CN108800750B - Refrigerator control method, refrigerator and computer-readable storage medium - Google Patents
Refrigerator control method, refrigerator and computer-readable storage medium Download PDFInfo
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- CN108800750B CN108800750B CN201810640606.XA CN201810640606A CN108800750B CN 108800750 B CN108800750 B CN 108800750B CN 201810640606 A CN201810640606 A CN 201810640606A CN 108800750 B CN108800750 B CN 108800750B
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- compressor
- refrigerator
- distribution valve
- controlling
- rotating speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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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
- 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
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/077—Compressor control units, e.g. terminal boxes, mounted on the compressor casing wall containing for example starter, protection switches or connector contacts
Abstract
The invention discloses a control method of a refrigerator, the refrigerator and a computer readable storage medium, wherein the control method of the refrigerator comprises the steps of obtaining the initial rotating speed of a compressor of the refrigerator when the running state of the refrigerator reaches the switching condition of a distribution valve of the refrigerator, wherein the distribution valve is used for distributing the flow of refrigerant entering different evaporators of the refrigerator; judging whether the initial rotating speed of the compressor is smaller than a preset threshold value or not; when the initial rotating speed is smaller than the preset threshold value, controlling the opening and closing state of the distribution valve so as to adjust the flow of the refrigerant entering different evaporators; and when the initial rotating speed is greater than the preset threshold value, controlling the rotating speed of the compressor to be less than the preset threshold value, and then controlling the opening and closing states of the distribution valve so as to adjust the flow rates of the refrigerants entering different evaporators. The invention can avoid the technical problem that the switching of the distribution valve is not in place due to the over-high flow speed of the refrigerant passing through the distribution valve.
Description
Technical Field
The invention relates to the technical field of household appliance control, in particular to a refrigerator control method, a refrigerator and a computer readable storage medium.
Background
In the prior art, a compressor of a refrigerator continuously sucks a refrigerant in an evaporator and compresses the refrigerant into high-pressure and high-temperature steam to be sent to a condenser, the refrigerant releases heat in the condenser and is condensed into liquid, and the refrigerant is distributed in flow direction and flow rate through a distribution valve and enters different evaporators, so that refrigeration of different chambers provided with different evaporators is realized. The distribution valve adjusts the flow of the refrigerant entering different evaporators by switching different states. When the flow rate of the refrigerant passing through the distribution valve is too high, the switching state of the distribution valve is easy to fail or the switching is not in place, thereby affecting the operation of the refrigerator.
Disclosure of Invention
The invention mainly aims to provide a control method of a refrigerator, the refrigerator and a computer readable storage medium, and aims to solve the technical problem that the switching state of a distribution valve is not in place due to overhigh flow rate of a refrigerant.
In order to achieve the above object, the present invention provides a method for controlling a refrigerator, comprising the steps of:
when the running state of the refrigerator reaches the switching condition of a distribution valve of the refrigerator, acquiring the initial rotating speed of a compressor of the refrigerator, wherein the distribution valve is used for distributing the flow of refrigerant entering different evaporators of the refrigerator;
judging whether the initial rotating speed of the compressor is smaller than a preset threshold value or not;
when the initial rotating speed is smaller than the preset threshold value, controlling the opening and closing state of the distribution valve so as to adjust the flow of the refrigerant entering different evaporators;
and when the initial rotating speed is greater than the preset threshold value, controlling the rotating speed of the compressor to be less than the preset threshold value, and then controlling the opening and closing states of the distribution valve so as to adjust the flow rates of the refrigerants entering different evaporators.
Preferably, after the step of controlling the rotation speed of the compressor to be less than the preset threshold and then controlling the opening and closing state of the distribution valve to adjust the flow rates of the refrigerants entering the different evaporators when the initial rotation speed is greater than the preset threshold, the method further includes:
and controlling the rotating speed of the compressor to be increased to the initial rotating speed.
Preferably, the step of dividing the rotation speed of the compressor into a plurality of gears, each gear corresponding to a rotation speed value or a continuous rotation speed value, and when the initial rotation speed is greater than the preset threshold, controlling the rotation speed of the compressor to be less than the preset threshold, and then controlling the distribution valve to adjust the flow rates of the refrigerants entering the different evaporators specifically includes:
when the initial rotating speed is greater than the preset threshold value, the rotating speed of the compressor is controlled to be reduced by one gear every preset time until the rotating speed of the compressor is less than the preset threshold value, and then the opening and closing states of the distribution valves are controlled so as to adjust the flow rates of the refrigerants entering different evaporators.
Preferably, after the step of controlling the rotation speed of the compressor to decrease by one gear every preset time and then controlling the opening and closing state of the distribution valve to adjust the flow rates of the refrigerants entering the different evaporators, when the initial rotation speed is greater than the preset threshold, the method further comprises:
and controlling the rotating speed of the compressor to increase by one gear every the preset time until the rotating speed of the compressor is increased to the initial rotating speed.
Preferably, the evaporator includes a refrigerating chamber evaporator and a freezing chamber evaporator, the open-close state of the distribution valve includes a first state and a second state, and when the distribution valve is in the first state, the refrigerant flows back to the compressor after flowing through the refrigerating chamber evaporator and the freezing chamber evaporator; when the distributing valve is in the second state, the refrigerant directly flows through the freezing chamber evaporator without flowing through the refrigerating chamber evaporator and then flows back to the compressor.
Preferably, the step of acquiring an initial rotation speed of a compressor of the refrigerator when the operation state of the refrigerator reaches a switching condition of a distribution valve of the refrigerator specifically includes:
acquiring the opening and closing state of the distribution valve, acquiring the refrigerating temperature of the refrigerating chamber evaporator or a refrigerating chamber corresponding to the refrigerating chamber evaporator, and the freezing temperature of the freezing chamber evaporator or a freezing chamber corresponding to the freezing chamber evaporator;
when the opening and closing state is the first state, judging whether the refrigerating temperature is lower than a first preset temperature or not;
when the refrigerating temperature is lower than a first preset temperature, confirming that the switching condition of the distribution valve is met;
when the opening and closing state is the second state, judging whether the refrigerating temperature is lower than the first preset temperature or not;
and when the refrigerating temperature is higher than the first preset temperature, confirming that the switching condition of the distribution valve is met, wherein the first preset temperature is higher than the second preset temperature.
Preferably, after the step of determining whether the refrigerating temperature is lower than the first preset temperature when the open/close state is the second state, the method further includes:
judging whether the freezing temperature is lower than the second preset temperature or not;
and when the freezing temperature is lower than the second preset temperature, controlling the compressor to stop working.
Preferably, the step of controlling the open/close state of the distribution valve to adjust the flow rates of the refrigerants entering the different evaporators specifically includes:
controlling the distribution valve to be switched to the second state so as to regulate the refrigerant not to flow through the refrigerating chamber evaporator;
or controlling the distribution valve to switch to the first state so as to regulate the refrigerant to flow through the refrigerating chamber evaporator.
The invention also provides a refrigerator, which comprises a compressor, evaporators, distribution valves, a storage unit, a processing unit and a computer program which is stored on the storage unit and can run on the processing unit, wherein the processing unit executes the computer program to realize the steps of the control method of the refrigerator, the number of the evaporators is at least two, and the distribution valves are used for distributing the flow of the refrigerant entering different evaporators.
The present invention also provides a computer readable storage medium having stored thereon a computer program which, when being executed by a processing unit, realizes the steps of the control method of a refrigerator as aforementioned.
In the technical scheme of the invention, the rotating speed of the compressor is controlled to be reduced, so that when the refrigerant compressed and driven by the compressor flows through the distributing valve, the flow rate is low, and then the distributing valve is switched, thereby avoiding the condition that the distributing valve fails to switch or is not switched in place due to the high flow rate of the refrigerant, and improving the product performance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of hardware modules of a refrigerator according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a first embodiment of a control method of a refrigerator according to the present invention;
fig. 3 is a flowchart illustrating a second embodiment of a control method of a refrigerator according to the present invention;
fig. 4 is a flowchart illustrating a control method of a refrigerator according to a third embodiment of the present invention;
fig. 5 is a flowchart illustrating a fourth embodiment of a control method of a refrigerator in the present invention;
fig. 6 is a partial flowchart illustrating a fifth embodiment of a control method of a refrigerator according to the present invention;
fig. 7 is a partial flowchart illustrating a sixth embodiment of a method for controlling a refrigerator according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a control method of a refrigerator, the refrigerator and a computer readable storage medium.
As shown in fig. 1, fig. 1 is a schematic diagram of a hardware module structure of a refrigerator in an embodiment of the present invention.
The control method of the refrigerator in the present embodiment is applied to the refrigerator 100 for controlling the operation of the refrigerator 100. The refrigerator 100 comprises a compressor 30, an evaporator 40, a distribution valve 50, a storage unit 10 and a processing unit 20, the processing unit 20 is connected with the storage unit 10, the compressor 30, the evaporator 40 and the distribution valve 50, respectively, the storage unit 10 stores a computer program thereon, and the computer program can be executed by the processing unit 20.
It is understood that, in the refrigerator 100, the refrigerant in the evaporator 40 is continuously sucked by the compressor 30 and compressed into high-pressure, high-temperature vapor to be sent to the condenser; the refrigerant gives off heat in the condenser and is condensed into liquid; the refrigerant then passes through a distribution valve 50, and the distribution valve 50 is used to control the flow direction and flow rate of the refrigerant, and then enters the throttling element capillary tube and then enters the evaporator 40. The refrigerant changes from high pressure to low pressure in the capillary tube of the throttling element and generates a small amount of gasified liquid, when the refrigerant leaves the capillary tube of the throttling element, the refrigerant changes into a liquid-gas mixed state, then enters the evaporator 40 to be boiled and evaporated, the required gasification heat is absorbed from the cooled object, and the low-pressure and high-temperature refrigerant is sucked, compressed and enters the next circulation by the compressor 30.
The number and the installation position of the evaporators 40 correspond to the partitioned compartments of the refrigerator 100, and the distribution valve 50 is required to distribute the refrigerant when the number of the evaporators 40 is at least two. The evaporator 40 may include a refrigerating chamber evaporator, a freezing chamber evaporator and a variable temperature chamber evaporator, so as to realize that the compartment corresponding to the refrigerating chamber evaporator has a refrigerating function, the compartment corresponding to the freezing chamber evaporator has a freezing function, and the compartment corresponding to the variable temperature chamber evaporator has a zero-degree fresh-keeping function. Generally, the refrigerant passes through the refrigerating chamber evaporator preferentially, and when the refrigerating temperature reaches the set temperature, the processing unit 20 gives a control signal to the distribution valve 50, the distribution valve 50 closes the flow path of the refrigerating chamber evaporator, and the refrigerant only flows to the freezing chamber evaporator until the freezing temperature reaches the set temperature.
In addition, the refrigerant may be filtered and dried by a filter drier to remove impurities and moisture from the refrigerant, and then the refrigerant may enter the distribution valve 50.
In the present embodiment, the storage unit 10 may be used to store a software program as well as various data. The storage unit 10 may mainly include a storage program area that may store an operating system, an application program required for at least one function, and the like, and a storage data area that may store data (such as temperature data) and the like required when the refrigerator 100 is used.
The processing unit 20, which is a control center of the refrigerator 100, connects various parts of the entire refrigerator 100 using various interfaces and lines, and performs various functions of the refrigerator 100 and processes data by operating or executing software programs and/or modules stored in the storage unit 10 and calling data stored in the storage unit 10, thereby monitoring the refrigerator 100 as a whole.
Based on the above hardware structure, various embodiments of the control method of the refrigerator 100 in the present invention are proposed.
Fig. 2 is a flowchart illustrating a control method of a refrigerator according to a first embodiment of the present invention. The control method 201 comprises the following steps:
step S1, when the running state of the refrigerator reaches the switching condition of the distribution valve of the refrigerator, the initial rotating speed of the compressor of the refrigerator is obtained, and the distribution valve is used for distributing the flow of the refrigerant entering different evaporators of the refrigerator;
specifically, the operation state of the refrigerator may refer to a temperature of the refrigerating chamber, a temperature of the freezing chamber, a temperature of the evaporator of the refrigerating chamber, a temperature of the evaporator of the freezing chamber, a thickness of a frost layer attached to the evaporator of the refrigerating chamber and the evaporator of the freezing chamber, or an operation indirection of the compressor, that is, the operation of the compressor for a period of time, the switching of the distribution valve, and the like. The distribution valve may be a valve capable of regulating and controlling liquid flow, such as an electromagnetic electronic expansion valve, an electrodynamic electronic expansion valve, or the like. As will be appreciated by those skilled in the art, the distribution valve may be used in the control of the refrigerator to determine how to distribute the refrigerant flow to the various evaporators based on a variety of factors. The specific operation state of the refrigerator satisfies the switching condition of the dispensing valve, and is not limited in this embodiment. The number and the installation position of the evaporators can be determined according to how many compartments are provided in the refrigerator, for example: the evaporator can comprise a refrigerating chamber evaporator, a freezing chamber evaporator and a temperature-variable chamber evaporator so as to realize the respective temperature control of different chambers.
Step S2, judging whether the initial rotating speed of the compressor is less than a preset threshold value;
specifically, the preset threshold may be set according to actual requirements, so that when the rotation speed of the compressor is the preset threshold, the influence of the refrigerant passing through the distribution valve on the switching of the distribution valve is small or none.
Step S3, when the initial rotating speed is less than the preset threshold value, controlling the opening and closing state of the distributing valve to adjust the flow of the refrigerant entering different evaporators;
and step S4, when the initial rotating speed is greater than the preset threshold value, controlling the rotating speed of the compressor to be less than the preset threshold value, and then controlling the opening and closing state of the distribution valve to adjust the flow rates of the refrigerants entering different evaporators.
In the invention, the rotating speed of the compressor is controlled to be reduced, so that when the refrigerant compressed and driven by the compressor flows through the distributing valve, the flow rate is lower, and then the distributing valve is switched, thereby avoiding the condition that the switching fails or is not in place due to the faster flow rate of the refrigerant of the distributing valve, and improving the product performance.
Referring to fig. 3, a flowchart of a control method of a refrigerator according to a second embodiment of the present invention is shown. In the second embodiment, steps S1 to S4 of the control method 202 for the refrigerator are the same as those in the first embodiment, and are not repeated herein; the difference is that after step S4, the method further includes:
and step S51, controlling the rotating speed of the compressor to be increased to the initial rotating speed.
Specifically, in order to avoid the situation that the flow rate of the refrigerant is too high when the distribution valve is switched, the compressor is controlled to reduce the rotating speed, correspondingly, after the distribution valve is switched, the rotating speed of the compressor is adjusted to be increased to the initial rotating speed, and therefore normal refrigeration of the refrigerator is guaranteed.
Referring to fig. 4, a flow chart of a third embodiment of a control method of a refrigerator according to the present invention is shown. In the third embodiment, steps S1 to S3 of the control method 203 for the refrigerator are the same as those in the first embodiment, and are not repeated herein; the difference is that the rotation speed of the compressor is divided into a plurality of gears, each gear corresponds to a rotation speed value or a continuous rotation speed value, and the step S4 specifically includes:
and step S41, when the initial rotating speed is greater than the preset threshold value, controlling the rotating speed of the compressor to be reduced by one gear every preset time until the rotating speed of the compressor is less than the preset threshold value, and then controlling the opening and closing state of the distribution valve to adjust the flow of the refrigerant entering different evaporators.
Specifically, a person skilled in the art can set the preset time and divide the rotation speed of the compressor into a plurality of gears according to actual needs. For example: the rotating speed of the compressor is 2000-4000 rpm, the rotating speed of the compressor can be divided into 4 gears, the rotating speed corresponding to 1 gear is 2000-2500 rpm, the rotating speed corresponding to 2 gears is 2500-3000 rpm, the rotating speed corresponding to 3 gears is 3000-3500 rpm, the rotating speed corresponding to 4 gears is 3500-4000 rpm, and when the initial rotating speed is 3700, the corresponding gear is 4 gears. Assuming that the preset threshold is 3000 and the interval time is 5s, since the initial rotating speed 3700rpm is greater than the preset threshold 3000rpm, the rotating speed of the compressor is reduced by 3 steps, and still not less than the preset threshold 3000rpm, and after 5s, the rotating speed of the compressor is controlled to be reduced to 2 steps so as to satisfy that the rotating speed of the compressor is less than the preset threshold.
The rotating speed is divided into different gears, so that the control is convenient, and the gradual reduction of the rotating speed is realized; the rotating speed of the compressor is adjusted once every preset time, so that the phenomenon that the rotating speed of the compressor is suddenly reduced to influence the service life of the compressor is avoided.
Referring to fig. 5, a flowchart of a fourth embodiment of a method for controlling a refrigerator according to the present invention is shown. In the fourth embodiment, steps S1 to S4 of the control method 204 for the refrigerator are the same as those in the third embodiment, and are not repeated herein; the difference is that after step S41, the method further includes:
and step S52, controlling the rotating speed of the compressor to increase by one gear every the preset time until the rotating speed of the compressor is increased to the initial rotating speed.
In one embodiment, the evaporator includes a refrigerating chamber evaporator and a freezing chamber evaporator, the open-close state of the distribution valve includes a first state and a second state, and when the distribution valve is in the first state, the refrigerant flows back to the compressor after flowing through the refrigerating chamber evaporator and the freezing chamber evaporator; when the distributing valve is in the second state, the refrigerant directly flows through the freezing chamber evaporator without flowing through the refrigerating chamber evaporator and then flows back to the compressor.
Specifically, when the distribution valve is in the first state, the refrigerant flows back to the compressor after flowing through the refrigerating chamber evaporator and the freezing chamber evaporator, so that both the refrigerating chamber evaporator and the freezing chamber evaporator have a refrigerating function; when the distributing valve is in the second state, the refrigerant directly flows through the freezing chamber evaporator without flowing through the refrigerating chamber evaporator and then flows back to the compressor, so that the refrigerating chamber evaporator is not refrigerated, the freezing chamber evaporator can be refrigerated, and the temperature inconsistency of the freezing chamber and the refrigerating chamber can be realized. In another embodiment, the evaporator further includes a variable temperature chamber evaporator, and the operation state of the distribution valve may further include a third state, that is, the refrigerant is controlled not to flow through the refrigerating chamber evaporator and the variable temperature chamber evaporator, but flows directly through the freezing chamber evaporator and then flows back to the compressor; or a fourth state of controlling the flow rate of the refrigerant flowing through the evaporator of the refrigerating chamber to be reduced, and simultaneously, the refrigerant flowing through the evaporator of the freezing chamber to flow back to the compressor and the like.
Referring to fig. 6, a partial flow chart of a fifth embodiment of a control method for a refrigerator according to the present invention is shown. In the fifth embodiment, steps S2 to S4 of the control method 205 of the refrigerator are the same as those in the first embodiment, and are not repeated herein; the difference is that step S1 specifically includes:
step S11, acquiring the open/close state of the distribution valve, acquiring the refrigerating temperature of the refrigerating chamber evaporator or the refrigerating chamber corresponding to the refrigerating chamber evaporator, and the freezing temperature of the freezing chamber evaporator or the freezing chamber corresponding to the freezing chamber evaporator;
step S12, when the opening and closing state is the first state, judging whether the refrigerating temperature is less than a first preset temperature;
step S14, when the refrigeration temperature is less than a first preset temperature, confirming that the switching condition of the distribution valve is satisfied;
step S13, when the open/close state is the second state, determining whether the refrigeration temperature is less than the first preset temperature;
and step S15, when the refrigerating temperature is higher than the first preset temperature, determining that a switching condition of the distribution valve is satisfied, wherein the first preset temperature is higher than the second preset temperature.
Specifically, a person skilled in the art can set a first preset temperature and a second preset temperature according to actual needs, and preferably, the first preset temperature ranges from 3 ℃ to 10 ℃, and the second preset temperature ranges from-15 ℃ to-20 ℃. The refrigerating state of each compartment can be judged according to the opening and closing state, the freezing temperature and the refrigerating temperature, and the temperature of each compartment can be further controlled through a distribution valve.
Referring to fig. 7, a partial flowchart of a sixth embodiment of a method for controlling a refrigerator according to the present invention is shown. In the sixth embodiment, steps S11 to S15, and steps S2 to S4 of the control method 206 for a refrigerator are the same as those in the fifth embodiment, and are not repeated herein; the difference is that after step S13, the method further includes:
step S16, judging whether the freezing temperature is lower than the second preset temperature;
and step S17, when the freezing temperature is lower than the second preset temperature, controlling the compressor to stop working.
When the state of opening and shutting is the second state, proves that freezing temperature has been less than first predetermined temperature, the temperature subcooling of freezer promptly, works as freezing temperature is less than during the second predetermined temperature, proves the temperature subcooling of freezer, and the compressor stop work this moment for refrigerating chamber evaporimeter and freezer evaporimeter all no longer refrigerate, and the power saving is the time, avoids the compressor to operate always.
Accordingly, in another embodiment, the controlling the opening and closing states of the distribution valves in the steps S3 and S4 to adjust the refrigerant flow rates entering the different evaporators specifically includes:
controlling the distribution valve to be switched to the second state so as to regulate the refrigerant not to flow through the refrigerating chamber evaporator;
or controlling the distribution valve to switch to the first state so as to regulate the refrigerant to flow through the refrigerating chamber evaporator.
The over-distribution valve switches different states to adjust whether the refrigerant flows into different evaporators or not, thereby realizing the control of the temperature of each chamber.
Referring to fig. 1 again, the present invention further provides a refrigerator, including a compressor, evaporators, at least two evaporators, a distribution valve, a storage unit, a processing unit, and a computer program stored in the storage unit and operable on the processing unit, wherein the distribution valve is used for distributing refrigerant flows entering different evaporators, and the processing unit implements the steps of the control method of the refrigerator when executing the computer program, and specifically includes:
step S1, when the running state of the refrigerator reaches the switching condition of the distribution valve of the refrigerator, the initial rotating speed of the compressor of the refrigerator is obtained, and the distribution valve is used for distributing the flow of the refrigerant entering different evaporators of the refrigerator;
step S2, judging whether the initial rotating speed of the compressor is less than a preset threshold value;
step S3, when the initial rotating speed is less than the preset threshold value, controlling the opening and closing state of the distributing valve to adjust the flow of the refrigerant entering different evaporators;
and step S4, when the initial rotating speed is greater than the preset threshold value, controlling the rotating speed of the compressor to be less than the preset threshold value, and then controlling the opening and closing state of the distribution valve to adjust the flow rates of the refrigerants entering different evaporators.
In the invention, the rotating speed of the compressor is controlled to be reduced, so that when the refrigerant compressed and driven by the compressor flows through the distributing valve, the flow rate is lower, and then the distributing valve is switched, thereby avoiding the condition that the switching fails or is not in place due to the faster flow rate of the refrigerant of the distributing valve, and improving the product performance.
Further, after the step of controlling the rotation speed of the compressor to be less than the preset threshold value and then controlling the opening and closing state of the distribution valve to adjust the flow rates of the refrigerants entering the different evaporators when the initial rotation speed is greater than the preset threshold value, the method further includes:
and step S51, controlling the rotating speed of the compressor to be increased to the initial rotating speed.
Further, when the initial rotation speed is greater than the preset threshold, the step of controlling the rotation speed of the compressor to be less than the preset threshold and then controlling the opening and closing state of the distribution valve to adjust the flow rates of the refrigerants entering different evaporators specifically includes:
and step S41, when the initial rotating speed is greater than the preset threshold value, controlling the rotating speed of the compressor to be reduced by one gear every preset time until the rotating speed of the compressor is less than the preset threshold value, and then controlling the opening and closing state of the distribution valve to adjust the flow of the refrigerant entering different evaporators.
Further, when the initial rotation speed is greater than the preset threshold, controlling the rotation speed of the compressor to decrease by one gear every preset time until the rotation speed of the compressor is less than the preset threshold, and then controlling the opening and closing state of the distribution valve to adjust the flow rates of the refrigerants entering different evaporators, the method further comprises:
and step S52, controlling the rotating speed of the compressor to increase by one gear every the preset time until the rotating speed of the compressor is increased to the initial rotating speed.
Furthermore, the evaporator comprises a refrigerating chamber evaporator and a freezing chamber evaporator, the opening and closing state of the distribution valve comprises a first state and a second state, and when the distribution valve is in the first state, a refrigerant flows back to the compressor after flowing through the refrigerating chamber evaporator and the freezing chamber evaporator; when the distributing valve is in the second state, the refrigerant directly flows through the freezing chamber evaporator without flowing through the refrigerating chamber evaporator and then flows back to the compressor.
Further, the step of acquiring an initial rotation speed of a compressor of the refrigerator when the operation state of the refrigerator reaches a switching condition of a distribution valve of the refrigerator, where the distribution valve is used to distribute flow rates of refrigerants entering different evaporators of the refrigerator specifically includes:
step S11, acquiring the open/close state of the distribution valve, acquiring the refrigerating temperature of the refrigerating chamber evaporator or the refrigerating chamber corresponding to the refrigerating chamber evaporator, and the freezing temperature of the freezing chamber evaporator or the freezing chamber corresponding to the freezing chamber evaporator;
step S12, when the opening and closing state is the first state, judging whether the refrigerating temperature is less than a first preset temperature;
step S14, when the refrigeration temperature is less than a first preset temperature, confirming that the switching condition of the distribution valve is satisfied;
step S13, when the open/close state is the second state, determining whether the refrigeration temperature is less than the first preset temperature;
and step S15, when the refrigerating temperature is higher than the first preset temperature, determining that a switching condition of the distribution valve is satisfied, wherein the first preset temperature is higher than the second preset temperature.
Further, after the step of determining whether the refrigerating temperature is lower than the first preset temperature when the open/close state is the second state, the method further includes:
step S16, judging whether the freezing temperature is lower than the second preset temperature;
and step S17, when the freezing temperature is lower than the second preset temperature, controlling the compressor to stop working.
Further, the step of controlling the open/close state of the distribution valve when the initial rotation speed is less than the preset threshold value to adjust the refrigerant flow rates entering different evaporators, and the step of controlling the rotation speed of the compressor to be less than the preset threshold value when the initial rotation speed is greater than the preset threshold value to control the open/close state of the distribution valve to adjust the open/close state of the distribution valve in the step of adjusting the refrigerant flow rates entering different evaporators specifically include:
controlling the distribution valve to be switched to the second state so as to regulate the refrigerant not to flow through the refrigerating chamber evaporator;
or controlling the distribution valve to switch to the first state so as to regulate the refrigerant to flow through the refrigerating chamber evaporator.
The over-distribution valve switches different states to adjust whether the refrigerant flows into different evaporators or not, thereby realizing the control of the temperature of each chamber.
The present invention also provides a computer readable storage medium having stored thereon a computer program which, when being executed by a processing unit, realizes the steps of the control method of a refrigerator as aforementioned.
In the description herein, references to the description of the term "one embodiment," "another embodiment," or "first through xth embodiments," 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 the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, method steps, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only an alternative implementation of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents made by the content of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A control method of a refrigerator is characterized by comprising the following steps:
when the running state of the refrigerator reaches the switching condition of a distribution valve of the refrigerator, acquiring the initial rotating speed of a compressor of the refrigerator, wherein the distribution valve is used for distributing the flow of refrigerant entering different evaporators of the refrigerator;
judging whether the initial rotating speed of the compressor is smaller than a preset threshold value or not;
when the initial rotating speed is smaller than the preset threshold value, controlling the opening and closing state of the distribution valve so as to adjust the flow of the refrigerant entering different evaporators;
and when the initial rotating speed is greater than the preset threshold value, controlling the rotating speed of the compressor to be less than the preset threshold value, and then controlling the opening and closing states of the distribution valve so as to adjust the flow rates of the refrigerants entering different evaporators.
2. The method as claimed in claim 1, wherein after the steps of controlling the rotation speed of the compressor to be less than the preset threshold value and controlling the opening and closing state of the distribution valve to adjust the flow rate of the refrigerant entering the different evaporators when the initial rotation speed is greater than the preset threshold value, the method further comprises:
and controlling the rotating speed of the compressor to be increased to the initial rotating speed.
3. The method as claimed in claim 1, wherein the step of dividing the rotation speed of the compressor into a plurality of gears, each gear corresponding to a rotation speed value or a continuous rotation speed value, and when the initial rotation speed is greater than the preset threshold, controlling the rotation speed of the compressor to be less than the preset threshold, and then controlling the opening and closing state of the distribution valve to adjust the flow rates of the refrigerants entering different evaporators specifically comprises:
when the initial rotating speed is greater than the preset threshold value, the rotating speed of the compressor is controlled to be reduced by one gear every preset time until the rotating speed of the compressor is less than the preset threshold value, and then the opening and closing states of the distribution valves are controlled so as to adjust the flow rates of the refrigerants entering different evaporators.
4. The method as claimed in claim 3, wherein after the step of controlling the rotational speed of the compressor to be decreased by one gear every predetermined time and then controlling the opening and closing state of the distribution valve to adjust the flow rate of the refrigerant entering the different evaporators when the initial rotational speed is greater than the predetermined threshold, the method further comprises:
and controlling the rotating speed of the compressor to increase by one gear every the preset time until the rotating speed of the compressor is increased to the initial rotating speed.
5. The control method of a refrigerator as claimed in claim 1, wherein the evaporator includes a refrigerating compartment evaporator and a freezing compartment evaporator, the open and closed state of the distribution valve includes a first state and a second state, and when the distribution valve is in the first state, a refrigerant flows back to the compressor after passing through the refrigerating compartment evaporator and the freezing compartment evaporator; when the distributing valve is in the second state, the refrigerant directly flows through the freezing chamber evaporator without flowing through the refrigerating chamber evaporator and then flows back to the compressor.
6. The method for controlling a refrigerator according to claim 5, wherein the step of obtaining an initial rotation speed of a compressor of the refrigerator when the operation state of the refrigerator reaches a switching condition of a distribution valve of the refrigerator specifically comprises:
acquiring the opening and closing state of the distribution valve, acquiring the refrigerating temperature of the refrigerating chamber evaporator or a refrigerating chamber corresponding to the refrigerating chamber evaporator, and the freezing temperature of the freezing chamber evaporator or a freezing chamber corresponding to the freezing chamber evaporator;
when the opening and closing state is the first state, judging whether the refrigerating temperature is lower than a first preset temperature or not;
when the refrigerating temperature is lower than a first preset temperature, confirming that the switching condition of the distribution valve is met;
when the opening and closing state is the second state, judging whether the refrigerating temperature is lower than the first preset temperature or not;
and when the refrigerating temperature is higher than the first preset temperature, determining that the switching condition of the distribution valve is met, wherein the first preset temperature is higher than the second preset temperature.
7. The method as claimed in claim 6, wherein after the step of determining whether the refrigerating temperature is lower than the first preset temperature when the open/close state is the second state, the method further comprises:
judging whether the freezing temperature is lower than the second preset temperature or not;
and when the freezing temperature is lower than the second preset temperature, controlling the compressor to stop working.
8. The method as claimed in claim 6, wherein the step of controlling the opening and closing state of the distribution valve to adjust the flow rate of the refrigerant entering the different evaporators comprises:
controlling the distribution valve to be switched to the second state so as to regulate the refrigerant not to flow through the refrigerating chamber evaporator;
or controlling the distribution valve to switch to the first state so as to regulate the refrigerant to flow through the refrigerating chamber evaporator.
9. A refrigerator comprising a compressor, evaporators, distribution valves, a storage unit, a processing unit and a computer program stored in the storage unit and executable on the processing unit, wherein the processing unit implements the steps of the method of controlling a refrigerator according to any one of claims 1 to 8 when executing the computer program, the number of the evaporators is at least two, and the distribution valves are used for distributing refrigerant flow rates into different evaporators.
10. A computer-readable storage medium, characterized in that it has stored thereon a computer program which, when being executed by a processing unit, implements the steps of the control method of a refrigerator according to any one of claims 1 to 8.
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| CN201810640606.XA CN108800750B (en) | 2018-06-20 | 2018-06-20 | Refrigerator control method, refrigerator and computer-readable storage medium |
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| CN201810640606.XA CN108800750B (en) | 2018-06-20 | 2018-06-20 | Refrigerator control method, refrigerator and computer-readable storage medium |
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| CN108800750B true CN108800750B (en) | 2020-05-05 |
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| KR20090048167A (en) * | 2007-11-09 | 2009-05-13 | 엘지전자 주식회사 | Cooling apparatus of refrigerator and controlling method thereof |
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| CN1465942A (en) * | 2002-06-07 | 2004-01-07 | 乐金电子(天津)电器有限公司 | Heat pump flow distributor |
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| KR20090048167A (en) * | 2007-11-09 | 2009-05-13 | 엘지전자 주식회사 | Cooling apparatus of refrigerator and controlling method thereof |
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