Control method and device of refrigerating system, refrigerator and computer readable storage medium

Abstract

The invention provides a control method and device of a refrigerating system, a refrigerator and a storage medium. In the refrigerating system, a compressor, a condenser and a liquid separator communicate in sequence; the refrigeration evaporator is communicated with the liquid separator through a first pipe interface, the freezing evaporator is communicated with the liquid separator through a second pipe interface, and the first pipe interface is lower than the second pipe interface, so that a height difference exists between the first pipe interface and the second pipe interface, and the height difference is configured to be adjustable; the control method comprises the steps that when a compressor is shut down and runs, the first real-time refrigeration temperature of a refrigeration chamber is obtained; when the first real-time refrigeration temperature reaches the starting point temperature, a compressor is controlled to be started; the freezing temperature of the freezing chamber and the second real-time refrigeration temperature of the refrigeration chamber are obtained; if the freezing temperature is larger than the first preset temperature, the height difference is adjusted to be reduced; if the freezing temperature is smaller than the second preset temperature, the height difference is adjusted to be increased; the first preset temperature is higher than the second preset temperature; and when the second real-time refrigeration temperature reaches the refrigeration shutdown point temperature, the compressor is controlled to be shut down.

Description

Technical Field

[0001] The present application relates to the technical field of refrigerators, and particularly to a control method, device, refrigerator and computer-readable storage medium for a refrigeration system. Background Art

[0002] Dual-system refrigerators are the key development objects in the refrigerator industry. A dual-system refrigerator includes a refrigerating evaporator and a freezing evaporator. In the prior art, a three-way valve with 1 inlet and 2 outlets is set to control the flow direction of the refrigerant. When the two outlets of the three-way valve are opened simultaneously, the refrigerant can enter the refrigerating evaporator and the freezing evaporator. However, the distribution flow rate of the refrigerant cannot be controlled, resulting in the failure to meet the freezing and refrigerating requirements of the refrigerator. Summary of the Invention

[0003] The present application provides a control method, device, refrigerator and computer-readable storage medium for a refrigeration system, aiming to solve the technical problem that in the prior art, the distribution flow rate of the refrigerant cannot be controlled, resulting in the failure to meet the freezing and refrigerating requirements of the refrigerator.

[0004] In a first aspect, the present application proposes a control method for a refrigeration system. The refrigeration system includes a compressor, a condenser, a liquid distributor, a refrigerating evaporator and a freezing evaporator; the compressor, the condenser and the liquid distributor are sequentially connected; the refrigerating evaporator is connected to the liquid distributor through a first pipe interface, and the freezing evaporator is connected to the liquid distributor through a second pipe interface. Both the first pipe interface and the second pipe interface are provided on the liquid distributor, and the first pipe interface is arranged lower than the second pipe interface so as to have a height difference therebetween, and the height difference is configured to be adjustable; the control method includes:

[0005] When the compressor stops running, obtain the first real-time refrigerating temperature of the refrigerating compartment;

[0006] When the first real-time refrigerating temperature reaches the starting point temperature, control the compressor to turn on;

[0007] Obtain the freezing temperature of the freezing compartment and the second real-time refrigerating temperature of the refrigerating compartment;

[0008] If the freezing temperature is greater than a first preset temperature, adjust the height difference to decrease;

[0009] If the freezing temperature is less than a second preset temperature, adjust the height difference to increase; the first preset temperature is greater than the second preset temperature;

[0010] When the second real-time refrigerating temperature reaches the refrigerating shutdown point temperature, control the compressor to turn off.

[0011] Optionally, the obtaining of the freezing temperature of the freezing compartment includes:

[0012] When the compressor is turned on, obtain the freezing temperature of the freezing compartment.

[0013] Optionally, the control method further includes:

[0014] Obtain the ambient temperature and / or the refrigeration gear;

[0015] Determine a first preset temperature and a second preset temperature according to the ambient temperature and / or the refrigeration gear.

[0016] Optionally, the difference between the first preset temperature and the second preset temperature is 2°C.

[0017] Optionally, if the freezing temperature is greater than the first preset temperature, adjusting the height difference to decrease includes:

[0018] If the freezing temperature is greater than the first preset temperature and less than the third preset temperature, adjust the height difference to decrease by a first height;

[0019] If the freezing temperature is greater than the third preset temperature, adjust the height difference to decrease by a second height and / or control the compressor to run at an increased speed; wherein, the second height is greater than the first height.

[0020] Optionally, if the freezing temperature is less than the second preset temperature, adjusting the height difference to increase includes:

[0021] If the freezing temperature is less than the second preset temperature and greater than the fourth preset temperature, adjust the height difference to increase by a third height;

[0022] If the freezing temperature is less than the fourth preset temperature, adjust the height difference to increase by a fourth height and / or control the compressor to run at a reduced speed; the fourth height is greater than the third height.

[0023] Optionally, the outlet of the refrigerating evaporator is communicated with the inlet of the freezing evaporator, and the outlet of the freezing evaporator is communicated with the inlet of the compressor.

[0024] In a second aspect, the present application also proposes a control device for a refrigeration system, the device includes: the refrigeration system includes a compressor, a condenser, a liquid distributor, a refrigerating evaporator and a freezing evaporator; the compressor, the condenser and the liquid distributor are sequentially conducted; the refrigerating evaporator is conducted with the liquid distributor through a first pipe interface, the freezing evaporator is conducted with the liquid distributor through a second pipe interface, both the first pipe interface and the second pipe interface are arranged on the liquid distributor, and the first pipe interface is arranged lower than the second pipe interface so that there is a height difference between the two, and the height difference is configured to be adjustable; the control device includes:

[0025] An acquisition module, configured to acquire the first real-time refrigeration temperature of the refrigerated compartment when the compressor is shut down and operating.

[0026] A control module, configured to control the compressor to turn on when the first real-time refrigeration temperature reaches the start-up point temperature.

[0027] The acquisition module is further configured to acquire the freezing temperature of the freezer compartment and the second real-time refrigeration temperature of the refrigerated compartment.

[0028] An adjustment module, configured to adjust the height difference to decrease if the freezing temperature is greater than a first preset temperature; and adjust the height difference to increase if the freezing temperature is less than a second preset temperature.

[0029] The control module, configured to control the compressor to turn off when the second real-time refrigeration temperature reaches the refrigeration shutdown point temperature.

[0030] Optionally, the present application further provides a refrigerator, which includes a controller configured to execute the steps in the control method of the refrigeration system as described above.

[0031] The embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored, and the computer program is loaded by a processor to execute the steps in the control method of the refrigeration system as described above.

[0032] In the technical solution of the embodiments of the present application, by setting the first pipe interface lower than the second pipe interface, the refrigerated evaporator can be allocated more refrigerant; and the temperature of the refrigerated compartment is used as the judgment index for turning on or off the compressor, that is, when the compressor is shut down and operating, if the first real-time refrigeration temperature of the refrigerated compartment reaches the start-up point temperature, the compressor turns on, and at this time the refrigeration system starts to refrigerate; and the cold quantity supply of the freezer compartment is controlled by the freezing temperature; when the freezing temperature is greater than the first preset temperature, the temperature of the freezer compartment is relatively high at this time, then the height difference is adjusted to decrease to increase the refrigerant flow rate into the freezer evaporator; and when the freezing temperature is less than the second preset temperature, the temperature of the freezer compartment decreases relatively, and at this time the height difference is adjusted to increase to reduce the refrigerant flow rate into the freezer evaporator, so as to expect the compressor to stop when the second real-time temperature in the refrigerated compartment reaches the refrigeration shutdown point temperature, and at the same time meet the refrigeration requirements of freezing and refrigeration. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention, and those skilled in the art can obtain other drawings without creative efforts based on these drawings.

[0034] Figure 1 is a schematic structural diagram of the refrigeration system provided by the embodiment of the present application;

[0035] Figure 2 is a schematic structural diagram of the refrigerator provided by the embodiment of the present application;

[0036] Figure 3 is a schematic structural diagram of the liquid distributor provided by the embodiment of the present application;

[0037] Figure 4 is a schematic flowchart of an embodiment of the control method of the refrigeration system provided by the embodiment of the present application;

[0038] Figure 5 is a schematic sub - flowchart of step S401 in the control method of the refrigeration system provided by the embodiment of the present application;

[0039] Figure 6 is a schematic sub - flowchart of step S402 in the control method of the refrigeration system provided by the embodiment of the present application;

[0040] Figure 7 is a schematic structural diagram of the control device of the refrigeration system provided by the embodiment of the present application.

[0041] List of reference numerals

[0042] 10 Liquid distributor 60 Compressor 11 Refrigerant inlet 70 Condenser 12 Cavity 80 Drier filter 13 Wall of the device 32 Movable sleeve 20 First throttling element 110 Refrigerating compartment 21 First pipe connection 120 Freezing compartment 30 Second throttling element 100 Refrigerator 31 Second pipe connection 01 Acquisition module 32 Movable sleeve 02 Control module 40 Refrigerating evaporator 03 Adjustment module 50 Freezing evaporator Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0045] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or explanation". Any embodiment described as "exemplary" in this application is not necessarily to be construed as more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the present invention. In the following description, details are set forth for the purpose of explanation. It should be understood that those of ordinary skill in the art can recognize that the present invention can be practiced without these specific details. In other instances, well-known structures and processes are not described in detail to avoid unnecessary details from obscuring the description of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed in this application.

[0046] The embodiments of the present application provide a control method, device, refrigerator, and computer-readable storage medium for a refrigeration system, which will be described in detail below respectively.

[0047] As Figure 1 shown, the embodiments of the present application propose a refrigeration system. As Figure 2As shown, the refrigeration system is applied to a dual-system refrigerator 100. The refrigeration system includes a compressor 60, a condenser 70, a liquid distributor 10, a refrigerating evaporator 40, and a freezing evaporator 50. The compressor 60, the condenser 70, and the liquid distributor 10 are sequentially connected; the refrigerating evaporator 40 is connected to the liquid distributor 10 through a first pipe interface 21, and the freezing evaporator 50 is connected to the liquid distributor 10 through a second pipe interface 31. Both the first pipe interface 21 and the second pipe interface 31 are provided on the liquid distributor 10, and the first pipe interface 21 is arranged lower than the second pipe interface 31 so that there is a height difference between the two, and the height difference is configured to be adjustable. In the refrigeration system of the embodiment of the present application, when the refrigerant liquid level in the liquid distributor 10 is relatively low, the refrigerant can only enter the refrigerating evaporator 40 through the first pipe interface 21, absorb heat and evaporate in the refrigerating evaporator 40, and provide a refrigeration effect for the refrigerating compartment 110. When the refrigerant liquid level in the liquid distributor 10 is relatively high, the refrigerant can enter the refrigerating evaporator 40 through the first pipe interface 21 or enter the freezing evaporator 50 through the second pipe interface 31. Since the first pipe interface 21 is lower than the second pipe interface 31, the pressure at the first pipe interface 21 is greater, so that the refrigerant distributed to the refrigerating evaporator 40 is relatively more.

[0048] In the technical solution of the embodiment of the present application, the height difference between the first pipe interface 21 and the second pipe interface 31 is configured to be adjustable, so that the distribution amount of the refrigerant can be adjusted to adapt to different requirements of freezing and refrigeration. For example, the second pipe interface 31 extends into the cavity 12 of the liquid distributor 10, and a movable sleeve 32 is sleeved outside the second pipe interface 31. The movable sleeve 32 is configured to slide along the extending direction of the second pipe interface 31, and the second pipe interface 31 is connected to the inside of the cavity 12 through the movable sleeve 32. As Figure 3 shown, the liquid distributor 10 in the refrigeration system proposed in the embodiment of the present application. As Figure 3 shown, the movable sleeve 32 is sleeved at the second pipe interface 31. When the movable sleeve 32 moves, the inlet of the movable sleeve 32 serves as the inlet for the refrigerant to enter the second pipe interface 31, and has a height difference from the refrigerant liquid level, so that the distribution of the refrigerant can be adjusted, so that the refrigeration system can adapt to more refrigeration requirements; when more refrigerant needs to be distributed to the freezing evaporator 50, the height difference between the second pipe interface 31 and the refrigerant liquid level can be lowered.

[0049] For another example, in some embodiments, the first pipe interface 21 extends into the cavity 12 of the liquid distributor 10, and there is also a movable sleeve 32 on the first pipe interface 21. That is, the height difference between the first pipe interface 21 and the second pipe interface 31 can be adjusted by adjusting the liquid level height at the refrigerant inlet 11 of the first pipe interface 21.

[0050] In an embodiment, a first throttling element 20 is provided between the liquid distributor 10 and the refrigerating evaporator 40, and a second throttling element 30 is provided between the liquid distributor 10 and the freezing evaporator 50. The first throttling element 20 and the second throttling element 30 are capillary tubes or expansion valves.

[0051] The refrigeration principle of the refrigeration system provided by the embodiment of the present application is as follows: The compressor 60 compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant enters the condenser 70 through a pipeline. In the condenser 70, the high-temperature and high-pressure gaseous refrigerant is condensed and then enters the liquid distributor 10 (it can also enter the dryer filter 80 and then enter the liquid distributor 10). When the refrigerant liquid level in the liquid distributor 10 is low, the refrigerant can only enter the first capillary tube through the first pipe interface 21, and after passing through the first capillary tube, it enters the refrigerating evaporator 40, where it absorbs heat and evaporates to provide refrigeration for the refrigerating compartment 110. When the refrigerant liquid level in the liquid distributor 10 is high, the refrigerant can enter the first capillary tube through the first pipe interface 21 or enter the second capillary tube through the second pipe interface 31. Since the first pipe interface 21 is lower than the second pipe interface 31, the pressure at the first pipe interface 21 is greater, so that more refrigerant is distributed to the refrigerating evaporator 40; the refrigerant after passing through the first capillary tube enters the refrigerating evaporator 40, where it absorbs heat and evaporates to provide refrigeration for the refrigerating compartment 110; the refrigerant passing through the second capillary tube enters the freezing evaporator 50, where it absorbs heat and evaporates to provide refrigeration for the freezing compartment 120. The gaseous refrigerant evaporated in the refrigerating evaporator 40 and the freezing evaporator 50 returns to the compressor 60 through the refrigerant branch to complete a refrigeration cycle. By adjusting the height difference between the two, the distribution of the refrigerant can be adjusted to adapt to different working conditions, so that the refrigerator 100 can meet the normal refrigeration and freezing requirements.

[0052] In the above embodiment, the refrigerator 100 can be a direct-cooling refrigerator 100, as Figure 2 shown. The refrigerator 100 can also be an air-cooling refrigerator 100. A refrigerating compartment 110 and a freezing compartment 120 are provided inside the cabinet of the refrigerator 100. The refrigerating evaporator 40 is configured to provide cooling capacity to the refrigerating compartment 110; the freezing evaporator 50 is configured to provide cooling capacity to the freezing compartment 120. The refrigerator 100 further includes a controller, which is used to execute to implement the control method of the refrigeration system provided in the embodiment of the present application.

[0053] As Figure 3The structure of a liquid distributor 10 is exemplified. The liquid distributor 10 includes a wall 13, a refrigerant inlet 11, and a cavity 12 defined by the wall 13. A first pipe interface 21 is provided at the bottom of the wall 13, and the refrigerant inlet 11 is provided at the top of the wall 13. A second pipe interface 31 extends into the cavity 12 and is slidably connected to a movable sleeve 32. The movable sleeve 32 can be driven by a motor through a linear motion mechanism to adjust the height difference.

[0054] Combined with the refrigeration system of the above embodiments and as Figure 4 shown, an embodiment of the present application proposes a control method for a refrigeration system. As Figure 4 shown, the control method includes:

[0055] S100, when the compressor stops operating, obtain the first real-time refrigeration temperature of the refrigerated compartment;

[0056] S200, when the first real-time refrigeration temperature reaches the startup point temperature, control the compressor to turn on;

[0057] S300, obtain the freezing temperature of the freezer compartment and the second real-time refrigeration temperature of the refrigerated compartment;

[0058] S401, if the freezing temperature is greater than the first preset temperature, adjust the height difference to decrease;

[0059] S402, if the freezing temperature is less than the second preset temperature, adjust the height difference to increase; the first preset temperature is greater than the second preset temperature;

[0060] S500, when the second real-time refrigeration temperature reaches the refrigeration shutdown point temperature, control the compressor to turn off.

[0061] In the technical solution of the embodiment of the present application, by setting the first pipe interface lower than the second pipe interface, the refrigerated evaporator can be allocated more refrigerant; and the temperature of the refrigerated compartment is used as the judgment index for turning on or off the compressor, that is, when the compressor stops operating, if the first real-time refrigeration temperature of the refrigerated compartment reaches the startup point temperature, the compressor turns on, and at this time the refrigeration system starts to refrigerate; and the cold quantity supply of the freezer compartment is controlled by the freezing temperature; when the freezing temperature is greater than the first preset temperature, at this time the temperature of the freezer compartment is relatively high, then the height difference is adjusted to decrease to increase the refrigerant flow rate into the freezer evaporator; and when the freezing temperature is less than the second preset temperature, the temperature of the freezer compartment is relatively low, and at this time the height difference is adjusted to increase to reduce the refrigerant flow rate into the freezer evaporator, in order to make the compressor stop when the second real-time temperature in the refrigerated compartment reaches the refrigeration shutdown point temperature, and meet the refrigeration requirements of both freezing and refrigeration at the same time.

[0062] In the technical solution of the embodiment of the present application, using the temperature of the refrigerated compartment as the index for controlling the start-up and shutdown of the compressor can avoid the problem of overcooling in the refrigerated compartment and freezing of refrigerated food materials (vegetables, fruits) caused by using the temperature of the frozen compartment as the index. Moreover, in the actual application process, the temperature in the frozen compartment is relatively more stable, while the temperature of the refrigerated compartment is more affected by the ambient temperature. Therefore, the temperature of the refrigerated compartment is used as the index for controlling the start-up and shutdown of the compressor. The temperature adjustment of the frozen compartment is achieved by comparing the temperature of the frozen compartment with the pre-set first preset temperature and second preset temperature when the compressor is running, and then adjusting the refrigerant amount allocated to the frozen evaporator.

[0063] In some embodiments, when the freezing temperature is between the second preset temperature and the first preset temperature, the height difference is the basic height difference; when the height difference is the basic height difference and the compressor runs until it shuts down, the temperature in the frozen compartment can basically or can reach the set freezing temperature. For example, after a refrigeration cycle is completed, the frozen compartment reaches the set freezing temperature; during the process of the refrigeration system entering the next refrigeration cycle, the temperature in the frozen compartment is in a steady-state change (for example, the frozen compartment is not opened and the ambient temperature is stable). When entering the next refrigeration cycle, the temperature in the frozen compartment rises from the set freezing temperature to between the second preset temperature and the first preset temperature. At this time, the height difference is the basic height difference, and without adjusting the height difference, it can meet the requirement that when the second real-time refrigeration temperature reaches the refrigeration shutdown point temperature and the compressor shuts down, the temperature in the frozen compartment can basically or can reach the set freezing temperature to ensure the freezing effect.

[0064] If the frozen compartment is in a non-steady-state change (such as opening the frozen compartment) or the refrigerated compartment is in a non-steady state, the height difference will change based on the basic height difference; for example, when the freezing temperature is higher than the first preset temperature, the height difference decreases based on the basic height difference; when the freezing temperature is lower than the second preset temperature (for example, the temperature of the refrigerated compartment quickly reaches the start-up point temperature while the freezing temperature has not yet risen to the second preset temperature temporarily), the height difference increases based on the basic height difference, so as to ensure that when the second real-time refrigeration temperature reaches the refrigeration shutdown point temperature and the compressor shuts down, the temperature in the frozen compartment can basically or can reach the set freezing temperature to ensure the freezing effect.

[0065] That is, in some embodiments, as Figure 4 shown, the control method further includes:

[0066] If the freezing temperature is less than the first preset temperature and greater than the second preset temperature, the height difference is the basic height difference;

[0067] S401, if the freezing temperature is greater than the first preset temperature, adjust the height difference to decrease based on the basic height difference;

[0068] S402, if the freezing temperature is less than the second preset temperature, adjust to increase the height difference on the basis of the basic height difference.

[0069] In the above embodiments, the basic height difference is a set index of the refrigeration system, which is determined through experiments on the performance of the refrigeration system, and thus is not specifically limited.

[0070] As an alternative implementation of the above embodiment, obtaining the freezing temperature of the freezing compartment includes: obtaining the freezing temperature of the freezing compartment when the compressor is turned on. That is, in the embodiment, the adjustment of the height difference is determined according to the freezing temperature of the freezing compartment when the compressor is turned on. If the freezing temperature is higher than the first preset temperature, adjust the height difference to decrease; if the freezing temperature is lower than the second preset temperature, adjust the height difference to increase, so as to control the temperature in the freezing compartment during the refrigeration process.

[0071] As an alternative implementation of the above embodiment, the control method further includes: obtaining the ambient temperature and / or the refrigeration gear; determining the first preset temperature and the second preset temperature according to the ambient temperature and / or the refrigeration gear. In the embodiment, the first preset temperature and the second preset temperature are variables associated with the refrigeration gear and / or the ambient temperature, so as to ensure that the freezing compartment has different gear adjustment effects and / or the adaptability to ambient temperature changes. In the embodiment, a mapping relationship between the ambient temperature and / or the refrigeration gear and the first preset temperature and the second preset temperature is pre-stored, and this mapping relationship can be a table, a formula, etc. This mapping relationship is obtained through performance tests on the refrigeration system, in order to meet the freezing requirements while achieving the refrigeration effect.

[0072] For example, in some embodiments, the refrigeration gears are normal freezing and deep freezing, and the ambient temperature is divided into low temperature (below 10°C), normal temperature (10 - 25°C), and high temperature (above 25°C). The following is an example of a mapping relationship:

[0073] Normal freezing Deep freezing Low temperature <![CDATA[T 11 / T 21 > <![CDATA[T 12 / T 22 > Normal temperature <![CDATA[T 13 / T 23 > <![CDATA[T 14 / T 24 > High temperature <![CDATA[T 15 / T 25 > <![CDATA[T 16 / T 26 >

[0074] In the above mapping table, T 11 represents the first preset temperature when the ambient temperature is low and the refrigeration gear is normal freezing, T 21 represents the second preset temperature when the ambient temperature is low and the refrigeration gear is normal freezing, and so on. The above are only some examples. According to the different requirements of the refrigerator for temperature control accuracy and reliability, the refrigeration gears can be set to different gears, the ambient temperature can be divided into different range intervals, and thus the number of the first preset temperature and the second preset temperature is also different.

[0075] As an alternative implementation of the above embodiment, the difference between the first preset temperature and the second preset temperature is 2°C. In some embodiments, the magnitude of the difference determines the control accuracy of the refrigeration system. The smaller the difference, the more accurate the temperature control of the freezer compartment, but the corresponding control reliability will decrease. Therefore, in order to balance both temperature control accuracy and reliability, the difference between the first preset temperature and the second preset temperature is 2°C.

[0076] As an alternative implementation of the above embodiment, as Figure 5 shown, if the freezing temperature is greater than the first preset temperature, the adjustment of reducing the height difference includes:

[0077] S4011, if the freezing temperature is greater than the first preset temperature and less than the third preset temperature, adjust the height difference to reduce the first height;

[0078] S4012, if the freezing temperature is greater than the third preset temperature, adjust the height difference to reduce the second height and / or control the compressor to run at an increased speed; wherein, the second height is greater than the first height.

[0079] In the embodiment, when the refrigeration system is refrigerating, the temperature in the freezer compartment is higher than the first preset temperature but lower than the third preset temperature. At this time, adjust the height difference to reduce the first height. And when the refrigeration system is refrigerating, the temperature in the freezer compartment may be even higher, such as exceeding the set third preset temperature. At this time, it is necessary to increase the cooling speed of the freezer compartment. Therefore, by adjusting the height difference to reduce the larger second height, more refrigerant can be obtained; and / or by increasing the rotation speed of the compressor, the refrigeration efficiency can be improved to meet the freezing demand for the rapid cooling of the freezer compartment.

[0080] In some embodiments, the height difference is reduced by the second height on the basis of the basic height difference. And when the freezing temperature decreases from being greater than the third preset temperature to the freezing temperature being greater than the first preset temperature and less than the third preset temperature, the height difference is adjusted to be reduced by the first height on the basis of the basic height difference; further, when the freezing temperature decreases from being greater than the first preset temperature to being less than the first preset temperature and greater than the second preset temperature, the height difference is adjusted to the basic height difference.

[0081] As an alternative implementation of the above embodiment, as Figure 6 shown, if the freezing temperature is less than the second preset temperature, the adjustment of increasing the height difference includes:

[0082] S4021, if the freezing temperature is less than the second preset temperature and greater than the fourth preset temperature, adjust the height difference to increase the third height;

[0083] S4022. If the freezing temperature is less than the fourth preset temperature, adjust the height difference to increase the fourth height and / or control the compressor to run at a reduced speed; the fourth height is greater than the third height.

[0084] In an embodiment, when the refrigeration system is refrigerating, the temperature in the freezing compartment is lower than the second preset temperature but higher than the fourth preset temperature. At this time, adjust the height difference to increase the third height. And when the refrigeration system is refrigerating, the temperature in the freezing compartment may be even lower, for example, lower than the set fourth preset temperature. At this time, it is necessary to slow down the cooling speed of the freezing compartment to adapt to the change of the refrigerated temperature. Therefore, by adjusting the height difference to increase a larger fourth height, less refrigerant can be obtained; and / or by reducing the rotational speed of the compressor.

[0085] As an alternative implementation of the above embodiment, as Figure 1 shown, the outlet of the refrigerated evaporator is communicated with the inlet of the freezing evaporator, and the outlet of the freezing evaporator is communicated with the inlet of the compressor. In an embodiment, the refrigerant flowing out of the refrigerated evaporator can flow into the freezing evaporator to supplement the refrigerant amount in the freezing evaporator. For example, in some embodiments, the temperature of the freezing compartment meets the freezing requirement, and at this time, the refrigerated compartment needs to be refrigerated. At this time, the height difference can be adjusted to the maximum value, and the refrigerant in the freezing evaporator does not receive refrigerant from the distributor and all passes through the refrigerated evaporator; at this time, the refrigerant after heat exchange in the refrigerated evaporator flows into the freezing evaporator, which can provide the cold energy to maintain the current temperature of the freezing compartment and reduce energy consumption.

[0086] In the technical solution of the embodiment of the present application, if the freezing temperature is equal to the first preset temperature, adjust the height difference to decrease; if the freezing temperature is equal to the second preset temperature, adjust the height difference to increase.

[0087] Further, if the freezing temperature is equal to the third preset temperature, adjust the height difference to decrease the first height or adjust the height difference to decrease the second height and / or control the compressor to run at an increased speed.

[0088] If the freezing temperature is equal to the fourth preset temperature, adjust the height difference to increase the third height, or adjust the height difference to increase the fourth height and / or control the compressor to run at a reduced speed.

[0089] To better implement the control method of the refrigeration system in the embodiment of the present application, on the basis of the control method of the refrigeration system, the embodiment of the present application also provides a control device for the refrigeration system, as Figure 7 shown, the control device of the refrigeration system includes:

[0090] An acquisition module 01, configured to acquire the first real-time refrigerated temperature of the refrigerated compartment when the compressor stops running;

[0091] The control module 02 is configured to control the compressor to turn on when the first real-time refrigeration temperature reaches the startup point temperature;

[0092] The acquisition module is further configured to acquire the freezing temperature of the freezing compartment and the second real-time refrigeration temperature of the refrigerating compartment;

[0093] The adjustment module 03 is configured to adjust the height difference to decrease if the freezing temperature is greater than a first preset temperature; and to adjust the height difference to increase if the freezing temperature is less than a second preset temperature;

[0094] The control module 02 is configured to control the compressor to turn off when the second real-time refrigeration temperature reaches the refrigeration shutdown point temperature.

[0095] An embodiment of the present application also provides a control system for a refrigeration system, including: one or more processors; a memory; and one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the control method of the refrigeration system as described above.

[0096] Generally, the control system of the refrigeration system includes: at least one processor, at least one memory, and a control program of the control system of the refrigeration system stored on the memory and executable on the processor, and the control program of the control system of the refrigeration system is configured to implement the steps of the control method as described above.

[0097] The processor may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor may be implemented in at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), or PLA (Programmable Logic Array). The processor may also include a main processor and a coprocessor. The main processor is a processor for processing data in the wake state, also known as the CPU (Central Processing Unit); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor may be integrated with a GPU (Graphics Processing Unit), and the GPU is responsible for rendering and drawing the content to be displayed on the display screen. The processor may also include an AI (Artificial Intelligence) processor, which is used to process the control method operations of the control system of the refrigeration system, so that the control method model of the control system of the refrigeration system can be autonomously trained and learned to improve efficiency and accuracy.

[0098] The memory may include one or more computer-readable storage media, and the computer-readable storage media may be non-transitory. The memory may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices and flash storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory is used to store at least one instruction, and the at least one instruction is used to be executed by the processor to implement the control method of the refrigeration system provided in the method embodiments of the present application.

[0099] When the compressor stops running, obtain the first real-time refrigeration temperature of the refrigerated compartment.

[0100] When the first real-time refrigeration temperature reaches the start-up point temperature, control the compressor to turn on.

[0101] Obtain the freezing temperature of the freezer compartment and the second real-time refrigeration temperature of the refrigerated compartment.

[0102] If the freezing temperature is greater than the first preset temperature, adjust the height difference to decrease.

[0103] If the freezing temperature is less than the second preset temperature, adjust the height difference to increase; the first preset temperature is greater than the second preset temperature.

[0104] When the second real-time refrigeration temperature reaches the refrigeration shutdown point temperature, control the compressor to shut down.

[0105] Optionally, the obtaining of the freezing temperature of the freezing compartment includes:

[0106] When the compressor is turned on, obtain the freezing temperature of the freezing compartment.

[0107] Optionally, the control method further includes:

[0108] Obtain the ambient temperature and / or the refrigeration gear;

[0109] According to the ambient temperature and / or the refrigeration gear, determine a first preset temperature and a second preset temperature.

[0110] Optionally, the difference between the first preset temperature and the second preset temperature is 2°C.

[0111] Optionally, if the freezing temperature is greater than the first preset temperature, the adjustment of reducing the height difference includes:

[0112] If the freezing temperature is greater than the first preset temperature and less than the third preset temperature, adjust the height difference to reduce the first height;

[0113] If the freezing temperature is greater than the third preset temperature, adjust the height difference to reduce the second height and / or control the compressor to run at an increased speed; wherein, the second height is greater than the first height.

[0114] Optionally, if the freezing temperature is less than the second preset temperature, the adjustment of increasing the height difference includes:

[0115] If the freezing temperature is less than the second preset temperature and greater than the fourth preset temperature, adjust the height difference to increase the third height;

[0116] If the freezing temperature is less than the fourth preset temperature, adjust the height difference to increase the fourth height and / or control the compressor to run at a reduced speed; the fourth height is greater than the third height.

[0117] Optionally, the outlet of the refrigeration evaporator is communicated with the inlet of the freezing evaporator, and the outlet of the freezing evaporator is communicated with the inlet of the compressor.

[0118] The above has introduced in detail the control method, device, refrigerator and computer-readable storage medium of the refrigeration system provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A control method for a refrigeration system, characterized in that, The refrigeration system includes a compressor, a condenser, a liquid distributor, a refrigerated evaporator, and a frozen evaporator; the compressor, the condenser, and the liquid distributor are sequentially connected; the refrigerated evaporator is connected to the liquid distributor through a first pipe interface, and the frozen evaporator is connected to the liquid distributor through a second pipe interface. Both the first pipe interface and the second pipe interface are provided on the liquid distributor, and the first pipe interface is arranged lower than the second pipe interface so that there is a height difference between them, and the height difference is configured to be adjustable; the control method includes: When the compressor stops running, obtain the first real-time refrigeration temperature of the refrigerated compartment. When the first real-time refrigeration temperature reaches the startup point temperature, control the compressor to turn on. Obtain the freezing temperature of the frozen compartment and the second real-time refrigeration temperature of the refrigerated compartment. If the freezing temperature is greater than a first preset temperature, adjust the height difference to decrease. If the freezing temperature is less than a second preset temperature, adjust the height difference to increase; the first preset temperature is greater than the second preset temperature. When the second real-time refrigeration temperature reaches the refrigeration shutdown point temperature, control the compressor to turn off.

2. The control method of the refrigeration system according to claim 1, characterized in that, The obtaining of the freezing temperature of the frozen compartment includes: When the compressor turns on, obtain the freezing temperature of the frozen compartment.

3. The control method of the refrigeration system according to claim 1, characterized in that The control method further includes: Obtain the ambient temperature and / or the refrigeration gear. Determine the first preset temperature and the second preset temperature according to the ambient temperature and / or the refrigeration gear.

4. The control method of the refrigeration system according to claim 1, characterized in that, The difference between the first preset temperature and the second preset temperature is 2°C.

5. The control method of the refrigeration system according to claim 1, characterized in that If the freezing temperature is greater than the first preset temperature, adjusting the height difference to decrease includes: If the freezing temperature is greater than the first preset temperature and less than a third preset temperature, adjust the height difference to decrease by a first height. If the freezing temperature is greater than the third preset temperature, adjust the height difference to decrease by a second height and / or control the compressor to run at an increased speed; wherein, the second height is greater than the first height.

6. The control method of the refrigeration system according to claim 1, characterized in that, If the freezing temperature is less than the second preset temperature, adjusting the height difference to increase includes: If the freezing temperature is less than the second preset temperature and greater than a fourth preset temperature, adjust the height difference to increase by a third height. If the freezing temperature is less than the fourth preset temperature, adjust the height difference to increase by a fourth height and / or control the compressor to run at a decreased speed; the fourth height is greater than the third height.

7. The control method of the refrigeration system according to claim 1, characterized in that, The outlet of the refrigerated evaporator is communicated with the inlet of the frozen evaporator, and the outlet of the frozen evaporator is communicated with the inlet of the compressor.

8. A control device for a refrigeration system, characterized in that, The device includes: The refrigeration system includes a compressor, a condenser, a liquid distributor, a refrigerated evaporator, and a frozen evaporator; the compressor, the condenser, and the liquid distributor are sequentially connected; the refrigerated evaporator is connected to the liquid distributor through a first pipe interface, and the frozen evaporator is connected to the liquid distributor through a second pipe interface. Both the first pipe interface and the second pipe interface are provided on the liquid distributor, and the first pipe interface is arranged lower than the second pipe interface so that there is a height difference between them, and the height difference is configured to be adjustable; the control device includes: An acquisition module, configured to acquire a first real-time refrigeration temperature of a refrigerated compartment when the compressor stops operating; A control module, configured to control the compressor to turn on when the first real-time refrigeration temperature reaches a startup point temperature; The acquisition module is further configured to acquire a freezing temperature of a freezer compartment and a second real-time refrigeration temperature of the refrigerated compartment; An adjustment module, configured to adjust the height difference to decrease if the freezing temperature is greater than a first preset temperature; and to adjust the height difference to increase if the freezing temperature is less than a second preset temperature; The control module, configured to control the compressor to turn off when the second real-time refrigeration temperature reaches a refrigeration shutdown point temperature.

9. A refrigerator, characterized in that, The refrigerator includes a controller, and the controller is configured to execute steps in the control method of the refrigeration system according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, A computer program is stored thereon, and the computer program is loaded by a processor to execute steps in the control method of the refrigeration system according to any one of claims 1 to 7.

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