CN115371328A - Refrigeration equipment and steady-state control method and device thereof - Google Patents

Refrigeration equipment and steady-state control method and device thereof Download PDF

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Publication number
CN115371328A
CN115371328A CN202110542013.1A CN202110542013A CN115371328A CN 115371328 A CN115371328 A CN 115371328A CN 202110542013 A CN202110542013 A CN 202110542013A CN 115371328 A CN115371328 A CN 115371328A
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China
Prior art keywords
compartment
opening degree
temperature
fluctuation value
adjusting
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Granted
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CN202110542013.1A
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Chinese (zh)
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CN115371328B (en
Inventor
王晋东
高志谦
李伟
王一鸣
文佳佳
李智强
逯兆栋
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Hefei Hualing Co Ltd
Midea Group Co Ltd
Hefei Midea Refrigerator Co Ltd
Original Assignee
Hefei Hualing Co Ltd
Midea Group Co Ltd
Hefei Midea Refrigerator Co Ltd
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Priority to CN202110542013.1A priority Critical patent/CN115371328B/en
Publication of CN115371328A publication Critical patent/CN115371328A/en
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Publication of CN115371328B publication Critical patent/CN115371328B/en
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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
    • 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
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature
    • 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
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention provides a refrigeration device and a steady-state control method and device thereof. The steady-state control method comprises the steps of adjusting the opening degree of the electronic expansion valve to a preset opening degree based on the environment temperature and the compartment target temperature; and adjusting the preset opening degree to the adjusting opening degree based on the fluctuation value of the actual temperature of the compartment. According to the steady-state control method, the fluctuation values of the environment temperature and the compartment actual temperature are detected through the sensors, and the opening degree of the electronic expansion valve is adjusted through the controller based on the fluctuation value of the compartment actual temperature, so that the flow rate of a refrigerant in the refrigeration equipment is constant, and the refrigeration equipment can be stably maintained to operate in a steady state. In addition, the steady-state control method of the refrigeration equipment does not change the refrigeration equipment at all, can stably control the temperature of all temperature threshold ranges in a normal refrigeration range, and reduces the temperature fluctuation in the compartment. In addition, the steady-state control method of the refrigeration equipment also has the advantages of simple control logic, strong operability, wide application range and the like.

Description

Refrigeration equipment and steady-state control method and device thereof
Technical Field
The invention relates to the technical field of temperature control, in particular to a refrigerating device and a steady-state control method and device thereof.
Background
Existing refrigeration equipment, such as a refrigerator, can be divided into a single-cycle mode and a multi-cycle mode, and regardless of the cycle, the refrigerating temperature in the compartment is controlled by starting and stopping the compressor, but the temperature fluctuation in the compartment is easy to be large, so that the refrigerator is difficult to ensure to operate in a steady state.
Disclosure of Invention
The present invention has been made to solve at least one of the problems occurring in the related art. Therefore, the invention provides a steady-state control method of refrigeration equipment, which can realize steady-state operation of the refrigeration equipment.
The embodiment of the invention also provides a steady-state control device of the refrigeration equipment.
The embodiment of the invention also provides the refrigerating equipment.
The embodiment of the invention also provides the electronic equipment.
The embodiment of the invention also provides a non-transitory computer readable storage medium.
According to a first aspect of the invention, the steady-state control method for the refrigeration equipment comprises the following steps:
adjusting the opening degree of the electronic expansion valve to a preset opening degree based on the environment temperature and the compartment target temperature;
and adjusting the preset opening degree to an adjusting opening degree based on the fluctuation value of the actual temperature of the compartment.
According to the steady-state control method of the refrigeration equipment provided by the embodiment of the first aspect of the invention, the ambient temperature of the position where the refrigeration equipment is located can be detected through the sensor of the refrigeration equipment, meanwhile, the fluctuation value of the actual temperature of the compartment of the refrigeration equipment can be obtained through the sensor, and then the opening degree of the electronic expansion valve can be adjusted through the controller of the refrigeration equipment based on the fluctuation value of the actual temperature of the compartment, so that the flow rate of the refrigerant in the refrigeration equipment is constant, and the refrigeration equipment can be ensured to stably maintain the operation in a steady state. In addition, the steady-state control method of the refrigeration equipment does not change the refrigeration equipment at all, can stably control the temperature of all temperature threshold ranges in a normal refrigeration range, and reduces the temperature fluctuation in the compartment. In addition, the steady-state control method of the refrigeration equipment also has the advantages of simple control logic, strong operability, wide application range and the like.
According to one embodiment of the invention, the refrigeration device is in single cycle mode and the compartment is a freezer compartment or a refrigerator compartment;
the step of adjusting the preset opening degree to an adjusted opening degree based on the fluctuation value of the actual temperature of the compartment includes:
increasing the adjustment opening degree when the fluctuation value is positive;
and if the fluctuation value is negative, reducing the adjusting opening.
According to an embodiment of the present invention, the adjusting the opening degree of the electronic expansion valve to a preset opening degree based on the ambient temperature and the compartment target temperature includes:
and adjusting the opening degree of the electronic expansion valve to a preset opening degree based on the refrigeration request of the freezing chamber or the cold storage chamber.
According to one embodiment of the invention, the refrigeration appliance is in single cycle mode and the compartments are freezing and refrigerating compartments;
the step of adjusting the preset opening degree to an adjusted opening degree based on the fluctuation value of the actual temperature of the compartment includes:
the fluctuation value of the freezing compartment is positive and the fluctuation value of the refrigerating compartment is negative, or,
and adjusting the opening angles of the air doors of the freezing chamber and the refrigerating chamber when the fluctuation value of the freezing chamber is negative and the fluctuation value of the refrigerating chamber is positive.
According to one embodiment of the invention, the refrigeration appliance is in a multi-cycle mode;
the step of adjusting the preset opening degree to an adjusted opening degree based on the fluctuation value of the actual temperature of the compartment includes:
increasing the adjustment opening degree when the fluctuation value is positive;
and reducing the adjusting opening degree when the fluctuation value is negative.
According to one embodiment of the invention, the multi-cycle mode is a parallel mode and the compartments are a freezer compartment and a refrigerator compartment;
the step of adjusting the preset opening degree to an adjusted opening degree based on the fluctuation value of the actual temperature of the compartment includes:
adjusting an adjustment opening degree of a freezing outlet of the electronic expansion valve and an adjustment opening degree of a refrigerating outlet of the electronic expansion valve, respectively, based on the fluctuation value of the freezing chamber and the fluctuation value of the refrigerating chamber.
According to one embodiment of the invention, the multi-cycle mode is a series-parallel mode and the compartments are a freezer compartment and a refrigerator compartment;
the step of adjusting the preset opening degree to an adjusted opening degree based on the fluctuation value of the actual temperature of the compartment includes:
the fluctuation value of the freezing compartment is positive and the fluctuation value of the refrigerating compartment is negative, or,
the fluctuation value of the freezing compartment is negative and the fluctuation value of the refrigerating compartment is positive, and adjusting the rotating speed of fans of the freezing chamber and the refrigerating chamber.
According to a second aspect of the invention, the steady state control device of the refrigeration equipment comprises:
the first adjusting module is used for adjusting the opening degree of the electronic expansion valve to a preset opening degree based on the environment temperature and the compartment target temperature;
and the second adjusting module is used for adjusting the preset opening degree to an adjusting opening degree based on the fluctuation value of the actual temperature of the compartment.
A refrigeration apparatus according to an embodiment of a third aspect of the present invention includes:
a processor for implementing the steps of the steady state control method of the refrigeration equipment when executing a computer program;
the sensing assembly is used for acquiring the ambient temperature and the actual temperature of the compartment of the refrigeration equipment;
and the processor adjusts the opening degree of the electronic expansion valve based on the environment temperature and the actual temperature of the compartment.
The electronic device according to the fourth aspect of the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steady-state control method of the refrigeration device when executing the computer program.
A non-transitory computer readable storage medium according to an embodiment of the fifth aspect of the invention, having stored thereon a computer program, the computer program, when executed by a processor, implements the steady state control method for a refrigeration appliance described above.
One or more technical solutions in the present invention have at least one of the following technical effects:
according to the steady-state control method of the refrigeration equipment provided by the embodiment of the first aspect of the invention, the ambient temperature of the position where the refrigeration equipment is located can be detected through the sensor of the refrigeration equipment, meanwhile, the fluctuation value of the actual temperature of the compartment of the refrigeration equipment can be obtained through the sensor, and then the opening degree of the electronic expansion valve can be adjusted through the controller of the refrigeration equipment based on the fluctuation value of the actual temperature of the compartment, so that the flow rate of the refrigerant in the refrigeration equipment is constant, and the refrigeration equipment can be ensured to stably maintain the operation in a steady state. Moreover, the steady-state control method of the refrigeration equipment does not change the refrigeration equipment at all, can stably control the temperature of all temperature threshold ranges in a normal refrigeration range, and reduces the temperature fluctuation in the room. In addition, the steady-state control method of the refrigeration equipment also has the advantages of simple control logic, strong operability, wide application range and the like.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart diagram of a steady state control method for a refrigeration apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart diagram of another steady-state control method for a refrigeration appliance provided by an embodiment of the present invention;
FIG. 3 is a schematic flow chart of a steady-state control method for a refrigeration device according to another embodiment of the present invention;
FIG. 4 is a schematic flow chart diagram of a steady state control method for a refrigeration unit according to another embodiment of the present invention;
FIG. 5 is a schematic flow chart diagram of a steady state control method for a refrigeration unit according to another embodiment of the present invention;
FIG. 6 is a schematic block diagram of a refrigeration apparatus provided by an embodiment of the present invention;
FIG. 7 is a schematic block diagram of another refrigeration unit provided by an embodiment of the present invention;
FIG. 8 is a schematic block diagram of another refrigeration apparatus provided in accordance with an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a steady-state control device of a refrigeration device provided by an embodiment of the invention;
fig. 10 is a schematic structural diagram of an electronic device provided in an embodiment of the present invention.
Reference numerals:
300. an electronic expansion valve; 302. a compressor; 304. a controller; 306. an evaporator; 308. temperature of a sensor; 310. a refrigerated evaporator; 312. a refrigeration evaporator; 314. a refrigeration fan; 316. a freezing fan; 318. a damper; 320. a first adjusting module; 322. a second adjustment module; 400. a processor; 402. a memory; 404. a communication interface; 406. a communication bus.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, this is merely to facilitate description of embodiments of the invention and to simplify the description, and is not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operated in a particular orientation, and thus should not be taken as limiting the embodiments of the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
As shown in fig. 1 to 5, an embodiment of the first aspect of the present invention provides a steady-state control method for a refrigeration apparatus, including:
step 100, adjusting the opening degree of the electronic expansion valve 300 to a preset opening degree based on the environment temperature of the position where the refrigeration equipment is located and the compartment target temperature of the refrigeration equipment;
and 200, adjusting the preset opening degree to an adjusted opening degree based on the fluctuation value of the actual temperature of the compartment of the refrigeration equipment.
According to the steady-state control method of the refrigeration equipment provided by the embodiment of the first aspect of the present invention, taking a refrigerator as an example, only a temperature sensor of the refrigerator itself, such as a temperature sensor in a compartment and a temperature sensor on the refrigerator, is needed, so that the ambient temperature of the location of the refrigerator can be detected, and meanwhile, a fluctuation value of an actual temperature of the compartment of the refrigeration equipment can be obtained through the temperature sensor in the compartment or the temperature sensor on the refrigerator, that is, the steady-state control method of the refrigeration equipment does not need to additionally introduce other detection equipment, that is, the steady-state control method does not have any additional modification on the structure of the refrigeration equipment itself
In this way, the opening degree of the electronic expansion valve 300 can be adjusted by the controller 304 of the refrigeration equipment based on the fluctuation value of the actual temperature of the compartment, so that the refrigerant flow rate in the refrigeration equipment is constant, and the refrigeration equipment can be ensured to stably maintain the operation in a steady state.
Only two parameters of the ambient temperature of the refrigerator and the fluctuation value of the actual temperature of the compartment need to be collected, so that the temperature can be stably controlled in the full temperature range, and the temperature fluctuation in the compartment is reduced. In addition, the steady-state control method of the refrigeration equipment also has the advantages of simple control logic, strong operability, wide application range and the like.
The steady-state control method for the refrigeration apparatus provided by the embodiment of the first aspect of the present invention is described below by taking the refrigeration apparatus as an example, a refrigerator.
According to the embodiment of the invention, firstly, the refrigerator is controlled to enter a steady-state temperature control mode, after the target compartment temperature is set, the compressor 302 is started to realize refrigeration, in the process, the compartment is cooled normally, and when the actual temperature in the compartment reaches the set target compartment temperature, the controller 304 of the refrigerator starts to operate the step 100.
In step 100, the ambient temperature of the location of the refrigerator may be obtained by the temperature sensor 308 of the refrigerator, and after the controller 304 obtains the ambient temperature, the rotational speed of the compressor 302 is adjusted to a preset rotational speed in combination with the compartment target temperature, and the opening degree of the electronic expansion valve 300 is adjusted to a preset opening degree.
That is, in step 100, the compartment in the refrigerator is always in a normal temperature-reducing state, and after the actual temperature of the compartment reaches the target compartment temperature, the fluctuation value of the actual compartment temperature is obtained by the temperature sensor 308 of the refrigerator at regular time intervals, and is fed back to the controller 304. After receiving the fluctuation value of the actual compartment temperature sent by the temperature sensor 308, the controller 304 controls the refrigerator to operate step 200.
In step 200, the controller 304 can adjust the preset opening degree of the electronic expansion valve 300 to the adjusted opening degree based on the fluctuation value of the actual compartment temperature as described above.
The controller 304 adjusts the preset opening degree of the electronic expansion valve 300, so that the refrigerant flow in the refrigeration cycle can be adjusted, that is, the evaporation temperature of the evaporator 306 in the refrigerator can be adjusted by adjusting the preset opening degree of the electronic expansion valve 300, and further, the actual temperature of the compartment can be kept near the target compartment temperature by adjusting the opening degree of the electronic expansion valve 300, so that the refrigerator can be stably operated.
It should be noted that when the actual temperature of the compartment approaches the target temperature of the compartment infinitely, the time interval can be shortened appropriately to control the actual temperature of the compartment more accurately.
In the embodiment of the present invention, according to the difference of the circulation mode of the refrigeration equipment and the difference of the control objects, at least the following different control modes can be adopted:
the control method is as follows:
referring to fig. 2 and 6 in combination, in this control mode, the refrigerant circulation mode in the refrigeration equipment is a single circulation mode, and in this control mode, the compartment is only a freezing compartment or only a refrigerating compartment, that is, in this control mode, the controlled object is the freezing compartment or the refrigerating compartment.
Thus, step 200 further specifically includes:
in step 210, if the fluctuation value of the actual compartment temperature detected by the temperature sensor 308 is positive, the controller 304 increases the adjustment opening degree of the electronic expansion valve 300.
In other words, if the fluctuation value of the actual compartment temperature acquired by the temperature sensor 308 of the refrigerator itself is a positive value, that is, if the actual compartment temperature rises, the adjustment opening degree of the electronic expansion valve 300 is increased so that the flow rate of the refrigerant in the refrigerator increases, and the evaporation temperature of the evaporator 306 is decreased so that the actual compartment temperature is maintained at about the target compartment temperature.
In step 220, if the fluctuation value of the actual compartment temperature detected by the temperature sensor 308 is negative, the controller 304 decreases the adjustment opening degree of the electronic expansion valve 300.
In other words, if the fluctuation value of the actual compartment temperature acquired by the temperature sensor 308 of the refrigerator itself is a negative value, that is, if the actual compartment temperature decreases, the adjustment opening degree of the electronic expansion valve 300 is decreased to decrease the flow rate of the refrigerant in the refrigerator, and the evaporation temperature of the evaporator 306 is increased to maintain the actual compartment temperature near the target compartment temperature.
In addition, in this control manner, step 100 further specifically includes:
based on the cooling request of the freezer compartment, the controller 304 may adjust the opening degree of the electronic expansion valve 300 to a preset opening degree based on the cooling request of the freezer compartment, step 110.
That is, in step 110, if there is a cooling request for the freezing compartment, the controller 304 adjusts the opening degree of the electronic expansion valve 300 to a preset opening degree based on the cooling request for the freezing compartment, and at the same time, the controller 304 adjusts the rotation speed of the compressor 302 to a preset rotation speed.
Alternatively, the controller 304 may adjust the opening degree of the electronic expansion valve 300 to a preset opening degree based on a cooling request of the refrigerating compartment.
That is, in step 110, if there is a cooling request from the refrigerating compartment, the controller 304 adjusts the opening degree of the electronic expansion valve 300 to a preset opening degree based on the cooling request from the refrigerating compartment, and at the same time, the controller 304 adjusts the rotation speed of the compressor 302 to a preset rotation speed.
And a second control mode:
in this control method, the refrigerant circulation method in the refrigeration equipment is a single circulation mode, and the compartments include both the freezing compartment and the refrigerating compartment, that is, in this control method, the control target includes both the freezing compartment and the refrigerating compartment.
Thus, referring to fig. 3 and 6, step 200 further specifically includes:
in step 230, if the temperature sensor 308 detects that the fluctuation value of the freezing compartment is positive and the temperature sensor 308 detects that the fluctuation value of the refrigerating compartment is negative, the controller 304 adjusts the opening angle of the damper 318 of the compartment.
That is, if the actual compartment temperature of the freezing compartment increases and the actual compartment temperature of the refrigerating compartment decreases, the opening angle of the damper 318 of the freezing compartment is increased to allow more cooling energy to enter the freezing compartment, and the actual compartment temperature of the freezing compartment decreases to maintain the actual compartment temperature of the freezing compartment near the target compartment temperature; at the same time, the opening angle of the damper 318 of the refrigerating compartment is reduced, so that less cold enters the refrigerating compartment, and further the actual temperature of the compartment of the refrigerating compartment is increased, so that the actual temperature of the refrigerating compartment is kept near the target temperature of the compartment of the refrigerating compartment.
Similarly, if temperature sensor 308 detects that the fluctuation value of the freezer compartment is negative and temperature sensor 308 detects that the fluctuation value of the refrigerator compartment is positive, controller 304 similarly adjusts the opening angle of damper 318 of the compartment.
That is, if the actual compartment temperature of the freezing compartment decreases and the actual compartment temperature of the refrigerating compartment increases, the opening angle of the damper 318 of the freezing compartment is decreased to allow less cooling energy to enter the freezing compartment, and the actual compartment temperature of the freezing compartment increases to maintain the actual compartment temperature of the freezing compartment near the target compartment temperature; meanwhile, the opening angle of the air door 318 of the refrigerating chamber is increased, so that more cold energy enters the refrigerating chamber, the actual temperature of the refrigerating chamber is increased, and the actual temperature of the refrigerating chamber is kept near the target temperature of the refrigerating chamber.
And a third control mode:
in this control manner, the refrigerant in the refrigeration equipment is in a multi-cycle mode and in a serial-parallel mode, that is, as shown in fig. 7, the refrigeration evaporator 310 and the freezing evaporator 312 are connected in series, a refrigeration branch is further connected in parallel between the electronic expansion valve 300 and the refrigeration evaporator 310 and the freezing evaporator 312, and the controlled objects include a freezing chamber and a refrigerating chamber.
Thus, referring to fig. 4 and 7, step 200 further specifically includes:
and 240, if the temperature sensor 308 detects that the fluctuation value of the freezing chamber is positive, and if the temperature sensor 308 detects that the fluctuation value of the refrigerating chamber is negative, respectively adjusting the rotating speeds of the freezing fan 316 of the freezing chamber and the refrigerating fan 314 of the refrigerating chamber.
That is, if the actual compartment temperature of the freezing compartment increases and the actual compartment temperature of the refrigerating compartment decreases, the rotational speed of the freezing fan 316 of the freezing compartment is increased to allow more cooling capacity to enter the freezing compartment, and the actual compartment temperature of the freezing compartment is decreased to maintain the actual compartment temperature of the freezing compartment near the target compartment temperature; meanwhile, the rotating speed of the refrigerating fan 314 of the refrigerating chamber is reduced, so that less cold energy enters the refrigerating chamber, the actual temperature of the refrigerating chamber is increased, and the actual temperature of the refrigerating chamber is kept near the target temperature of the refrigerating chamber.
Similarly, the rotation speeds of the freezing fan 316 of the freezing chamber and the refrigerating fan 314 of the refrigerating chamber are respectively adjusted when the fluctuation value of the freezing chamber is negative and the fluctuation value of the refrigerating chamber is positive.
That is, if the actual compartment temperature of the freezing compartment decreases and the actual compartment temperature of the refrigerating compartment increases, the rotational speed of the freezing fan 316 of the freezing compartment is decreased to allow less cooling energy to enter the freezing compartment, and the actual compartment temperature of the freezing compartment increases to maintain the actual compartment temperature of the freezing compartment near the target compartment temperature; meanwhile, the rotating speed of the refrigerating fan 314 of the refrigerating chamber is increased, so that more cold energy enters the refrigerating chamber, the actual temperature of the refrigerating chamber is reduced, and the actual temperature of the refrigerating chamber is kept near the target temperature of the refrigerating chamber.
The control mode is four:
in this control method, the refrigerant circulation mode in the refrigeration equipment is a multi-circulation mode, and the multi-circulation mode is a series-parallel mode, and the compartments include a freezing compartment and a refrigerating compartment at the same time, that is, in this control method, the control object includes the freezing compartment and the refrigerating compartment at the same time;
thus, step 200 further includes:
in step 210, if the temperature sensor 308 detects that the fluctuation value of the actual compartment temperature is positive, the controller 304 increases the adjustment opening degree of the electronic expansion valve 300.
In other words, if the fluctuation value of the actual compartment temperature acquired by the temperature sensor 308 of the refrigerator itself is a positive value, that is, if the actual compartment temperature rises, the adjustment opening degree of the electronic expansion valve 300 is increased so that the flow rate of the refrigerant in the refrigerator increases, and the evaporation temperature of the evaporator 306 is decreased so that the actual compartment temperature is maintained at about the target compartment temperature.
In step 220, if the temperature sensor 308 detects that the fluctuation value of the actual compartment temperature is negative, the controller 304 decreases the adjustment opening degree of the electronic expansion valve 300.
In other words, if the fluctuation value of the actual compartment temperature acquired by the temperature sensor 308 of the refrigerator is a negative value, that is, if the actual compartment temperature decreases, the adjustment opening degree of the electronic expansion valve 300 is decreased to decrease the flow rate of the refrigerant in the refrigerator, and the evaporation temperature of the evaporator 306 is increased to maintain the actual compartment temperature near the target compartment temperature.
As shown in fig. 8, the refrigerating evaporator 310 and the freezing evaporator 312 are connected in parallel with each other, and the compartments to be controlled are a freezing compartment and a refrigerating compartment.
Thus, as shown in fig. 5 and fig. 8, step 200 further specifically includes:
step 250, the controller 304 may adjust an adjustment opening degree of the electronic expansion valve 300 corresponding to the freezing outlet based on the fluctuation value of the actual temperature of the freezing compartment;
the controller 304 may also adjust the adjusted opening degree of the electronic expansion valve 300 corresponding to the refrigeration outlet based on the fluctuation value of the refrigeration compartment.
That is, in step 250, if the actual compartment temperature of the freezing compartment increases, the adjustment opening degree of the freezing outlet in the electronic expansion valve 300 is increased, so that more cooling energy enters the freezing compartment, and further, the actual compartment temperature of the freezing compartment decreases, and it is ensured that the actual compartment temperature of the freezing compartment is kept near the target compartment temperature;
if the actual compartment temperature of the freezing compartment decreases, the adjustment opening degree of the freezing outlet in the electronic expansion valve 300 is reduced, so that less cold energy enters the freezing compartment, the actual compartment temperature of the freezing compartment is increased, and the actual compartment temperature of the freezing compartment is kept near the target compartment temperature;
if the actual temperature of the compartment of the refrigeration compartment rises, the adjusting opening degree of the refrigeration outlet in the electronic expansion valve 300 is increased, so that more cold energy enters the refrigeration compartment, the actual temperature of the compartment of the refrigeration compartment is further reduced, and the actual temperature of the compartment of the refrigeration compartment is kept near the target temperature of the compartment;
if the actual compartment temperature of the cold storage compartment decreases, the adjustment opening degree of the cold storage outlet in the electronic expansion valve 300 is reduced, so that less cold energy enters the cold storage compartment, the actual compartment temperature of the cold storage compartment increases, and the actual compartment temperature of the cold storage compartment is kept near the target compartment temperature.
As shown in fig. 9, an embodiment of the second aspect of the present invention provides a steady-state control device for a refrigeration apparatus, including:
the first adjusting module 320 is configured to enable the controller 304 to adjust the opening degree of the electronic expansion valve 300 to a preset opening degree based on the ambient temperature of the location where the refrigeration equipment is located and the compartment target temperature of the refrigeration equipment;
and a second adjusting module 322, configured to enable the controller 304 to adjust the preset opening degree of the electronic expansion valve 300 to an adjusted opening degree based on the fluctuation value of the actual temperature of the compartment of the refrigeration equipment.
According to the steady-state control device of the refrigeration equipment provided by the embodiment of the first aspect of the present invention, taking a refrigerator as an example, only a temperature sensor of the refrigerator itself, such as a temperature sensor in a compartment and a temperature sensor on the refrigerator, is needed, so that the ambient temperature of the location of the refrigerator can be detected, and meanwhile, a fluctuation value of an actual temperature of the compartment of the refrigeration equipment can be obtained through the temperature sensor in the compartment or the temperature sensor on the refrigerator, that is, the steady-state control device of the refrigeration equipment does not need to additionally introduce other detection equipment, that is, the steady-state control device does not have any additional modification on the structure of the refrigeration equipment itself
In this way, the opening degree of the electronic expansion valve 300 can be adjusted by the controller 304 of the refrigeration equipment based on the fluctuation value of the actual compartment temperature, so that the refrigerant flow rate in the refrigeration equipment is constant, and the refrigeration equipment can be stably maintained to operate in a steady state.
Only two parameters of the ambient temperature of the refrigerator and the fluctuation value of the actual temperature of the compartment need to be collected, so that the temperature can be stably controlled in the full temperature range, and the temperature fluctuation in the compartment is reduced. In addition, the steady-state control device of the refrigeration equipment also has the advantages of simple control logic, strong operability, wide application range and the like.
In a third aspect, embodiments of the present invention provide a refrigeration apparatus, including:
a processor 400, the processor 400 implementing the steps of the steady state control method of the refrigeration appliance as in the embodiment of the first aspect of the invention when the processor 400 executes the computer program;
the sensing assembly is used for acquiring the ambient temperature and the actual temperature of the compartment of the refrigeration equipment;
the processor 400 adjusts the opening degree of the electronic expansion valve 300 based on the ambient temperature and the actual compartment temperature.
According to the refrigeration equipment provided by the embodiment of the third aspect of the present invention, the temperature sensor of the refrigeration equipment, such as the temperature sensor in the compartment of the refrigeration equipment and the temperature sensor on the refrigeration equipment, can detect the ambient temperature of the location where the refrigeration equipment is located, and meanwhile, the fluctuation value of the actual temperature of the compartment of the refrigeration equipment can be obtained through the temperature sensor in the compartment or the temperature sensor on the refrigeration equipment, that is, the refrigeration equipment does not need to additionally introduce other detection equipment.
In this way, the opening degree of the electronic expansion valve 300 can be adjusted by the controller 304 of the refrigeration equipment based on the fluctuation value of the actual compartment temperature, so that the refrigerant flow rate in the refrigeration equipment is constant, and the refrigeration equipment can be stably maintained to operate in a steady state.
Meanwhile, the refrigeration equipment also has the advantages of simple structure, wide application range and the like.
As shown in fig. 10, an electronic device according to the fourth embodiment of the present invention includes a memory 402, a processor 400, and a computer program stored on the memory 402 and executable on the processor 400, and when the processor 400 executes the computer program, the steps of the steady-state control method of the refrigeration device according to the first embodiment of the present invention are implemented.
The electronic device may include: a processor 400, a communication interface 404, a memory 402 and a communication bus 406, wherein the processor 400, the communication interface 404 and the memory 402 are communicated with each other through the communication bus 406. The processor 400 may call logic instructions in the memory 402 to perform the following method:
adjusting the opening degree of the electronic expansion valve 300 to a preset opening degree based on the ambient temperature of the position where the refrigeration equipment is located and the compartment target temperature of the refrigeration equipment;
based on the fluctuation value of the actual temperature of the compartment of the refrigeration equipment, the controller 304 is caused to adjust the preset opening degree of the electronic expansion valve 300 to the adjusted opening degree.
A non-transitory computer readable storage medium according to an embodiment of the fifth aspect of the present invention, has a computer program stored thereon, and the computer program, when executed by the processor 400, implements a steady-state control method of a refrigeration apparatus according to an embodiment of the first aspect of the present invention.
For example, the processor 400, when executing the computer program, implements the following steps:
adjusting the opening degree of the electronic expansion valve 300 to a preset opening degree based on the ambient temperature of the position where the refrigeration equipment is located and the compartment target temperature of the refrigeration equipment;
based on the fluctuation value of the actual temperature of the compartment of the refrigeration equipment, the controller 304 is caused to adjust the preset opening degree of the electronic expansion valve 300 to the adjusted opening degree.
Furthermore, the logic instructions in the memory 402 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product. Based on such understanding, the technical solution of the present invention or a part thereof which contributes to the related art in essence may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: u-disk, removable hard disk, read only memory 402, random access memory 402, magnetic or optical disk, and the like, may store various types of program code.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (11)

1. A steady state control method for a refrigeration apparatus, comprising:
adjusting the opening degree of the electronic expansion valve to a preset opening degree based on the environment temperature and the compartment target temperature;
and adjusting the preset opening degree to an adjusting opening degree based on the fluctuation value of the actual temperature of the compartment.
2. The steady-state control method of a refrigeration appliance according to claim 1, wherein the refrigeration appliance is in a single cycle mode, and the compartment is a freezing compartment or a refrigerating compartment;
the step of adjusting the preset opening degree to an adjusted opening degree based on the fluctuation value of the actual temperature of the compartment includes:
increasing the adjustment opening degree when the fluctuation value is positive;
and reducing the adjusting opening degree when the fluctuation value is negative.
3. A steady-state control method of a refrigerating apparatus according to claim 2,
the step of adjusting the opening degree of the electronic expansion valve to a preset opening degree based on the ambient temperature and the compartment target temperature includes:
and adjusting the opening degree of the electronic expansion valve to a preset opening degree based on the refrigeration request of the freezing chamber or the cold storage chamber.
4. The steady-state control method of a refrigeration appliance according to claim 1, wherein the refrigeration appliance is in a single cycle mode, and the compartments are a freezing compartment and a refrigerating compartment;
the step of adjusting the preset opening degree to an adjusted opening degree based on the fluctuation value of the actual temperature of the compartment includes:
the fluctuation value of the freezing compartment is positive and the fluctuation value of the refrigerating compartment is negative, or,
and adjusting the opening angles of the air doors of the freezing chamber and the refrigerating chamber when the fluctuation value of the freezing chamber is negative and the fluctuation value of the refrigerating chamber is positive.
5. The steady-state control method of a refrigeration apparatus as set forth in claim 1, wherein the refrigeration apparatus is in a multi-cycle mode;
the step of adjusting the preset opening degree to an adjusted opening degree based on the fluctuation value of the actual temperature of the compartment includes:
increasing the adjustment opening degree when the fluctuation value is positive;
and reducing the adjusting opening degree when the fluctuation value is negative.
6. The steady-state control method of a refrigeration appliance according to claim 5, wherein the multi-cycle mode is a parallel mode, and the compartments are a freezing compartment and a refrigerating compartment;
the step of adjusting the preset opening degree to an adjusted opening degree based on the fluctuation value of the actual temperature of the compartment includes:
adjusting an adjusted opening degree of a freezing outlet of the electronic expansion valve and an adjusted opening degree of a refrigerating outlet of the electronic expansion valve, respectively, based on the fluctuation value of the freezing compartment and the fluctuation value of the refrigerating compartment.
7. The steady-state control method of a refrigeration appliance according to claim 1, wherein the multi-cycle mode is a series-parallel mode, and the compartments are a freezing compartment and a refrigerating compartment;
the step of adjusting the preset opening degree to an adjusted opening degree based on the fluctuation value of the actual temperature of the compartment includes:
the fluctuation value of the freezing compartment is positive and the fluctuation value of the refrigerating compartment is negative, or,
and adjusting the rotating speeds of fans of the freezing chamber and the refrigerating chamber when the fluctuation value of the freezing chamber is negative and the fluctuation value of the refrigerating chamber is positive.
8. A steady state control apparatus for a refrigeration apparatus, comprising:
the first adjusting module is used for adjusting the opening degree of the electronic expansion valve to a preset opening degree based on the environment temperature and the compartment target temperature;
and the second adjusting module is used for adjusting the preset opening degree to an adjusting opening degree based on the fluctuation value of the actual temperature of the compartment.
9. A refrigeration apparatus, comprising:
a processor which, when executing a computer program, carries out the steps of a steady-state control method of a refrigeration appliance according to any one of claims 1 to 7;
the sensing assembly is used for acquiring the ambient temperature and the actual temperature of the compartment of the refrigeration equipment;
and the processor adjusts the opening degree of the electronic expansion valve based on the environment temperature and the actual temperature of the compartment.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements a steady-state control method of a refrigeration device according to any one of claims 1 to 7 when executing the computer program.
11. A non-transitory computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements a steady-state control method of a refrigeration appliance according to any one of claims 1 to 7.
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Publication number Priority date Publication date Assignee Title
CN105258416A (en) * 2015-10-09 2016-01-20 珠海格力电器股份有限公司 Control method, control device and control system for initial opening degree of electronic expansion valve
CN109520099A (en) * 2018-11-27 2019-03-26 宁波奥克斯电气股份有限公司 A kind of initial opening control method, device and the air conditioner of electric expansion valve
CN111076352A (en) * 2019-12-30 2020-04-28 宁波奥克斯电气股份有限公司 Control method and device for multi-split air conditioner electronic expansion valve, air conditioner and storage medium
CN112665254A (en) * 2020-12-28 2021-04-16 江苏拓米洛环境试验设备有限公司 Control method and device for multi-chamber electronic expansion valve of refrigeration system and refrigeration system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105258416A (en) * 2015-10-09 2016-01-20 珠海格力电器股份有限公司 Control method, control device and control system for initial opening degree of electronic expansion valve
CN109520099A (en) * 2018-11-27 2019-03-26 宁波奥克斯电气股份有限公司 A kind of initial opening control method, device and the air conditioner of electric expansion valve
CN111076352A (en) * 2019-12-30 2020-04-28 宁波奥克斯电气股份有限公司 Control method and device for multi-split air conditioner electronic expansion valve, air conditioner and storage medium
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