant in the second refrigerant pipeline is increased to sublimate frost in the first refrigerant pipeline, and the freezing compartment is humidified.
9. A control device of an air-cooled refrigerator, having a memory and a processor, wherein a machine executable program is stored in the memory, and when the machine executable program is executed by the processor, the machine executable program is used for realizing the humidity control method of a freezing compartment of the air-cooled refrigerator according to any one of claims 1-8.
10. An air-cooled refrigerator having the control device according to claim 9.
CN202210288843.0A 2022-03-22 2022-03-22 Air-cooled refrigerator and humidity control method and control device for freezing compartment of air-cooled refrigerator Pending CN116817528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210288843.0A CN116817528A (en) 2022-03-22 2022-03-22 Air-cooled refrigerator and humidity control method and control device for freezing compartment of air-cooled refrigerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210288843.0A CN116817528A (en) 2022-03-22 2022-03-22 Air-cooled refrigerator and humidity control method and control device for freezing compartment of air-cooled refrigerator

Publications (1)

Publication Number Publication Date
CN116817528A true CN116817528A (en) 2023-09-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210288843.0A Pending CN116817528A (en) 2022-03-22 2022-03-22 Air-cooled refrigerator and humidity control method and control device for freezing compartment of air-cooled refrigerator

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Country Link
CN (1) CN116817528A (en)

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