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 computer readable storage medium. In the refrigerating system, a compressor, a condenser and a liquid separator are sequentially communicated, the liquid separator is communicated with a refrigerating evaporator and a freezing evaporator, the refrigerant amount distributed by the refrigerating evaporator can be larger than that distributed by the freezing evaporator, and the refrigerating evaporator and the freezing evaporator are communicated with the compressor; the control method comprises the steps that when a compressor is shut down, the first real-time temperature of a refrigeration chamber is obtained; when the first real-time temperature reaches the refrigeration starting point temperature, a compressor is controlled to start and operate, a refrigeration fan is controlled to start and operate, and a freezing fan is controlled to start and operate; acquiring a second real-time temperature of the freezing chamber; according to the second real-time temperature and the preset temperature, the operation rotating speed of a refrigeration fan and the operation rotating speed of a freezing fan are adjusted; acquiring a third real-time temperature of the refrigerating chamber; and when the third real-time temperature reaches the refrigeration shutdown point temperature, the compressor, the refrigeration fan and the freezing fan are 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 and device for a refrigeration system, a refrigerator, and a computer-readable storage medium. Background Art

[0002] In existing dual-system refrigerators, a refrigerating evaporator and a freezing evaporator are connected to a three-way valve with one inlet and two outlets. This three-way valve is used to switch the flow direction of the refrigerant. However, when the outlets of the three-way valve are opened simultaneously, the flow rate of the refrigerant entering the refrigerating evaporator and the freezing evaporator cannot be controlled. Especially at high ambient temperatures, the refrigerating evaporator obtains less refrigerant, which may make it difficult for the refrigerating compartment and the freezing compartment to reach their respective refrigeration demand temperatures simultaneously. Summary of the Invention

[0003] The present application provides a control method and device for a refrigeration system, a refrigerator, and a computer-readable storage medium, aiming to solve the technical problem in the prior art that it is basically difficult for the refrigerating compartment and the freezing compartment to reach their respective refrigeration demand temperatures simultaneously.

[0004] In a first aspect, the present application further proposes a control method for a refrigeration system. The refrigeration system includes a compressor, a condenser, a liquid distributor, a refrigerating evaporator, a freezing evaporator, a refrigerating fan, and a freezing fan; the compressor, the condenser, and the liquid distributor are sequentially connected, the liquid distributor is connected to the refrigerating evaporator and the freezing evaporator, and enables the amount of refrigerant distributed to the refrigerating evaporator to be greater than the amount of refrigerant distributed to the freezing evaporator. The refrigerating evaporator and the freezing evaporator are connected to the compressor; the control method includes:

[0005] When the compressor stops, obtain the first real-time temperature of the refrigerating compartment; wherein, the refrigerating fan is configured to provide the cold quantity of the refrigerating evaporator to the refrigerating compartment;

[0006] When the first real-time temperature reaches the refrigerating start-up point temperature, control the compressor to start running, control the refrigerating fan to start running, and control the freezing fan to start running;

[0007] Obtain the second real-time temperature of the freezing compartment; wherein, the freezing fan is configured to provide the cold quantity of the freezing evaporator to the freezing compartment;

[0008] According to the second real-time temperature and the preset temperature, adjust the running speeds of the refrigerating fan and the freezing fan;

[0009] Obtain the third real-time temperature of the refrigerating compartment;

[0010] When the third real-time temperature reaches the refrigeration shutdown point temperature, control the compressor to shut down, control the refrigeration fan to shut down, and control the freezing fan to shut down.

[0011] Optionally, the preset temperature includes a first preset temperature and a second preset temperature; the first preset temperature is greater than the second preset temperature;

[0012] Adjusting the operating speeds of the refrigeration fan and the freezing fan according to the second real-time temperature and the preset temperature includes:

[0013] If the second real-time temperature is greater than the first preset temperature, then adjust the speed of the refrigeration fan to decrease and / or adjust the speed of the freezing fan to increase;

[0014] If the second real-time temperature is less than the second preset temperature, then adjust the speed of the refrigeration fan to increase and / or adjust the speed of the freezing fan to decrease.

[0015] Optionally, before adjusting the operating speeds of the refrigeration fan and the freezing fan according to the second real-time temperature and the preset temperature, the control method further includes:

[0016] Obtain the ambient temperature and / or the refrigeration gear;

[0017] Determine the first preset temperature and the second preset temperature according to the ambient temperature and / or the refrigeration gear.

[0018] Optionally, the difference between the first preset temperature and the second preset temperature is 2°C.

[0019] Optionally, the preset temperature further includes a third preset temperature; the third preset temperature is greater than the first preset temperature;

[0020] The step of if the second real-time temperature is greater than the first preset temperature, then adjust the speed of the refrigeration fan to decrease and / or adjust the speed of the freezing fan to increase includes:

[0021] If the second real-time temperature is greater than the first preset temperature and less than the third preset temperature, then adjust the speed of the refrigeration fan to decrease by a first speed and / or adjust the speed of the freezing fan to increase by a second speed;

[0022] If the second real-time temperature is greater than the third preset temperature, then adjust the speed of the refrigeration fan to decrease by a third speed and / or adjust the speed of the freezing fan to increase by a fourth speed and / or the compressor runs at an increased speed; the first speed is less than the third speed, and the second speed is less than the fourth speed.

[0023] Optionally, the preset temperature further includes a fourth preset temperature; the fourth preset temperature is less than the second preset temperature;

[0024] The step of, if the second real-time temperature is less than the second preset temperature, adjusting the rotational speed of the refrigerating fan to increase and / or adjusting the rotational speed of the freezing fan to decrease includes:

[0025] If the second real-time temperature is less than the second preset temperature and greater than the fourth preset temperature, adjusting the rotational speed of the refrigerating fan to increase by a fifth rotational speed and / or adjusting the rotational speed of the freezing fan to decrease by a sixth rotational speed;

[0026] If the second real-time temperature is less than the fourth preset temperature, adjusting the rotational speed of the refrigerating fan to increase by a seventh rotational speed and / or adjusting the rotational speed of the freezing fan to decrease by an eighth rotational speed; the fifth rotational speed is less than the seventh rotational speed, and the sixth rotational speed is less than the eighth rotational speed.

[0027] Optionally, an outlet of the refrigerating evaporator is communicated with an inlet of the freezing evaporator; an outlet of the freezing evaporator is communicated with an inlet of the compressor.

[0028] In a second aspect, the present application further provides a control device for a refrigeration system. The refrigeration system includes a compressor, a condenser, a liquid distributor, a refrigerating evaporator, a freezing evaporator, a refrigerating fan, and a freezing fan; the compressor, the condenser, and the liquid distributor are sequentially conducted, the liquid distributor is communicated with the refrigerating evaporator and the freezing evaporator, and enables the amount of refrigerant distributed to the refrigerating evaporator to be greater than the amount of refrigerant distributed to the freezing evaporator, and the refrigerating evaporator and the freezing evaporator are conducted with the compressor; the control device includes:

[0029] An acquisition module, configured to acquire a first real-time temperature of a refrigerated compartment when the compressor is shut down; wherein, the refrigerating fan is configured to provide the cold quantity of the refrigerating evaporator to the refrigerated compartment;

[0030] A control module, configured to control the compressor to start running, control the refrigerating fan to start running, and control the freezing fan to start running when the first real-time temperature reaches a refrigeration start point temperature; wherein, the freezing fan is configured to provide the cold quantity of the freezing evaporator to a frozen compartment;

[0031] The acquisition module is configured to acquire a second real-time temperature of the frozen compartment;

[0032] An adjustment module, configured to adjust the running rotational speeds of the refrigerating fan and the freezing fan according to the second real-time temperature and a preset temperature;

[0033] The obtaining module is configured to obtain the third real-time temperature of the refrigerating compartment.

[0034] The control module is configured to control the compressor to stop, control the refrigerating blower to stop, and control the freezing blower to stop when the third real-time temperature reaches the refrigerating shutdown point temperature.

[0035] In a third aspect, 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.

[0036] In a fourth aspect, the present application further provides a computer-readable storage medium, on which a computer program is stored. The computer program is loaded by a processor to execute the steps in the control method of the refrigeration system as described above.

[0037] In the technical solution of the embodiment of the present application, by allocating more refrigerant into the refrigerating evaporator, it is ensured that there is sufficient refrigerant in the refrigerating evaporator to meet the refrigeration demand of the refrigerating compartment; after the compressor stops, the first real-time temperature in the refrigerating compartment rises. When the first real-time temperature reaches the refrigerating startup point temperature, the compressor starts, the refrigerating blower starts, and the freezing blower starts to refrigerate; and because there is more refrigerant flowing in the refrigerating evaporator, the second real-time temperature of the freezing compartment is obtained, and the second real-time temperature is used as the regulation index for the operating speeds of the freezing blower and the refrigerating blower; the operating speeds of the refrigerating blower and the freezing blower are adjusted according to the second real-time temperature and the preset temperature to adjust the cold quantity supply of the refrigerating compartment and the freezing compartment, so that when the refrigerating compartment reaches the refrigerating shutdown point temperature, the temperature of the freezing compartment can meet the freezing demand, and thus the refrigerating compartment and the freezing compartment can basically reach their respective refrigeration demand temperatures simultaneously. Description of the Drawings

[0038] 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. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0039] Figure 1 is a schematic structural diagram of the refrigeration system provided by the embodiment of the present application;

[0040] Figure 2 is a schematic structural diagram of the refrigerator provided by the embodiment of the present application;

[0041] Figure 3 is a schematic structural diagram of the liquid distributor provided by the embodiment of the present application;

[0042] Figure 4 It is a schematic flowchart of an embodiment of the refrigeration method of the refrigeration system provided in the embodiments of the present application;

[0043] Figure 5 It is a schematic structural diagram of the refrigeration device of the refrigeration system provided in the embodiments of the present application.

[0044] List of reference numerals

[0045] 10 Liquid distributor 70 Condenser 11 Refrigerant inlet 80 Drier filter 12 Cavity 110 Refrigerating fan 13 Wall of the device 120 Freezing fan 20 First throttling element 130 Refrigerating compartment 21 First pipe interface 140 Freezing compartment 30 Second throttling element 100 Refrigerator 31 Second pipe interface 01 Acquisition module 40 Refrigerating evaporator 02 Control module 50 Freezing evaporator 03 Adjustment module 60 Compressor Detailed implementation manners

[0046] 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship 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 therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating 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" means two or more, unless otherwise specifically defined.

[0048] In the present application, the term "exemplary" is used to mean "serving as an example, illustration, or description". Any embodiment described as "exemplary" in the present application is not necessarily to be construed as more preferred or more advantageous than other embodiments. In order for any person skilled in the art to implement and use the present invention, the following description is given. In the following description, details are set forth for purposes of explanation. It should be understood that those of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present invention with unnecessary details. 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 the present application.

[0049] 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.

[0050] As Figure 1 shown, the embodiments of the present application propose a refrigeration system, which includes: the refrigeration system includes a compressor 60, a condenser 70, a distributor 10, a refrigerating evaporator 40, a freezing evaporator 50, a refrigerating fan 110, and a freezing fan 120; the compressor 60, the condenser 70, and the distributor 10 are sequentially connected in series, the distributor 10 is connected to the refrigerating evaporator 40 and the freezing evaporator 50, and enables the amount of refrigerant distributed to the refrigerating evaporator 40 to be greater than the amount of refrigerant distributed to the freezing evaporator 50, and the refrigerating evaporator 40 and the freezing evaporator 50 are connected to the compressor 60. In the embodiment, the amount of refrigerant distributed to the refrigerating evaporator 40 can be greater than the amount of refrigerant distributed to the freezing evaporator 50, so that the amount of refrigerant distributed to the refrigerating evaporator 40 is more, improving the refrigerating effect of the refrigeration system.

[0051] In some embodiments, there is a distributor 10 for distributing refrigerant; a first throttling element 20 is connected to the distributor 10; wherein, the first throttling element 20 has a first pipe interface 21, and the refrigerant in the distributor 10 enters the first throttling element 20 through the first pipe interface 21. A second throttling element 30 is connected to the distributor 10; wherein, the second throttling element 30 has a second pipe interface 31, and the refrigerant in the distributor 10 enters the second throttling element 30 through the second pipe interface 31; wherein, the second pipe interface 31 is arranged higher than the first pipe interface 21. The refrigerating evaporator 40 is connected to the first throttling element 20; the freezing evaporator 50 is connected to the second throttling element 30. When the refrigerant liquid level in the distributor 10 is low, the refrigerant can only enter the first capillary through the first pipe interface 21, and after passing through the first capillary, it enters the refrigerating evaporator 40, where it absorbs heat and evaporates to provide a refrigerating effect for the refrigerating compartment 130. When the refrigerant liquid level in the distributor 10 is high, the refrigerant can enter the first capillary through the first pipe interface 21 or enter the second capillary 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 enters the refrigerating evaporator 40, where it absorbs heat and evaporates to provide a refrigerating effect for the refrigerating compartment 130; the refrigerant passing through the second capillary enters the freezing evaporator 50, where it absorbs heat and evaporates to provide a refrigerating effect for the freezing compartment 140.

[0052] In the above embodiments, the first throttling element 20 and the second throttling element 30 can be one of a capillary tube or an expansion valve. For example, the first throttling element 20 and the second throttling element 30 are capillary tubes; that is, the first throttling element 20 is a first capillary tube, and the second throttling element 30 is a second capillary tube. For another example, the first throttling element 20 and the second throttling element 30 are expansion valves; for another example, one of the first throttling element 20 and the second throttling element 30 is a capillary tube, and the other is an expansion valve.

[0053] As Figure 2 shown, this refrigeration system is applied to a dual-system air-cooled refrigerator 100. The dual-system air-cooled refrigerator 100 includes a refrigerating air blower 110 and a freezing air blower 120. The installation structures of the refrigerating air blower 110 and the freezing air blower 120 and the corresponding air duct structures are not the key points of improvement in this application, and thus the structures in the prior art can be adopted. In this embodiment, the refrigerating air blower 110 is configured to supply the cold quantity of the refrigerating evaporator 40 to the refrigerating compartment 130, that is, to drive the air in the refrigerating compartment 130 to exchange heat with the refrigerating evaporator 40, so as to reduce the temperature in the refrigerating compartment 130. The freezing air blower 120 is configured to supply the cold quantity of the freezing evaporator 50 to the freezing compartment 140, that is, to drive the air in the freezing compartment 140 to exchange heat with the freezing evaporator 50, so as to reduce the temperature in the freezing compartment 140.

[0054] As Figure 3 shown, the liquid distributor 10 in the refrigeration system proposed in the embodiment of the present application. One of the first pipe interface 21 and the second pipe interface 31 extends into the cavity 12 of the liquid distributor 10, and the other is connected to the wall 13 of the liquid distributor 10 and communicates with the inside of the cavity 12 of the liquid distributor 10. For example, as Figure 3As shown, the first pipe interface 21 is provided on the wall 13 of the liquid distributor 10; the second pipe interface 31 extends into the interior of the cavity 12 of the liquid distributor 10. For another example, the first pipe interface 21 extends into the interior of the cavity 12 of the liquid distributor 10, and the second pipe interface 31 is provided on the wall 13 of the liquid distributor 10. The second pipe interface 31 extends into the interior of the cavity 12 of the liquid distributor 10, and a movable sleeve is sleeved outside the second pipe interface 31. The movable sleeve is configured to slide along the extending direction of the second pipe interface 31, and the second pipe interface 31 is in communication with the interior of the cavity 12 through the movable sleeve. For example, the movable sleeve is sleeved at the second pipe interface 31. When the movable sleeve moves, the inlet of the movable sleeve serves as the refrigerant to enter the inlet of the second pipe interface 31, and there is 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 is lowered by controlling the sliding of the movable sleeve. The motor drives a linear motion mechanism, and the linear motion mechanism drives the movable sleeve to slide at the second pipe interface 31.

[0055] As Figure 3 An example of the structure of a liquid distributor 10 is illustrated. The liquid distributor 10 includes a wall 13, a refrigerant inlet 11, and a cavity 12 defined by the wall 13. The 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. The second pipe interface 31 extends into the cavity 12. The height of the second pipe interface 31 is higher than the height of the first pipe interface 21, and there is a height difference.

[0056] The refrigeration principle of the refrigeration system provided by the embodiments 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 drying liquid distributor filter 80 and then enter the liquid distributor 10). When the refrigerant liquid level in the liquid distributor 10 is relatively low, the refrigerant can only enter the first capillary through the first pipe interface 21, and after passing through the first capillary, it enters the refrigerating evaporator 40, where it absorbs heat and evaporates to provide a refrigerating effect for the refrigerating inner container. When the refrigerant liquid level in the liquid distributor 10 is relatively high, the refrigerant can enter the first capillary through the first pipe interface 21 or enter the second capillary 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 enters the refrigerating evaporator 40, where it absorbs heat and evaporates to provide a refrigerating effect for the refrigerating inner container; the refrigerant passing through the second capillary enters the freezing evaporator 50, where it absorbs heat and evaporates to provide a refrigerating effect for the freezing inner container. 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. Combining the refrigeration system of the above embodiments and as Figure 4 shown, the embodiments of the present application propose a control method for the refrigeration system. As Figure 4 shown, the control method includes:

[0057] S100, when the compressor stops, obtain the first real-time temperature of the refrigerating compartment; wherein, the refrigerating fan is configured to provide the cold quantity of the refrigerating evaporator to the refrigerating compartment;

[0058] S200, when the first real-time temperature reaches the refrigerating start point temperature, control the compressor to start running, control the refrigerating fan to start running, and control the freezing fan to start running;

[0059] S300, obtain the second real-time temperature of the freezing compartment; wherein, the freezing fan is configured to provide the cold quantity of the freezing evaporator to the freezing compartment;

[0060] S400, adjust the running speeds of the refrigerating fan and the freezing fan according to the second real-time temperature and the preset temperature;

[0061] S500, obtain the third real-time temperature of the refrigerating compartment;

[0062] S600, when the third real-time temperature reaches the refrigerating stop point temperature, control the compressor to stop, control the refrigerating fan to stop, and control the freezing fan to stop.

[0063] In the technical solution of the embodiment of the present application, by allocating more refrigerant into the refrigerating evaporator, it is ensured that there is sufficient refrigerant in the refrigerating evaporator to meet the refrigeration requirements of the refrigerating compartment; after the compressor stops, the first real-time temperature in the refrigerating compartment rises. When the first real-time temperature reaches the refrigerating start-up point temperature, the compressor starts, the refrigerating fan starts, and the freezing fan starts to refrigerate; and because there is more refrigerant flowing in the refrigerating evaporator, the second real-time temperature of the freezing compartment is obtained, and the second real-time temperature is used as the control index for the operating speeds of the freezing fan and the refrigerating fan; the operating speeds of the refrigerating fan and the freezing fan are adjusted according to the second real-time temperature and the preset temperature to adjust the cold quantity supply of the refrigerating compartment and the freezing compartment, so that when the refrigerating compartment reaches the refrigerating stop point temperature, the temperature of the freezing compartment can meet the freezing requirements, and further the refrigerating compartment and the freezing compartment can basically reach their respective refrigeration requirement temperatures at the same time.

[0064] It should be noted that in the prior art, when the refrigerant is distributed, the refrigerating evaporator obtains relatively less refrigerant, while the freezing evaporator obtains relatively more refrigerant. Since the temperature of the freezing compartment is relatively more stable and the freezing evaporator obtains relatively more refrigerant, the freezing compartment is more likely to reach the freezing requirement temperature; during refrigeration, since the temperature of the refrigerating compartment is relatively more unstable and the rising speed is fast at high ambient temperatures, however, the refrigerating evaporator obtains relatively less refrigerant, and the refrigerating compartment is less likely to reach the refrigeration requirement temperature, thus resulting in inconsistent refrigeration cycles for the two.

[0065] In the technical solution of the embodiment of the present application, the temperature of the refrigerating compartment is used as the control index for starting the refrigeration of the refrigeration system, that is, when the temperature of the refrigerating compartment rises to the refrigerating start-up point temperature, the refrigeration system starts to refrigerate, and when the temperature of the refrigerating compartment drops to the refrigerating stop point temperature, the refrigeration system ends refrigeration; during this period, the refrigerating evaporator obtains more refrigerant, so the refrigerating compartment is likely to reach the refrigeration requirement temperature. Moreover, during the refrigeration cycle, the operating speeds of the refrigerating fan and the freezing fan are regulated by the second real-time temperature of the freezing compartment to allocate the cold quantity supply, so that when the refrigerating compartment reaches the refrigerating stop point temperature, the temperature of the freezing compartment can meet the freezing requirements, and further the refrigerating compartment and the freezing compartment can basically reach their respective refrigeration requirement temperatures at the same time.

[0066] In addition, in the technical solution of the embodiment of the present application, the temperature of the refrigerated compartment is used as a control index to control the startup and shutdown of the refrigeration system, which can avoid the problem of overcooling the refrigerated compartment and damaging vegetables during the refrigeration process when using the frozen compartment as a control index. Moreover, the frozen compartment is more likely to be in a steady state, that is, the temperature change range is not high and the temperature change speed is slow. Even in the short-term non-steady state stage caused by situations such as putting food or opening the door, where the temperature is slightly higher or lower, it will not cause food damage; if the temperature of the frozen compartment is used as a control index to control the startup and shutdown of the refrigeration system, it may lead to the problem that the refrigeration of the refrigerated compartment starts only when the temperature is too high; therefore, this problem is overcome by using the temperature of the refrigerated compartment as a control index to control the startup and shutdown of the refrigeration system.

[0067] In this embodiment, the temperature of the frozen compartment and the preset temperature have a mapping relationship with the operating speeds of the refrigerated fan and the frozen fan respectively. This mapping relationship can be a formula or a table, which is configured by those skilled in the art after testing the performance of the refrigeration system. This mapping relationship is used to ensure that when the refrigerated compartment reaches the refrigeration shutdown point temperature, the temperature of the frozen compartment meets the freezing requirements.

[0068] As an alternative implementation of the above embodiment, the preset temperature includes a first preset temperature and a second preset temperature; the first preset temperature is greater than the second preset temperature.

[0069] Adjusting the operating speeds of the refrigerated fan and the frozen fan according to the second real-time temperature and the preset temperature includes:

[0070] If the second real-time temperature is greater than the first preset temperature, then adjust the speed of the refrigerated fan to decrease and / or adjust the speed of the frozen fan to increase.

[0071] In this embodiment, when the second real-time temperature is greater than the first preset temperature, the temperature in the frozen compartment is higher. Therefore, by adjusting the speed of the refrigerated fan to decrease, the temperature-reaching shutdown time of the refrigerated compartment is extended so that the temperature of the frozen compartment can reach the target cooling requirement when the refrigeration system shuts down; or, by adjusting the speed of the frozen fan to increase, the cold supply speed in the frozen compartment is increased, so that the temperature of the frozen compartment can reach the target cooling requirement when the refrigeration system shuts down; or, adjust the speed of the refrigerated fan to decrease and adjust the speed of the frozen fan to increase, so that the refrigeration time of the refrigerated compartment is extended and the refrigeration capacity of the frozen compartment is enhanced, and then the temperature of the frozen compartment can reach the target cooling requirement.

[0072] Adjusting the operating speeds of the refrigerated fan and the frozen fan according to the second real-time temperature and the preset temperature further includes: if the second real-time temperature is less than the second preset temperature, then adjust the speed of the refrigerated fan to increase and / or adjust the speed of the frozen fan to decrease.

[0073] In this embodiment, the second real-time temperature is lower than the second preset temperature, and the temperature in the freezing compartment is lower. Therefore, by increasing the rotation speed of the refrigerating fan, the temperature reaching and shutdown time of the refrigerating compartment is shortened so that the refrigeration system can stop when the temperature in the freezing compartment reaches the target cooling requirement; or, by decreasing the rotation speed of the freezing fan, the cold supply speed in the freezing compartment is reduced so that the refrigeration system can stop when the temperature in the freezing compartment reaches the target cooling requirement; or, increasing the rotation speed of the refrigerating fan and decreasing the rotation speed of the freezing fan, so as to shorten the refrigeration time of the refrigeration and weaken the refrigeration capacity of the freezing, avoiding over-refrigeration in the freezing compartment and more energy consumption losses.

[0074] In the above embodiment, adjusting the operating speeds of the refrigerating fan and the freezing fan according to the second real-time temperature and the preset temperature further includes:

[0075] When the second real-time temperature is between the first preset temperature and the second preset temperature, the rotation speed of the refrigerating fan is controlled at the first basic speed, and the rotation speed of the freezing fan is the second basic speed. The configuration of the first basic speed and the second basic speed enables the refrigerating compartment and the freezing compartment to basically reach their respective refrigeration required temperatures simultaneously.

[0076] In the above embodiment, whether the rotation speed of the refrigerating fan is increased or decreased, it is increased or decreased based on the first basic speed; whether the rotation speed of the freezing fan is increased or decreased, it is increased or decreased based on the second basic speed.

[0077] As an alternative implementation of the above embodiment, before adjusting the operating speeds of the refrigerating fan and the freezing fan according to the second real-time temperature and the preset temperature, the control method further includes:

[0078] Obtain the ambient temperature and / or the refrigeration gear;

[0079] Determine the first preset temperature and the second preset temperature according to the ambient temperature and / or the refrigeration gear.

[0080] In the embodiment, the first preset temperature and the second preset temperature are correlated with the refrigeration gear and / or the ambient temperature, which can ensure different gear adjustment effects in the freezing compartment and the adaptability to environmental changes. 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 exemplifies a mapping relationship:

[0081] 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 >

[0082] In the above mapping table, T 11represents 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 different requirements of the refrigerator for temperature control accuracy and reliability, the refrigeration gear 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.

[0083] 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.

[0084] As an alternative implementation of the above embodiment, the preset temperature further includes a third preset temperature; the third preset temperature is greater than the first preset temperature.

[0085] The adjustment of reducing the rotation speed of the refrigerating air blower and / or increasing the rotation speed of the freezing air blower when the second real-time temperature is greater than the first preset temperature includes:

[0086] If the second real-time temperature is greater than the first preset temperature and less than the third preset temperature, reduce the rotation speed of the refrigerating air blower by a first rotation speed and / or increase the rotation speed of the freezing air blower by a second rotation speed;

[0087] If the second real-time temperature is greater than the third preset temperature, reduce the rotation speed of the refrigerating air blower by a third rotation speed and / or increase the rotation speed of the freezing air blower by a fourth rotation speed and / or increase the compressor to run at a higher speed; the first rotation speed is less than the third rotation speed, and the second rotation speed is less than the fourth rotation speed.

[0088] In this embodiment, when the second real-time temperature is higher and exceeds the third preset temperature, the freezer compartment requires more cooling capacity, and thus the cooling duration is longer. Further, the reduction amplitude of the rotation speed of the refrigerating air blower is greater and / or the increase amplitude of the rotation speed of the freezing air blower is greater, so as to extend the temperature-reaching shutdown time of the refrigerating compartment to a greater extent so that the temperature of the freezer compartment can meet the target cooling requirement when the refrigeration system shuts down; further, in some embodiments, the refrigeration efficiency can also be improved by increasing the rotation speed of the compressor so that the temperature in the freezer compartment drops rapidly.

[0089] In some embodiments, when the second real-time temperature decreases from being greater than the third preset temperature to below the third preset temperature and greater than the first preset temperature, the rotation speed of the refrigeration fan can be increased to a certain extent and / or the rotation speed of the freezing fan can be decreased to a certain extent. For example, when the second real-time temperature is between the first preset temperature and the second preset temperature, the rotation speed of the refrigeration fan is controlled at a first basic rotation speed, and the rotation speed of the freezing fan is a second basic rotation speed. The configuration of the first basic rotation speed and the second basic rotation speed enables the refrigerated compartment and the frozen compartment to basically reach their respective refrigeration demand temperatures simultaneously. If the second real-time temperature is greater than the third preset temperature, the rotation speed of the refrigeration fan is the first basic rotation speed minus a third rotation speed and / or the rotation speed of the freezing fan is the second basic rotation speed minus a fourth rotation speed; when the second real-time temperature decreases from being greater than the third preset temperature to below the third preset temperature and greater than the first preset temperature, the rotation speed of the refrigeration fan is increased to a certain extent and / or the rotation speed of the freezing fan is decreased to a certain extent. At this time, the rotation speed of the refrigeration fan is the first basic rotation speed minus a first rotation speed and / or the rotation speed of the freezing fan is the second basic rotation speed minus a second rotation speed. In this way, the rotation speed of the fan is gradually adjusted to gradually adjust the temperatures of the refrigerated compartment and the frozen compartment to synchronously reach the refrigeration demand.

[0090] In the above embodiments, if the second real-time temperature is equal to the third preset temperature, adjust the rotation speed of the refrigeration fan to decrease by a first rotation speed and / or adjust the rotation speed of the freezing fan to increase by a second rotation speed. It is also possible to adjust the rotation speed of the refrigeration fan to decrease by a third rotation speed and / or adjust the rotation speed of the freezing fan to increase by a fourth rotation speed and / or the compressor to run at an increased speed.

[0091] In the above embodiments, the setting of the third preset temperature is determined according to the gear of the refrigeration system and the ambient temperature, or can also be a parameter index set after testing the performance of the refrigeration system.

[0092] As an alternative implementation of the above embodiments, the preset temperature further includes a fourth preset temperature; the fourth preset temperature is less than the second preset temperature

[0093] If the second real-time temperature is less than the second preset temperature, then adjusting the rotation speed of the refrigeration fan to increase and / or adjusting the rotation speed of the freezing fan to decrease includes:

[0094] If the second real-time temperature is less than the second preset temperature and greater than the fourth preset temperature, then adjust the rotation speed of the refrigeration fan to increase by a fifth rotation speed and / or adjust the rotation speed of the freezing fan to decrease by a sixth rotation speed;

[0095] If the second real-time temperature is less than the fourth preset temperature, adjust the rotation speed of the refrigerating fan to increase by a seventh rotation speed and / or adjust the rotation speed of the freezing fan to decrease by an eighth rotation speed; the fifth rotation speed is less than the seventh rotation speed, and the sixth rotation speed is less than the eighth rotation speed.

[0096] In this embodiment, when the second real-time temperature is lower and below the fourth preset temperature, the amount of cold required in the freezing compartment is smaller, and thus the cooling duration is shorter. Furthermore, the increase in the rotation speed of the refrigerating fan is greater and / or the decrease in the rotation speed of the freezing fan is greater, so as to more greatly improve the refrigerating capacity of the refrigerator to enable the refrigeration system to stop when the temperature in the freezing compartment can reach the target cooling requirement.

[0097] In the above embodiments, if the second real-time temperature is equal to the fourth preset temperature, adjust the rotation speed of the refrigerating fan to increase by a fifth rotation speed and / or adjust the rotation speed of the freezing fan to decrease by a sixth rotation speed, or adjust the rotation speed of the refrigerating fan to increase by a seventh rotation speed and / or adjust the rotation speed of the freezing fan to decrease by an eighth rotation speed.

[0098] In the above embodiments, the setting of the fourth preset temperature is determined according to the gear of the refrigeration system and the ambient temperature, or can also be a parameter index set after testing the performance of the refrigeration system.

[0099] As an alternative implementation of the above embodiments, as Figure 1 shown, the outlet of the refrigerating evaporator is connected to the inlet of the freezing evaporator; the outlet of the freezing evaporator is connected to the inlet of the compressor. In the embodiment, the refrigerant flowing out of the refrigerating evaporator can flow into the freezing evaporator to supplement the amount of refrigerant in the freezing evaporator and reduce energy consumption.

[0100] To better implement the control method of the refrigeration system in the embodiments of the present application, based on the control method of the refrigeration system, the embodiments of the present application also provide a control device for the refrigeration system, as Figure 5 shown, the control device for the refrigeration system includes:

[0101] An acquisition module 01, configured to acquire the first real-time temperature of the refrigerating compartment when the compressor stops; wherein, the refrigerating fan is configured to provide the cold quantity of the refrigerating evaporator to the refrigerating compartment;

[0102] A control module 02, configured to control the compressor to start running, control the refrigerating fan to start running, and control the freezing fan to start running when the first real-time temperature reaches the refrigerating start point temperature; wherein, the freezing fan is configured to provide the cold quantity of the freezing supply evaporator to the freezing compartment;

[0103] The obtaining module 01 is configured to obtain the second real-time temperature of the freezing compartment;

[0104] The adjustment module 03 is configured to adjust the operating speeds of the refrigerating fan and the freezing fan according to the second real-time temperature and the preset temperature;

[0105] The obtaining module 01 is configured to obtain the third real-time temperature of the refrigerating compartment;

[0106] The control module 02 is configured to control the compressor to stop, control the refrigerating fan to stop, and control the freezing fan to stop when the third real-time temperature reaches the refrigerating shutdown point temperature.

[0107] 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.

[0108] 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. The control program of the control system of the refrigeration system is configured to implement the steps of the control method as described above.

[0109] 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), and PLA (Programmable Logic Array). The processor may also include a main processor and a coprocessor. The main processor is a processor used to process data in the wake state, also known as the CPU (Central Processing Unit); the coprocessor is a low-power processor used to process 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 operations of the control method 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.

[0110] The memory may include one or more computer-readable storage media, which 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 for being executed by a processor to implement the control method of the refrigeration system of the control system of the refrigeration system provided in the method embodiments of the present application.

[0111] When the compressor stops operating, obtain the first real-time temperature of the refrigerated compartment; wherein, the refrigerated air blower is configured to provide the cold quantity of the refrigerated evaporator to the refrigerated compartment;

[0112] When the first real-time temperature reaches the refrigerated startup point temperature, control the compressor to start operating, control the refrigerated air blower to start operating, and control the frozen air blower to start operating;

[0113] Obtain the second real-time temperature of the frozen compartment; wherein, the frozen air blower is configured to provide the cold quantity of the frozen supply evaporator to the frozen compartment;

[0114] Adjust the operating speeds of the refrigerated air blower and the frozen air blower according to the second real-time temperature and the preset temperature;

[0115] Obtain the third real-time temperature of the refrigerated compartment;

[0116] When the third real-time temperature reaches the refrigerated shutdown point temperature, control the compressor to stop, control the refrigerated air blower to stop, and control the frozen air blower to stop.

[0117] As an alternative implementation of the above embodiment, the preset temperature includes a first preset temperature and a second preset temperature; the first preset temperature is greater than the second preset temperature;

[0118] The adjusting the operating speeds of the refrigerated air blower and the frozen air blower according to the second real-time temperature and the preset temperature includes:

[0119] If the second real-time temperature is greater than the first preset temperature, then adjust the speed of the refrigerated air blower to decrease and / or adjust the speed of the frozen air blower to increase;

[0120] If the second real-time temperature is less than the second preset temperature, then adjust the speed of the refrigerated air blower to increase and / or adjust the speed of the frozen air blower to decrease.

[0121] As an alternative implementation of the above embodiment, before adjusting the operating speeds of the refrigeration fan and the freezing fan according to the second real-time temperature and the preset temperature, the control method further includes:

[0122] Obtain the ambient temperature and / or the refrigeration gear;

[0123] Determine the first preset temperature and the second preset temperature according to the ambient temperature and / or the refrigeration gear.

[0124] As an alternative implementation of the above embodiment, the difference between the first preset temperature and the second preset temperature is 2°C.

[0125] As an alternative implementation of the above embodiment, the preset temperature further includes a third preset temperature; the third preset temperature is greater than the first preset temperature;

[0126] The step of, if the second real-time temperature is greater than the first preset temperature, then adjusting the speed of the refrigeration fan to decrease and / or adjusting the speed of the freezing fan to increase includes:

[0127] If the second real-time temperature is greater than the first preset temperature and less than the third preset temperature, then adjust the speed of the refrigeration fan to decrease by a first speed and / or adjust the speed of the freezing fan to increase by a second speed;

[0128] If the second real-time temperature is greater than the third preset temperature, then adjust the speed of the refrigeration fan to decrease by a third speed and / or adjust the speed of the freezing fan to increase by a fourth speed and / or the compressor runs at an increased speed; the first speed is less than the third speed, and the second speed is less than the fourth speed.

[0129] As an alternative implementation of the above embodiment, the preset temperature further includes a fourth preset temperature; the fourth preset temperature is less than the second preset temperature

[0130] The step of, if the second real-time temperature is less than the second preset temperature, then adjusting the speed of the refrigeration fan to increase and / or adjusting the speed of the freezing fan to decrease includes:

[0131] If the second real-time temperature is less than the second preset temperature and greater than the fourth preset temperature, then adjust the speed of the refrigeration fan to increase by a fifth speed and / or adjust the speed of the freezing fan to decrease by a sixth speed;

[0132] If the second real-time temperature is less than the fourth preset temperature, then adjust the speed of the refrigeration fan to increase by a seventh speed and / or adjust the speed of the freezing fan to decrease by an eighth speed; the fifth speed is less than the seventh speed, and the sixth speed is less than the eighth speed.

[0133] As an alternative implementation of the above embodiment, the outlet of the refrigerating evaporator is communicated with the inlet of the freezing evaporator; the outlet of the freezing evaporator is communicated with the inlet of the compressor.

[0134] The control method, device, refrigerator and computer-readable storage medium of the refrigeration system provided by the embodiments of the present application have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner 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 manner and application scope. 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 separator, a refrigeration evaporator, a freezing evaporator, a refrigeration fan and a freezing fan; the compressor, the condenser and the liquid separator are connected in sequence, the liquid separator is connected to the refrigeration evaporator and the freezing evaporator, and the amount of refrigerant distributed by the refrigeration evaporator is greater than the amount of refrigerant distributed by the freezing evaporator, and the refrigeration evaporator and the freezing evaporator are connected to the compressor; the control method includes: When the compressor is stopped, a first real-time temperature of the refrigerated compartment is obtained; wherein the refrigerated fan is configured to provide the refrigeration of the refrigerated evaporator to the refrigerated compartment; When the first real-time temperature reaches the refrigeration start-up point temperature, the compressor is controlled to start up, the refrigeration fan is controlled to start up, and the freezing fan is controlled to start up; Acquiring a second real-time temperature of the freezing compartment; wherein the freezing fan is configured to provide the cooling capacity of the freezing supply evaporator to the freezing compartment; According to the second real-time temperature and the preset temperature, adjusting the operating speeds of the refrigerating fan and the freezing fan; Acquiring a third real-time temperature of the refrigerated compartment; When the third real-time temperature reaches the refrigeration shutdown point temperature, the compressor is controlled to shut down, the refrigeration fan is controlled to shut down, and the freezing fan is controlled to shut down.

2. The control method according to claim 1, characterized in that: The preset temperature includes a first preset temperature and a second preset temperature; the first preset temperature is greater than the second preset temperature; The adjusting the operating speeds of the refrigerating fan and the freezing fan according to the second real-time temperature and the preset temperature includes: If the second real-time temperature is greater than the first preset temperature, adjusting the speed of the refrigerating fan to decrease and / or adjusting the speed of the freezing fan to increase; If the second real-time temperature is lower than the second preset temperature, the rotation speed of the refrigerating fan is adjusted to increase and / or the rotation speed of the freezing fan is adjusted to decrease.

3. The control method according to claim 2, characterized in that: Before adjusting the operating speeds of the refrigerating fan and the freezing fan according to the second real-time temperature and the preset temperature, the control method further includes: Get the ambient temperature and / or cooling gear; The first preset temperature and the second preset temperature are determined according to the ambient temperature and / or the cooling gear.

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

5. The control method according to claim 2, characterized in that: The preset temperature further includes a third preset temperature; the third preset temperature is greater than the first preset temperature; If the second real-time temperature is greater than the first preset temperature, adjusting the speed of the refrigerating fan to decrease and / or adjusting the speed of the freezing fan to increase includes: If the second real-time temperature is greater than the first preset temperature and less than the third preset temperature, adjusting the rotation speed of the refrigerating fan to decrease by a first rotation speed and / or adjusting the rotation speed of the freezing fan to increase by a second rotation speed; If the second real-time temperature is greater than the third preset temperature, the speed of the refrigeration fan is adjusted to be reduced to the third speed and / or the speed of the freezing fan is adjusted to be increased to the fourth speed and / or the compressor is accelerated; the first speed is lower than the third speed, and the second speed is lower than the fourth speed.

6. The control method according to claim 2, characterized in that: The preset temperature further includes a fourth preset temperature; the fourth preset temperature is lower than the second preset temperature; If the second real-time temperature is less than the second preset temperature, adjusting the speed of the refrigerating fan to increase and / or adjusting the speed of the freezing fan to decrease includes: If the second real-time temperature is less than the second preset temperature and greater than the fourth preset temperature, adjusting the speed of the refrigerating fan to increase by a fifth speed and / or adjusting the speed of the freezing fan to decrease by a sixth speed; If the second real-time temperature is lower than the fourth preset temperature, the speed of the refrigeration fan is adjusted to increase the seventh speed and / or the speed of the freezing fan is adjusted to decrease the eighth speed; the fifth speed is lower than the seventh speed, and the sixth speed is lower than the eighth speed.

7. The control method according to any one of claims 1 to 6, characterized in that: The outlet of the refrigerating evaporator is connected to the inlet of the freezing evaporator; and the outlet of the freezing evaporator is connected to the inlet of the compressor.

8. A control device for a refrigeration system, characterized in that: The refrigeration system comprises a compressor, a condenser, a liquid separator, a refrigeration evaporator, a freezing evaporator, a refrigeration fan and a freezing fan; the compressor, the condenser and the liquid separator are connected in sequence, the liquid separator is connected to the refrigeration evaporator and the freezing evaporator, and the amount of refrigerant distributed by the refrigeration evaporator can be greater than the amount of refrigerant distributed by the freezing evaporator, and the refrigeration evaporator and the freezing evaporator are connected to the compressor; The control device comprises: an acquisition module, configured to acquire a first real-time temperature of the refrigerated compartment when the compressor is stopped; wherein the refrigerated fan is configured to provide the coldness of the refrigerated evaporator to the refrigerated compartment; a control module, configured to control the compressor to start up, the refrigeration fan to start up, and the freezing fan to start up when the first real-time temperature reaches the refrigeration start-up point temperature; wherein the freezing fan is configured to provide the coldness of the freezing evaporator to the freezing compartment; The acquisition module is configured to acquire a second real-time temperature of the freezing compartment; an adjustment module, configured to adjust the operating speeds of the refrigeration fan and the freezing fan according to the second real-time temperature and a preset temperature; The acquisition module is configured to acquire a third real-time temperature of the refrigerated compartment; The control module is configured to control the compressor to stop, control the refrigeration fan to stop, and control the freezing fan to stop when the third real-time temperature reaches the refrigeration shutdown point temperature.

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

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