Refrigerator and control method of refrigerator

Abstract

The embodiment of the invention belongs to the technical field of refrigerators, and provides a refrigerator and a control method of the refrigerator. The first evaporator and the second evaporator are filled with different refrigerant filling amounts in the refrigerant filling process. When the first evaporator works, the second evaporator is isolated through the first control valve and the second control valve, or when the second evaporator works, the first evaporator is isolated through the first control valve and the second control valve. The pressure of the refrigerant can reach the evaporation pressure required by the first evaporator and the second evaporator through the refrigerant with the proper mass, namely, the corresponding evaporation temperature is reached, so that the refrigeration efficiency of the refrigerator is improved, and energy conservation is achieved.

Description

Technical Field

[0001] This application relates to the field of refrigerator technology. More specifically, it relates to a refrigerator and a refrigerator control method. Background Technology

[0002] Compared to traditional single-system refrigerators, multi-system refrigerators can better maintain the freshness of food. Multi-system refrigerators typically include dual-system and triple-system refrigerators. Taking a dual-system refrigerator as an example, this refrigerator has independent evaporators for different temperature zones. For example, a refrigerator evaporator is set up for the refrigerator compartment to cool the refrigerator compartment alone, and a freezer evaporator is set up for the freezer compartment to cool the freezer compartment alone.

[0003] The cooling effect of each temperature zone is related to the evaporation temperature of the evaporator. The evaporation temperature of the evaporator can be controlled according to the cooling needs of each zone to improve cooling efficiency. The evaporation temperature refers to the temperature of the refrigerant when the liquid refrigerant in the evaporator changes to the gaseous refrigerant.

[0004] Therefore, how to control the evaporation temperature of the evaporator to improve the refrigeration efficiency of the refrigerator and thus achieve energy saving is a problem that needs to be solved. Summary of the Invention

[0005] This application provides a refrigerator and a refrigerator control method, which can be used to control the evaporation temperature of the evaporator to improve the refrigeration efficiency of the refrigerator and thus achieve energy saving.

[0006] In a first aspect, embodiments of this application provide a refrigerator, comprising:

[0007] The cabinet is constructed with a refrigerator compartment and a freezer compartment;

[0008] The refrigeration system installed inside the enclosure includes:

[0009] compressor;

[0010] Condenser;

[0011] A first evaporator is configured to provide cooling to the refrigerator compartment;

[0012] A second evaporator is configured to provide cooling capacity to the freezer compartment;

[0013] First control valve;

[0014] Second control valve;

[0015] First throttling device; and

[0016] Second throttling device;

[0017] Wherein, the compressor's exhaust port is connected to the condenser's inlet; the condenser's outlet is connected to the first inlet of the first control valve; the first outlet of the first control valve is connected to the inlet of the first evaporator via the first throttling device; the second outlet of the first control valve is connected to the inlet of the second evaporator via the second throttling device; the second evaporator's outlet is connected to the fourth outlet of the second control valve; the first evaporator's outlet is connected to the third outlet of the second control valve; and the second inlet of the second control valve is connected to the compressor's air inlet.

[0018] When refrigerant is being charged into the first evaporator, the first outlet of the first control valve is open, the second outlet is closed, and the third and fourth outlets of the second control valve are closed.

[0019] When refrigerant is being charged into the second evaporator, the fourth outlet of the second control valve is opened, the third outlet is closed, and the first and second outlets of the first control valve are closed.

[0020] The amount of refrigerant charged in the first evaporator is different from the amount of refrigerant charged in the second evaporator.

[0021] In this embodiment, different amounts of refrigerant are injected into the first and second evaporators during the refrigerant charging process. This allows the second evaporator to be isolated via the first and second control valves when the first evaporator is operating, or vice versa. The appropriate quality of refrigerant ensures that the refrigerant pressure reaches the required evaporation pressure for both the first and second evaporators, i.e., the corresponding evaporation temperature, thereby improving the refrigerator's cooling efficiency and achieving energy savings.

[0022] In some embodiments of this application, the refrigerator further includes a controller, which is electrically connected to the compressor, the first control valve, and the second control valve, and is configured to:

[0023] Upon receiving the first charging command, the first control valve is controlled to open the first outlet and close the second outlet, and the second control valve is controlled to close the third outlet and the fourth outlet. The first charging command is used to indicate that a first mass of refrigerant has been charged into the compressor.

[0024] The compressor is controlled to start so that a first mass of refrigerant inside the compressor is discharged to the condenser and the first evaporator;

[0025] After the first evaporator is charged with refrigerant, upon receiving the second charging command, the second control valve is controlled to open the fourth outlet and close the third outlet, and the first control valve is controlled to close the first outlet and the second outlet, so that the second mass of refrigerant already charged in the compressor is discharged to the second evaporator. The second charging command is used to indicate that the second mass of refrigerant has been charged in the compressor.

[0026] In this embodiment, each time refrigerant is charged, refrigerant is first charged to the compressor, and then the first control valve and the second control valve are controlled to charge the first evaporator and the second evaporator respectively, so as to achieve accurate charging of the corresponding mass of refrigerant.

[0027] In some embodiments of this application, the controller is further configured to:

[0028] If the compressor runs for a first duration, a first completion command is output, which is used to instruct the first evaporator to complete the refrigerant charging.

[0029] When the duration for which the second control valve opens the fourth outlet, closes the third outlet, and controls the first control valve to close the first outlet and the second outlet reaches a second duration, a second completion command is output. The second completion command is used to instruct the second evaporator to complete the refrigerant charging.

[0030] In this embodiment, timing can be used to determine when the evaporator has completed refrigerant charging, so as to promptly notify the refrigerant charging personnel and improve the efficiency of the refrigerant charging process.

[0031] In some embodiments of this application, the refrigerator further includes a controller, which is electrically connected to the compressor, the first control valve, and the second control valve, and is configured to:

[0032] Upon receiving a first control command, the system controls the first control valve to open the first outlet and close the second outlet, and controls the second control valve to close the third outlet and the fourth outlet; the first control command is used to indicate that refrigerant is about to be injected into the compressor.

[0033] Upon receiving a third charging command, the compressor is controlled to start, so that the target mass of refrigerant charged in the compressor is discharged to the first evaporator. The third charging command is used to indicate that the target mass of refrigerant has been charged in the compressor.

[0034] When the mass of refrigerant charged into the first evaporator is determined to be a first mass, the compressor is shut down, and the second control valve is opened to open the fourth outlet and closed the third outlet. The first control valve is then closed to close the first outlet and the second outlet, so that the remaining refrigerant in the compressor is discharged to the second evaporator; wherein the first mass is less than the target mass.

[0035] In this embodiment, the first control valve and the second control valve can be controlled to open the charging passage of the first evaporator, and then the refrigerant of the target mass required by the refrigeration system can be charged into the compressor. After the charging of the first evaporator is completed, the charging passage of the second evaporator can be opened to continue charging the refrigerant into the second evaporator, so as to achieve accurate charging of the corresponding mass of refrigerant.

[0036] In some embodiments of this application, the controller is further configured to:

[0037] When the compressor is started, the first timer is activated to time the duration of refrigerant charging in the first evaporator;

[0038] When the first timer reaches the first duration, the refrigerant content charged into the first evaporator is determined to be the first mass.

[0039] In this embodiment, since the refrigeration system is under vacuum before refrigerant is charged, there will be no pressure difference between the components. The timing can be used to determine whether the first evaporator 33 has been charged, so that the second evaporator can be charged with refrigerant in a timely manner when the first evaporator has been charged.

[0040] In some embodiments of this application, the controller is further configured to:

[0041] When the first timer reaches the third duration, it is determined that the refrigerant charging of the second evaporator is complete.

[0042] In this embodiment, timing can be used to determine whether the second evaporator has completed refrigerant charging, so that the controller can perform further actions, such as refrigeration performance testing, when charging is complete.

[0043] In some embodiments of this application, the refrigeration system further includes a first pressure sensor disposed in the first evaporator for detecting the pressure of the refrigerant in the first evaporator;

[0044] The controller is also configured to:

[0045] After the compressor is started, the first pressure is obtained through the first pressure sensor;

[0046] If the first pressure reaches the first preset value, the refrigerant content charged into the first evaporator is determined to be the first mass.

[0047] In this embodiment, by detecting the refrigerant pressure, it can be determined whether the charge amount of the first evaporator has reached the required first mass, which facilitates the control of refrigerant charge to the second evaporator and can prevent excessive refrigerant from being discharged from the compressor to the first evaporator.

[0048] In some embodiments of this application, the refrigeration system further includes a second pressure sensor disposed in the second evaporator for detecting the pressure of the refrigerant in the second evaporator;

[0049] The controller is also configured to:

[0050] After controlling the compressor to shut down, controlling the second control valve to open the fourth outlet and close the third outlet, and controlling the first control valve to close the first outlet and the second outlet, the second pressure is obtained through the second pressure sensor;

[0051] When the second pressure reaches the second preset value, it is determined that the refrigerant filling of the second evaporator is complete.

[0052] In this embodiment, detecting the refrigerant pressure inside the second evaporator can determine whether the second evaporator has completed refrigerant charging, so that the controller can perform further actions, such as refrigeration performance testing, when charging is complete.

[0053] In some embodiments of this application, the controller is further configured to:

[0054] When it is determined that the second evaporator has completed refrigerant charging, the first control valve is controlled to close the first outlet, open the second outlet, and the compressor is started to cool the freezer compartment.

[0055] When the freezer compartment finishes cooling, the first control valve is controlled to open the first outlet and close the second outlet, and the second control valve is controlled to open the third outlet and close the fourth outlet, so as to achieve cooling of the refrigerator compartment.

[0056] When the refrigeration of the cold compartment is completed, the compressor is shut down.

[0057] In this embodiment, after the refrigerant is charged in the second evaporator, the freezer compartment can be cooled first, and then the refrigerator compartment can be cooled after the freezer compartment is cooled. This allows the refrigeration performance of the refrigeration system to be tested after the refrigerant is charged, thus improving reliability.

[0058] Secondly, this application provides a method for controlling a refrigerator, the refrigerator comprising:

[0059] The cabinet is constructed with a refrigerator compartment and a freezer compartment;

[0060] The refrigeration system installed inside the enclosure includes:

[0061] compressor;

[0062] Condenser;

[0063] A first evaporator is configured to provide cooling to the refrigerator compartment;

[0064] A second evaporator is configured to provide cooling capacity to the freezer compartment;

[0065] First control valve;

[0066] Second control valve;

[0067] First throttling device; and

[0068] Second throttling device;

[0069] Wherein, the compressor's exhaust port is connected to the condenser's inlet; the condenser's outlet is connected to the first inlet of the first control valve; the first outlet of the first control valve is connected to the inlet of the first evaporator via the first throttling device; the second outlet of the first control valve is connected to the inlet of the second evaporator via the second throttling device; the second evaporator's outlet is connected to the fourth outlet of the second control valve; the first evaporator's outlet is connected to the third outlet of the second control valve; and the second inlet of the second control valve is connected to the compressor's air inlet.

[0070] The method includes:

[0071] When it is determined that refrigerant is to be charged into the first evaporator, the first outlet of the first control valve is opened, the second outlet is closed, and the third and fourth outlets of the second control valve are closed.

[0072] When it is determined that refrigerant is to be charged into the second evaporator, the fourth outlet of the second control valve is opened, the third outlet is closed, and the first outlet and the second outlet of the first control valve are closed.

[0073] The amount of refrigerant charged in the first evaporator is different from the amount of refrigerant charged in the second evaporator.

[0074] In this embodiment, different amounts of refrigerant are injected into the first and second evaporators during the refrigerant charging process. This allows the second evaporator to be isolated via the first and second control valves when the first evaporator is operating, or vice versa. The appropriate quality of refrigerant ensures that the refrigerant pressure reaches the required evaporation pressure for both the first and second evaporators, i.e., the corresponding evaporation temperature, thereby improving the refrigerator's cooling efficiency and achieving energy savings.

[0075] Thirdly, this application provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a computer, are used to implement the method described in the second aspect.

[0076] The computer-readable storage medium provided in this application embodiment can execute the technical solutions in the above method embodiments, and its beneficial effects are similar, so they will not be described again here.

[0077] Fourthly, this application provides a computer program product, including a computer program that, when executed by a computer, is used to implement the method described in the second aspect.

[0078] The computer program product provided in this application embodiment can execute the technical solutions in the above method embodiments, and its beneficial effects are similar, so they will not be described again here. Attached Figure Description

[0079] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0080] Figure 1 This is a schematic diagram of a refrigerator according to some embodiments;

[0081] Figure 2 This is a schematic diagram of the structure of a refrigeration system according to some embodiments;

[0082] Figure 3 This is a schematic diagram of the refrigerant flow direction when the refrigeration system according to some embodiments is refrigerating the refrigerator compartment in refrigeration mode;

[0083] Figure 4 This is a schematic diagram of the refrigerant flow direction when the refrigeration system according to some embodiments is cooling the freezer compartment in refrigeration mode;

[0084] Figure 5This is a schematic diagram showing the flow direction of refrigerant when refrigerant is charged into the first evaporator according to some embodiments;

[0085] Figure 6 This is a schematic diagram showing the flow direction of refrigerant when refrigerant is charged into the second evaporator according to some embodiments;

[0086] Figure 7 This is a flowchart illustrating a refrigerator control method according to some embodiments;

[0087] Figure 8 This is a flowchart illustrating another method for controlling a refrigerator according to some embodiments;

[0088] Figure 9 This is a flowchart illustrating another method for controlling a refrigerator according to some embodiments;

[0089] Figure 10 This is a flowchart illustrating another method for controlling a refrigerator according to some embodiments;

[0090] Figure 11 This is a flowchart illustrating another method for controlling a refrigerator according to some embodiments;

[0091] Figure 12 This is a flowchart illustrating another method for controlling a refrigerator according to some embodiments;

[0092] Figure 13 This is a flowchart illustrating another method for controlling a refrigerator according to some embodiments.

[0093] Explanation of reference numerals in the attached figures:

[0094] 10 - Refrigerator; 101 - Cabinet;

[0095] 102 - Door body; 103 - Refrigeration system;

[0096] 31-Compressor; 32-Condenser;

[0097] 33-First evaporator; 34-Second evaporator;

[0098] 35 - First control valve; 36 - Second control valve;

[0099] 37-First throttling device; 38-Second throttling device;

[0100] a1 - First entrance; a2 - First exit;

[0101] a3 - Second Exit; b1 - Second Entrance;

[0102] b2 - Third exit; b3 - Fourth exit. Detailed Implementation

[0103] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0104] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0105] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0106] In a refrigeration system, the evaporation temperature of the evaporator determines the amount of heat that the refrigerant can absorb, thus affecting the refrigeration effect.

[0107] For refrigerated evaporators, since they are used to maintain the temperature of the refrigerator compartment between, for example, 2°C and 8°C to keep food fresh, the evaporation temperature of the refrigerated evaporator can be between, for example, 0°C and 5°C, to ensure the cooling effect of the refrigerator compartment.

[0108] For freeze evaporators, since they are used to maintain the temperature of the freezer compartment at, for example, -18°C or lower, to ensure that food is preserved for a long time without spoiling, the evaporation temperature of the freeze evaporator can be, for example, between -20°C and -30°C, to ensure the cooling effect of the freezer compartment.

[0109] However, the evaporation temperature is related to the amount of refrigerant involved in the cycle; that is, the amount of refrigerant involved in the cycle will affect the evaporation temperature.

[0110] In some embodiments, when refrigerant is insufficient, the refrigerant flow rate into the evaporator decreases. Insufficient refrigerant leads to increased pressure within the evaporator, and since the evaporation temperature is directly related to this pressure, increased pressure results in an increased evaporation temperature. Specifically, increased pressure means the refrigerant needs to evaporate at a higher temperature, preventing it from effectively absorbing heat in the evaporator.

[0111] In some embodiments, when there is excess refrigerant, the refrigerant flow rate into the evaporator increases. Excess refrigerant leads to a decrease in pressure within the evaporator, which in turn causes a drop in evaporation temperature. Specifically, lower pressure means the refrigerant can evaporate at a lower temperature; however, excess refrigerant can result in incomplete evaporation within the evaporator, with some liquid refrigerant potentially entering the compressor, increasing the compressor's load and energy consumption. Furthermore, it reduces the evaporator's heat exchange efficiency, leading to unstable cooling performance.

[0112] Therefore, how to control the refrigerant content involved in the refrigeration cycle so that the evaporation temperature of the refrigerator evaporator and the freezer evaporator reaches the required evaporation temperature, thereby improving the refrigeration efficiency of the refrigerator and achieving energy saving, is a problem that needs to be solved.

[0113] Therefore, this application provides a refrigerator in which different amounts of refrigerant are injected into the freezing evaporator and the refrigeration evaporator during the refrigerant charging process. This ensures that, when the refrigeration evaporator is operating, the freezing evaporator is isolated by two control valves, and vice versa. The appropriate quality of refrigerant allows the refrigerant pressure to reach the required evaporation pressure for both the freezing and refrigeration evaporators, i.e., to reach the corresponding evaporation temperature, thereby improving the refrigerator's cooling efficiency and achieving energy savings.

[0114] Below, the refrigerated evaporator can be referred to as the first evaporator, and the frozen evaporator as the second evaporator.

[0115] The technical solutions of this application will be described in detail below with reference to specific embodiments. The following specific embodiments can be combined with each other or exist independently. The same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0116] First, the structure of a refrigerator provided in some embodiments of this application will be described.

[0117] In some embodiments, Figure 1 This is a schematic diagram of a refrigerator according to some embodiments, such as Figure 1 As shown, the refrigerator 10 includes a cabinet 101.

[0118] The refrigerator 10 also includes a door 102, which is connected to the cabinet 101.

[0119] The refrigerator 10 also includes a storage compartment, which is located inside the cabinet 101.

[0120] In some embodiments, the storage room includes a refrigerator compartment and a freezer compartment, etc.

[0121] In some embodiments, the refrigerator 10 further includes a refrigeration system 103 disposed within the cabinet 101. For example, Figure 2 This is a schematic diagram of the structure of a refrigeration system according to some embodiments, such as Figure 2 As shown, the refrigeration system 103 includes a compressor 31 configured to provide power for the refrigeration of the refrigerator 10. The compressor 31 has an exhaust port y1 and an intake port y2.

[0122] The refrigeration system 103 also includes a condenser 32, which is configured to dissipate heat from the refrigerant from the compressor 31.

[0123] The refrigeration system 103 also includes a first evaporator 33, which is configured to provide cooling capacity to the refrigerator compartment.

[0124] The refrigeration system 103 also includes a second evaporator 34, which is configured to provide cooling capacity to the freezer compartment.

[0125] The refrigeration system 103 also includes a first control valve 35, which has one inlet and two outlets, namely a first inlet a1, a first outlet a2, and a second outlet a3.

[0126] The refrigeration system 103 also includes a second control valve 36, which has one inlet and two outlets, namely a second inlet b1, a third outlet b2, and a fourth outlet b3.

[0127] In some embodiments, the refrigeration system 103 further includes a first throttling device 37, which is disposed between the first outlet a2 of the first control valve 35 and the first evaporator 33.

[0128] The refrigeration system 103 also includes a second throttling device 38, which is disposed between the second outlet a3 of the second control valve 36 and the second evaporator 34. In this way, throttling and pressure reduction can be achieved through the first throttling device 37 and the second throttling device 38.

[0129] The compressor 31's exhaust port y1 is connected to the condenser 32's inlet. The condenser 32's outlet is connected to the first inlet a1 of the first control valve 35. The first outlet a2 of the first control valve 35 is connected to the inlet of the first evaporator 33 via the first throttling device 37. The first control valve 35's second outlet a3 is connected to the inlet of the second evaporator 34 via the second throttling device 38. The second evaporator 34's outlet is connected to the fourth outlet b3 of the second control valve 36. The first evaporator 33's outlet is connected to the second control valve 36's third outlet b2. The second inlet b1 of the second control valve 36 is connected to the compressor's inlet y2.

[0130] In some embodiments, when the refrigeration system 103 is refrigerating the refrigerator compartment, the first outlet a2 of the first control valve 35 is open, and the third outlet b2 of the second control valve 36 is open. It can be understood that at this time, the first inlet a1 of the first control valve 35 is open, and the second outlet a3 of the first control valve 35 is closed. The second inlet b1 of the second control valve 36 is open, and the fourth outlet b3 of the second control valve 36 is closed.

[0131] Figure 3 This is a schematic diagram illustrating the refrigerant flow direction when a refrigeration system according to some embodiments is cooling the refrigerator compartment in refrigeration mode, such as... Figure 3 As shown, low-temperature, low-pressure refrigerant is drawn into the compressor 31 through the inlet y2 and compressed into a high-temperature, high-pressure gaseous refrigerant within the compressor 31 cylinder. It then enters the condenser 32 through the outlet y1. The high-temperature, high-pressure gaseous refrigerant dissipates heat through the condenser 32, causing its temperature to drop continuously. It is cooled to a normal-temperature, high-pressure saturated gaseous refrigerant and further cooled to a saturated liquid refrigerant. The liquid refrigerant flowing out of the condenser 32 enters the first throttling device 37 through the first control valve 35 for throttling and pressure reduction, becoming a normal-temperature, low-pressure two-phase refrigerant (i.e., a two-phase mixture composed of gaseous and liquid refrigerants). It then enters the first evaporator 33 to absorb heat and vaporize, not only lowering the temperature of the first evaporator 33 and its surroundings but also turning the refrigerant into a low-temperature, low-pressure gas. The refrigerant flowing out of the first evaporator 33 then enters the compressor 31 through the second control valve 36, completing the refrigeration cycle.

[0132] In some embodiments, when the refrigeration system 103 is cooling the freezer compartment, the second outlet a3 of the first control valve 35 opens, and the fourth outlet b3 of the second control valve 36 opens. It can be understood that at this time, one inlet a1 of the first control valve 35 opens, and the first outlet a2 of the first control valve 35 closes. The second inlet b1 of the second control valve 36 opens, and the third outlet b2 of the second control valve 36 closes.

[0133] Figure 4 This is a schematic diagram illustrating the refrigerant flow direction when a refrigeration system according to some embodiments is cooling the freezer compartment in refrigeration mode, such as... Figure 4As shown, low-temperature, low-pressure gaseous refrigerant is drawn into the compressor 31 through the inlet y2 and compressed into high-temperature, high-pressure gaseous refrigerant within the compressor 31 cylinder. It then enters the condenser 32 through the outlet y1. The high-temperature, high-pressure gaseous refrigerant dissipates heat through the condenser 32, causing its temperature to drop continuously. It is cooled to room-temperature, high-pressure saturated gaseous refrigerant and further cooled to saturated liquid refrigerant. The refrigerant flowing out of the condenser 32 passes through the first electric valve 35 and enters the second throttling device 38 for throttling and pressure reduction, becoming a room-temperature, low-pressure gas-liquid two-phase refrigerant. It then enters the second evaporator 34 to absorb heat and vaporize, not only lowering the temperature of the second evaporator 34 and its surroundings but also turning the refrigerant into a low-temperature, low-pressure gas. The refrigerant then flows out of the first evaporator 33 and re-enters the compressor 31 through the second control valve 36, completing the refrigeration cycle.

[0134] In some embodiments, after the refrigerator 10 is manufactured, the refrigeration system 103 of the refrigerator 10 needs to be evacuated, that is, the moisture and air impurities inside the pipes of the refrigeration system 103 of the refrigerator 10 are extracted to make the refrigeration system 103 a vacuum state, so as to prevent the moisture and air impurities from reacting with the refrigerant and the oil of the compressor 31 to cause oxidation reaction, which would affect the refrigeration efficiency of the refrigeration system 103 and damage the refrigeration system 103.

[0135] In some embodiments, when the air is extracted from the refrigeration system 103, the inlets and all outlets of the first control valve 35 and the second control valve 36 can be opened to ensure that all internal pipes of the refrigeration system 103 are connected, preventing the existence of closed spaces inside that would prevent air from being extracted.

[0136] In some embodiments, after the air is evacuated from the refrigeration system 103 of the refrigerator 10, refrigerant can be charged into the refrigeration system 103. Specifically, it can be detected whether the vacuum degree inside the refrigeration system 103 of the refrigerator 10 is less than or equal to 5 Pa. If so, refrigerant can be charged.

[0137] In some embodiments, since the compressor compartment where the compressor 31 is located is conveniently located, refrigerant can be injected into the compressor 31 via a refrigerant charging device. For example, the refrigerant charging device can charge refrigerant through the charging port of the compressor 31.

[0138] In some embodiments, when refrigerant is being charged into the first evaporator 33, the first outlet a2 of the first control valve 35 is opened, the second outlet a3 is closed, and the third outlet b2 and the fourth outlet b3 of the second control valve 36 are closed.

[0139] Figure 5 This is a schematic diagram illustrating the refrigerant flow direction when refrigerant is charged into the first evaporator according to some embodiments, such as... Figure 5 As shown, the refrigerant in the compressor 31 enters the condenser 32 and the first evaporator 33 through the exhaust port y1, thereby storing the refrigerant in the condenser 32 and the first evaporator 33.

[0140] In some embodiments, when refrigerant is being injected into the second evaporator 34, the fourth outlet b3 of the second control valve 36 is opened, the third outlet b2 is closed, and the first outlet a2 and the second outlet a3 of the first control valve 35 are closed.

[0141] Figure 6 This is a schematic diagram illustrating the refrigerant flow direction when refrigerant is charged into the second evaporator according to some embodiments, such as... Figure 6 As shown, the refrigerant in the compressor 31 enters the second evaporator 34 through the air inlet y2, thereby storing the refrigerant in the second evaporator 34.

[0142] In some embodiments, the amount of refrigerant charged in the first evaporator 33 is different from the amount of refrigerant charged in the second evaporator 34. That is, because the refrigeration requirements of the refrigerator compartment and the freezer compartment are different, the evaporation temperature required by the first evaporator 33 is different from that required by the second evaporator 34. Therefore, by charging different amounts of refrigerant in the first evaporator 33 and the second evaporator 34, the required evaporation temperatures of the first evaporator 33 and the second evaporator 34 can be met, thereby satisfying the different refrigeration requirements of the refrigerator compartment and the freezer compartment.

[0143] By injecting different amounts of refrigerant into the first evaporator 33 and the second evaporator 34 during the refrigerant charging process, the second evaporator 34 can be isolated via the first control valve 35 and the second control valve when the first evaporator 33 is operating, or the first evaporator 33 can be isolated via the first control valve 35 and the second control valve when the second evaporator 34 is operating. This ensures that the appropriate quality of refrigerant allows the refrigerant pressure to reach the required evaporation pressure for both the first and second evaporators 33, i.e., to reach the corresponding evaporation temperature. This improves the refrigerator's cooling efficiency and achieves energy savings.

[0144] Taking the first evaporator 33 as an example, the "suitable quality of refrigerant" refers to the quality of refrigerant that matches the required evaporation temperature of the first evaporator 33. This refrigerant participates in the refrigeration cycle when the refrigeration system 103 refrigerates the refrigerator compartment.

[0145] It is understandable that the unit of mass of refrigerant can be g (grams).

[0146] In some embodiments, the refrigerator 10 further includes a controller, which is electrically connected to the compressor 31, the first control valve 35 and the second control valve 36 respectively, and can be used to control the compressor 31 to turn on or off, and to control the inlet and outlet of the first control valve 35 and the second control valve 36 to turn on or off.

[0147] Below, based on the refrigerator 10 described above, we will explain how to inject refrigerant into the first evaporator 33 and the second evaporator 34.

[0148] Figure 7 This is a flowchart illustrating a refrigerator control method according to some embodiments, the method being applied to the controller of the refrigerator 10 described above, such as... Figure 7 As shown, the method includes steps S701 to S703.

[0149] S701. Upon receiving the first charging command, the first control valve 35 is controlled to open the first outlet a2 and close the second outlet a3, and the second control valve 36 is controlled to close the third outlet b2 and the fourth outlet b3. The first charging command is used to indicate that the compressor 31 has been charged with a first mass of refrigerant.

[0150] In some embodiments, the first charging instruction may be received by the controller after the developer charges the compressor 31 with a first mass of refrigerant via the refrigerant charging device.

[0151] For example, the first charging command can be sent from the refrigerator's display panel to the controller. In other words, after the refrigerant charging is completed, the developer can trigger the corresponding button on the refrigerator's display panel, so that the display panel can send the first charging command to the controller.

[0152] For example, the first charging command can be sent from a terminal device used to control the refrigerator 10 to the controller. In other words, the developer can send the first charging command to the controller through the terminal device after the refrigerant charging is completed.

[0153] Upon receiving the first filling command, the controller can control the first control valve 35 to open the first outlet a2 and close the second outlet a3, and control the second control valve 36 to close the third outlet b2 and the fourth outlet b3, so as to open the passage between the compressor 31, the condenser 32 and the first evaporator 33.

[0154] S702, Control the compressor 31 to start, so that the first mass of refrigerant in the compressor 31 is discharged to the first evaporator 33.

[0155] After the controller starts the compressor 31, the refrigerant flow direction can be referenced. Figure 5 .

[0156] It is understandable that after the compressor 31 is turned on, the refrigerant flows through the condenser 32, the first pipeline between the condenser 32 and the discharge port y1 of the compressor 31, the second pipeline between the condenser 32 and the first inlet a1 of the first control valve 35, and the third pipeline between the first outlet a2 of the first control valve and the first evaporator 33, and flows to the first evaporator 33. Therefore, when the first mass of refrigerant is charged, some refrigerant will be stored in the condenser 32 and these pipelines. That is, the first mass of refrigerant is distributed in the condenser 32, the first pipeline, the second pipeline, the third pipeline and the first evaporator 33.

[0157] In some embodiments, the first mass can be determined according to the following formula:

[0158] m1 = ρ1 × (V1 + V2 + V3)

[0159] Where m1 is the first mass, in grams. ρ1 can be the refrigerant density corresponding to the internal pressure of the first evaporator 33 at the first evaporation temperature. V1 is the volume of the first evaporator 33, V2 is the volume of the condenser 32, and V3 is the volume of the first pipe, the second pipe, and the third pipe.

[0160] For example, the first evaporation temperature can be 0°C. Then, ρ1 is the refrigerant density corresponding to the internal pressure of the first evaporator 33 when the evaporation temperature of the first evaporator 33 is 0°C. The first standard evaporation temperature can be determined based on one or more of the following factors: refrigerant type, heat load, environmental conditions, food preservation requirements, and refrigeration system control strategy. This application will not elaborate on these factors.

[0161] When the refrigeration system 103 refrigerates the refrigerator compartment, for example... Figure 3 The refrigeration cycle shown involves the refrigerant of the first mass plus the refrigerant in the fourth pipeline, which enables the evaporation temperature of the first evaporator 33 to reach the first evaporation temperature. The fourth pipeline is the pipeline between the air inlet y2 of the compressor 31 and the second inlet b1 of the second control valve. The refrigerant in the fourth pipeline is stored during the refrigerant charging of the second evaporator 34.

[0162] It is understandable that after the refrigerator compartment is cooled, the condenser 32, the first pipe and the second pipe contain refrigerant. This refrigerant participates in the refrigeration cycle when the refrigeration system 103 cools the freezer compartment, thus cooling the freezer compartment.

[0163] It should be noted that, in the embodiments of this application, the evaporation temperature of the first evaporator reaching the first evaporation temperature can mean that the evaporation temperature of the first evaporator 33 is equal to the first evaporation temperature. It can also mean that the absolute value of the difference between the evaporation temperature of the first evaporator and the first evaporation temperature is small, for example, the difference is less than a preset value.

[0164] S703 After the first evaporator 33 is charged with refrigerant, upon receiving the second charging command, the second control valve 36 is controlled to open the fourth outlet b3 and close the third outlet b2, and the first control valve 35 is controlled to close the first outlet a2 and the second outlet a3, so that the second mass of refrigerant already charged in the compressor 31 is discharged to the second evaporator 34. The second charging command is used to indicate that the second mass of refrigerant has been charged in the compressor 31.

[0165] After the first mass of refrigerant in the compressor 31 has been discharged, when the controller receives the second charging command, it controls the second control valve 36 to open the fourth outlet b3 and close the third outlet b2, and controls the first control valve 35 to close the first outlet a2 and the second outlet a3, so that the second mass of refrigerant already charged in the compressor 31 is discharged to the second evaporator 34.

[0166] After the controller controls the second control valve 36 to open the fourth outlet b3 and close the third outlet b2, and controls the first control valve 35 to close the first outlet a2 and the second outlet a3, the refrigerant flow direction can be referenced. Figure 6 .

[0167] It is understandable that when refrigerant is being charged into the second evaporator 34, the compressor 31 is in the off state, that is, the compressor 31 is not turned on. Since the compressor 31 is the high-pressure side and the second evaporator 34 is the low-pressure side, the refrigerant in the compressor 31 can flow to the second evaporator 34 through the air inlet y2.

[0168] In this embodiment, each time refrigerant is charged, refrigerant is first charged to the compressor 31, and then the first control valve 35 and the second control valve 36 are controlled to charge the first evaporator 33 and the second evaporator 34 respectively, so as to achieve accurate charging of the corresponding mass of refrigerant.

[0169] It is understandable that after the second control valve 36 opens the fourth outlet b3 and closes the third outlet b2, and the first control valve 35 closes the first outlet a2 and the second outlet a3, the refrigerant flows to the second evaporator 34 through the fourth pipeline between the compressor 31's inlet y2 and the second evaporator 34. Therefore, when the second mass of refrigerant is fully charged, some refrigerant will be stored in the fourth pipeline, that is, the second mass of refrigerant is distributed in the fourth pipeline and the second evaporator 34.

[0170] In some embodiments, the second mass can be determined based on the first mass and the target mass, for example, second mass = target mass - first mass. The target mass is the amount of refrigerant required by the refrigeration system 103, and can be determined based on one or more of the following factors: system design parameters (e.g., type of refrigeration system, type of refrigerant, first evaporation temperature of the first evaporator 33, second evaporation stabilization and condensation temperatures of the second evaporator 34, etc.), total volume, and refrigerant charge density. This application will not elaborate on these factors.

[0171] When the refrigeration system 103 refrigerates the freezer compartment, for example... Figure 4 The refrigeration cycle shown involves the second mass of refrigerant, the refrigerant stored in the condenser 32, the first pipeline, and the second pipeline, all participating in the refrigeration cycle, which allows the evaporation temperature of the second evaporator 34 to reach the second evaporation temperature.

[0172] It should be noted that when the refrigeration system 103 refrigerates the freezer compartment and the refrigerator compartment, the volume, refrigerant pressure, and refrigerant temperature in the first pipe, the second pipe, and the condenser 32 remain unchanged, so that when the refrigeration system 103 refrigerates the refrigerator compartment, the mass of the refrigerant in the condenser 32, the first pipe, and the second pipe remains unchanged.

[0173] Taking a first mass m1 of 100g and a target mass of 150g as an example, if the mass of refrigerant in condenser 32, the first pipe, and the second pipe is 60g, then the mass of refrigerant stored in the first evaporator 33 is 40g. The mass of refrigerant in the second evaporator 34 and the fourth pipe is 150g - 100g = 50g. For example, the mass of refrigerant in the second evaporator 34 is 45g, and the mass of refrigerant in the fourth pipe is 5g.

[0174] Depend on Figure 3 and Figure 4 It is known that when the refrigeration system 103 refrigerates the freezer or refrigerator compartment, the pipes and components that participate in the refrigeration cycle include: compressor 31, first pipe, condenser 32, second pipe and fourth pipe.

[0175] So, when the refrigeration system 103 is refrigerating the refrigerator compartment, the mass of the refrigerant participating in the refrigeration cycle is 100g + 5g of the refrigerant in the fourth pipeline, which is 105g. This mass of refrigerant can make the evaporation temperature of the first evaporator 33 reach the first evaporation temperature, thereby meeting the refrigeration requirements of the refrigerator compartment.

[0176] When the refrigeration system 103 is refrigerating the freezer compartment, the mass of the refrigerant participating in the refrigeration cycle is 45g + 5g + 60g, which is 100g. This mass of refrigerant can make the evaporation temperature of the second evaporator 34 reach the second evaporation temperature, thereby meeting the refrigeration requirements of the freezer compartment.

[0177] It should be noted that the above numerical examples are only used to illustrate the mass of refrigerant participating in the refrigeration cycle when the refrigeration system 103 is refrigerating the refrigerator compartment and the freezer compartment. They do not limit the relationship between the total mass of refrigerant actually participating in the refrigeration cycle and the mass of refrigerant in each component and pipeline.

[0178] In some embodiments, it can be determined by timing whether the first mass and the second mass of refrigerant in the compressor 31 have been fully charged.

[0179] Specifically, the controller can start timing when the compressor 31 is turned on. When the compressor 31 has been running for a first duration, it can output a first completion command. This first completion command is used to instruct the first evaporator 33 to complete the refrigerant charging, that is, the first mass of refrigerant in the compressor 31 is charged.

[0180] The controller can start timing when controlling the second control valve 36 to open the fourth outlet b3 and close the third outlet b2, and when controlling the first control valve 35 to close the first outlet a2 and the second outlet a3. When the duration of the second control valve 36 opening the fourth outlet b3 and closing the third outlet b2, and the first control valve 35 closing the first outlet a2 and the second outlet a3 reaches the second duration, the controller outputs a second completion command. The second completion command is used to instruct the second evaporator 34 to complete the refrigerant charging, that is, the second mass of refrigerant in the compressor 31 is charged.

[0181] During the refrigerant charging process, timing can be used to determine whether the first evaporator 33 and the second evaporator 34 have completed the refrigerant charging, which can promptly alert the developers and improve the efficiency of the refrigerant charging process.

[0182] Figure 8 This is a flowchart illustrating another refrigerator control method according to some embodiments, the method being applied to the controller of the refrigerator 10 described above, such as... Figure 8 As shown, the method includes steps S801 to S803.

[0183] S801. Upon receiving the first control command, the first control valve 35 is controlled to open the first outlet a2 and close the second outlet a3, and the second control valve 36 is controlled to close the third outlet b2 and the fourth outlet b3. The first control command is used to indicate that refrigerant is about to be charged into the compressor 31. In some embodiments, the first control command may be received by the controller before the developer charges the compressor 31 with the target mass of refrigerant through the refrigerant charging device.

[0184] For example, the first control command can be sent from the refrigerator's display panel to the controller. In other words, the developer can trigger the corresponding button on the refrigerator's display panel before the refrigerant of the target mass is injected into the compressor 31 through the refrigerant filling device, so that the display panel can send the first control command to the controller.

[0185] For example, the first control command can be sent from a terminal device for controlling the refrigerator 10 to the controller. In other words, the developer can send the first control command to the controller through the terminal device before the refrigerant is charged to the compressor 31 with the target mass of refrigerant through the refrigerant charging device.

[0186] Upon receiving the first control command, the controller can control the first control valve 35 to open the first outlet a2 and close the second outlet a3, and control the second control valve 36 to close the third outlet b2 and the fourth outlet b3. After the compressor 31 is started, the refrigerant charged in the compressor 31 flows through the first pipeline, condenser 32, second pipeline, and third pipeline to the first evaporator 33. The refrigerant flow direction can be referenced... Figure 5 .

[0187] S802. Upon receiving the third charging command, the compressor 31 is controlled to start so that the target mass of refrigerant charged in the compressor 31 is discharged to the first evaporator 33. The third charging command is used to indicate that the target mass of refrigerant has been charged in the compressor 31.

[0188] Upon receiving the third charging command, the controller can start the compressor 31 so that after charging the compressor 31 with the target mass of refrigerant, the refrigerant is discharged into the first evaporator 33.

[0189] In some embodiments, the third charging instruction may be received by the controller after the developer charges the compressor 31 with the target mass of refrigerant via the refrigerant charging device.

[0190] For example, the third charging command can be sent from the refrigerator's display panel to the controller. In other words, after the refrigerant charging is completed, the developer can trigger the corresponding button on the refrigerator's display panel, so that the display panel can send the third charging command to the controller.

[0191] For example, the third charging command can be sent from a terminal device used to control the refrigerator 10 to the controller. In other words, the developer can send the third charging command to the controller through the terminal device after the refrigerant charging is completed.

[0192] S803. When the mass of the refrigerant charged into the first evaporator 33 is determined to be the first mass, the compressor 31 is turned off, and the second control valve 36 is opened to open the fourth outlet b3 and closed the third outlet b2. The first control valve 35 is closed to close the first outlet a2 and the second outlet a3, so that the remaining refrigerant in the compressor 31 is discharged to the second evaporator 34, wherein the first mass is less than the target mass.

[0193] During the refrigerant flow from compressor 31 to the first evaporator 33, the controller can determine whether the mass of refrigerant charged into the first evaporator 33 is the first mass. When the mass of refrigerant charged into the first evaporator 33 is determined to be the first mass, the controller can shut down compressor 31, control the second control valve 36 to open the fourth outlet b3 and close the third outlet b2, and control the first control valve 35 to close the first outlet a2 and the second outlet a3. The remaining refrigerant in compressor 31 flows through the fourth pipeline to the second evaporator 34. The refrigerant flow direction can be referenced... Figure 6 .

[0194] The mass of the remaining refrigerant in compressor 31 can be a second mass, i.e., second mass = target mass - first mass. For an explanation of the mass of the refrigerant participating in the refrigeration cycle when the refrigeration system 103 refrigerates the refrigerator compartment and the freezer compartment, please refer to the above embodiments; further details will not be repeated here.

[0195] The first control valve 35 and the second control valve 36 can be controlled to open the charging passage of the first evaporator 33 (i.e., compressor 31-first pipeline-condenser 32-second pipeline-third pipeline-first evaporator 33), and then the compressor 31 can be charged with the target mass of refrigerant required by the refrigeration system 103. After the first evaporator 33 is charged, the charging passage of the second evaporator 34 can be opened (i.e., compressor 31-fourth pipeline-second evaporator 34) to continue charging the second evaporator 34 with refrigerant. This can achieve accurate charging of the corresponding mass of refrigerant.

[0196] The following explains how the controller determines whether the mass of the refrigerant charged into the first evaporator 33 is the first mass.

[0197] Figure 9 This is a flowchart illustrating another refrigerator control method according to some embodiments, the method being applied to the controller of the refrigerator 10 described above, such as... Figure 9 As shown, the method includes steps S901 to S902.

[0198] S901. When the compressor 31 is started, the first timer is activated to keep track of the time for charging refrigerant into the first evaporator 33.

[0199] After the controller controls the first control valve 35 to open the first outlet a2 and close the second outlet a3, and controls the second control valve 36 to close the third outlet b2 and the fourth outlet b3, when the compressor 31 is started, the controller can start the first timer to keep track of the time for charging refrigerant into the first evaporator 33.

[0200] S902. When the duration of the first timer reaches the first duration, the refrigerant content charged into the first evaporator 33 is determined to be the first mass.

[0201] When the duration of the first timer reaches the first duration, the refrigerant content charged into the first evaporator 33 can be determined to be the first mass.

[0202] Since the refrigeration system is under vacuum before refrigerant is charged, there will be no pressure differences between components. By timing, it can be determined whether the first evaporator 33 has been charged, so that the second evaporator 34 can be charged with refrigerant in a timely manner when the first evaporator 33 has been charged.

[0203] In some embodiments, after the refrigerant charging of the first evaporator 33 is completed, it is necessary to continue charging the second evaporator 34 with refrigerant. The controller can determine whether the charging of the second evaporator 34 is completed by timing.

[0204] Figure 10 This is a flowchart illustrating another refrigerator control method according to some embodiments, the method being applied to the controller of the refrigerator 10 described above, such as... Figure 10 As shown, the method includes steps S1001 to S1003.

[0205] S1001. When the compressor 31 is started, the first timer is activated to keep track of the time for charging refrigerant into the first evaporator 33.

[0206] S1002. When the duration of the first timer reaches the first duration, the refrigerant content charged into the first evaporator 33 is determined to be the first mass.

[0207] S1003. When the first timer reaches the third duration, determine that the refrigerant charging of the second evaporator 34 is complete.

[0208] After the refrigerant charging of the first evaporator 33 is completed, the controller can control the first timer to continue timing. When the timing duration of the first timer reaches the third duration, it is determined that the refrigerant charging of the second evaporator 34 is completed.

[0209] In some embodiments, the third duration can be equal to the second duration. After the refrigerant charging of the first evaporator 33 is completed, the controller can control the timing of the first timer to be reset to zero, and start the timing of the first timer when controlling the second control valve 36 to open the fourth outlet b3 and close the third outlet b2, and controlling the first control valve 35 to close the first outlet a2 and the second outlet a3. When the timing of the first timer reaches the third duration, it can be determined that the refrigerant charging of the second evaporator 34 is completed.

[0210] In some embodiments, the third duration may be equal to the sum of the first duration and the second duration. After the refrigerant charging of the first evaporator 33 is completed, the controller may not control the timing of the first timer to be reset to zero, and may continue timing when the refrigerant is charged to the second evaporator 34. When the timing of the first timer reaches the third duration, it can be determined that the refrigerant charging of the second evaporator 34 is complete.

[0211] The timing function can determine whether the second evaporator 34 has completed refrigerant charging, allowing the controller to perform further actions, such as refrigeration performance testing, once charging is complete.

[0212] In some embodiments, the refrigeration system 103 further includes a first pressure sensor disposed within the first evaporator 33 for detecting the pressure of the refrigerant within the first evaporator.

[0213] In some embodiments, the refrigeration system 103 further includes a second pressure sensor disposed within the second evaporator 34 for detecting the pressure of the refrigerant within the second evaporator.

[0214] Figure 11 This is a flowchart illustrating another refrigerator control method according to some embodiments, the method being applied to the controller of the refrigerator 10 described above, such as... Figure 11 As shown, the method includes steps S1101 to S1102.

[0215] S1101. After the compressor 31 is turned on, the first pressure is obtained through the first pressure sensor.

[0216] After compressor 31 is turned on, the controller can obtain the first pressure through the first pressure sensor.

[0217] In some embodiments, the controller may acquire a first pressure via a first pressure sensor at preset time intervals.

[0218] In some embodiments, when the first pressure sensor detects a change in the pressure of the refrigerant in the first evaporator 33, the controller may first send a first pressure.

[0219] S1102. When the first pressure reaches the first preset value, the refrigerant content charged into the first evaporator 33 is determined to be the first mass.

[0220] If the first pressure reaches the first preset value, the controller can determine that the refrigerant content charged in the first evaporator 33 is the first mass.

[0221] By detecting the pressure of the refrigerant in the first evaporator 33, it can be determined whether the amount of refrigerant charged in the first evaporator 33 has reached the required first mass, which facilitates the control of refrigerant charging to the second evaporator 34 and can prevent excessive refrigerant from being discharged from the compressor 31 to the first evaporator 33.

[0222] In some embodiments, after the refrigerant charging of the first evaporator 33 is completed, it is necessary to continue charging the second evaporator 34 with refrigerant. The controller can determine whether the second evaporator 34 has completed refrigerant charging by detecting the pressure of the refrigerant in the second evaporator 34.

[0223] Figure 12 This is a flowchart illustrating another refrigerator control method according to some embodiments, the method being applied to the controller of the refrigerator 10 described above, such as... Figure 12 As shown, the method includes steps S1201 to S1202.

[0224] S1201 After controlling the compressor 31 to shut down, controlling the second control valve 36 to open the fourth outlet b3 and close the third outlet b2, and controlling the first control valve 35 to close the first outlet a2 and the second outlet a3, the second pressure is obtained through the second pressure sensor.

[0225] After the refrigerant is charged into the first evaporator 33, the controller can obtain the second pressure through the second pressure sensor after controlling the compressor 31 to shut down, controlling the second control valve 36 to open the fourth outlet b3 and close the third outlet b2, and controlling the first control valve 35 to close the first outlet a2 and the second outlet a3.

[0226] S1202. When the second pressure reaches the second preset value, determine that the refrigerant charging of the second evaporator 34 is complete.

[0227] When the second pressure reaches the second preset value, the controller can determine that the refrigerant charging of the second evaporator 34 is complete.

[0228] In some embodiments, the controller may acquire a second pressure via a second pressure sensor at preset time intervals.

[0229] In some embodiments, when the second pressure sensor detects a change in the pressure of the refrigerant in the second evaporator 34, the controller may first send a second pressure.

[0230] By detecting the refrigerant pressure inside the second evaporator 34, it can be determined whether the second evaporator 34 has completed refrigerant charging, so that the controller can perform further actions, such as refrigeration performance testing, when charging is complete.

[0231] In some embodiments, after refrigerant is injected into the refrigeration system 103 of the refrigerator, the controller can control the operation of the refrigeration system 103 to perform refrigeration performance testing.

[0232] In some embodiments, control can be performed as follows:

[0233] Figure 13 This is a flowchart illustrating another refrigerator control method according to some embodiments, the method being applied to the controller of the refrigerator 10 described above, such as... Figure 13 As shown, the method includes steps S1311 to S1313.

[0234] S1301. When it is determined that the second evaporator 34 has completed the refrigerant charging, the first control valve 35 is controlled to close the first outlet a2, open the second outlet a3, and start the compressor 31 to cool the freezer compartment.

[0235] Understandably, when refrigerant is being charged into the second evaporator 34, the first inlet a1 and the fourth outlet b3 of the second control valve 36 are open, while the third outlet b2 is closed. Therefore, after confirming that the second evaporator 34 has completed refrigerant charging, the controller may not need to control the second control valve 36. For specific refrigerant flow directions, please refer to... Figure 4 .

[0236] S1302. When the freezer compartment is cooled, the controller can control the first control valve 35 to open the first outlet a2 and close the second outlet a3, and control the second control valve 36 to open the third outlet b2 and close the fourth outlet b3, so as to achieve cooling of the refrigerator compartment.

[0237] For specific refrigerant flow directions, please refer to Figure 3 .

[0238] In some embodiments, the freezing of the freezer compartment can be determined to be complete when the compartment temperature is less than or equal to the target freezing temperature. For example, the controller can obtain the compartment temperature through a temperature sensor located in the freezer compartment.

[0239] S1303. When the refrigeration of the refrigerator compartment is completed, the controller can control the compressor 31 to shut down.

[0240] In some embodiments, the refrigeration of the refrigerator compartment can be determined to be complete when the compartment temperature is less than or equal to the target refrigeration temperature. For example, the controller can obtain the compartment temperature through a temperature sensor located in the refrigerator compartment.

[0241] In some embodiments, since the refrigerator 10 is initially powered on and its internal temperature is high, the compressor 31 speed can be controlled to a target speed for rapid cooling in order to quickly reduce the internal temperature of the refrigerator 10 to the target freezing temperature. For example, the target speed is 3900 rpm / min.

[0242] After the refrigerant is charged in the second evaporator, the freezer compartment can be cooled first, and then the refrigerator compartment can be cooled after the freezer compartment is cooled. This allows for the initial cooling test of the refrigerator 10 after the refrigerant is charged, which can determine whether there is a fault, test the cooling performance of the refrigeration system, and improve reliability.

[0243] This application also provides a computer-readable storage medium, which may include various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. Specifically, the computer-readable storage medium stores computer-executable instructions, which are executed by a computer to implement the technical solutions shown in the above-described method embodiments.

[0244] This application also provides a program product, which includes executable instructions stored in a readable storage medium. When the computer program is executed by a computer, the technical solution shown in the above method embodiments is executed. The specific implementation method and technical effect are similar, and will not be described again here.

[0245] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0246] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various different variations of embodiments suitable for specific application considerations.

[0247] In this application, terms such as "exemplary," "in some embodiments," and "in other embodiments" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the term "exemplary" is used to present the concept in a specific manner.

[0248] In this application, the terms "of", "corresponding", "corresponding", and "related" may sometimes be used interchangeably. It should be noted that when the distinction is not emphasized, they have the same meaning.

Claims

1. A refrigerator, characterized in that, include: The cabinet is constructed with a refrigerator compartment and a freezer compartment; The refrigeration system installed inside the enclosure includes: compressor; Condenser; A first evaporator is configured to provide cooling to the refrigerator compartment; A second evaporator is configured to provide cooling capacity to the freezer compartment; First control valve; Second control valve; First throttling device; and Second throttling device; Wherein, the compressor's exhaust port is connected to the condenser's inlet; the condenser's outlet is connected to the first inlet of the first control valve; the first outlet of the first control valve is connected to the inlet of the first evaporator via the first throttling device; the second outlet of the first control valve is connected to the inlet of the second evaporator via the second throttling device; the second evaporator's outlet is connected to the fourth outlet of the second control valve; the first evaporator's outlet is connected to the third outlet of the second control valve; and the second inlet of the second control valve is connected to the compressor's air inlet. When refrigerant is being charged into the first evaporator, the first outlet of the first control valve is open, the second outlet is closed, and the third and fourth outlets of the second control valve are closed. When refrigerant is being charged into the second evaporator, the fourth outlet of the second control valve is opened, the third outlet is closed, and the first and second outlets of the first control valve are closed. The amount of refrigerant charged in the first evaporator is different from the amount of refrigerant charged in the second evaporator.

2. The refrigerator according to claim 1, characterized in that, The refrigerator also includes a controller, which is electrically connected to the compressor, the first control valve, and the second control valve, and is configured to: Upon receiving the first charging command, the first control valve is controlled to open the first outlet and close the second outlet, and the second control valve is controlled to close the third outlet and the fourth outlet. The first charging command is used to indicate that a first mass of refrigerant has been charged into the compressor. The compressor is controlled to start so that a first mass of refrigerant inside the compressor is discharged to the condenser and the first evaporator; After the first evaporator is charged with refrigerant, upon receiving the second charging command, the second control valve is controlled to open the fourth outlet and close the third outlet, and the first control valve is controlled to close the first outlet and the second outlet, so that the second mass of refrigerant already charged in the compressor is discharged to the second evaporator. The second charging command is used to indicate that the second mass of refrigerant has been charged in the compressor.

3. The refrigerator according to claim 2, characterized in that, The controller is also configured to: If the compressor runs for a first duration, a first completion command is output, which is used to instruct the first evaporator to complete the refrigerant charging. When the duration for which the second control valve opens the fourth outlet, closes the third outlet, and controls the first control valve to close the first outlet and the second outlet reaches a second duration, a second completion command is output. The second completion command is used to instruct the second evaporator to complete the refrigerant charging.

4. The refrigerator according to claim 1, characterized in that, The refrigerator also includes a controller, which is electrically connected to the compressor, the first control valve, and the second control valve, and is configured to: Upon receiving a first control command, the system controls the first control valve to open the first outlet and close the second outlet, and controls the second control valve to close the third outlet and the fourth outlet; the first control command is used to indicate that refrigerant is about to be injected into the compressor. Upon receiving a third charging command, the compressor is controlled to start, so that the target mass of refrigerant charged in the compressor is discharged to the first evaporator. The third charging command is used to indicate that the target mass of refrigerant has been charged in the compressor. When the mass of refrigerant charged into the first evaporator is determined to be a first mass, the compressor is shut down, and the second control valve is opened to open the fourth outlet and closed the third outlet. The first control valve is then closed to close the first outlet and the second outlet, so that the remaining refrigerant in the compressor is discharged to the second evaporator; wherein the first mass is less than the target mass.

5. The refrigerator according to claim 4, characterized in that, The controller is also configured to: When the compressor is started, the first timer is activated to time the duration of refrigerant charging in the first evaporator; When the first timer reaches the first duration, the refrigerant content charged into the first evaporator is determined to be the first mass.

6. The refrigerator according to claim 5, characterized in that, The controller is also configured to: When the first timer reaches the third duration, it is determined that the refrigerant charging of the second evaporator is complete.

7. The refrigerator according to claim 4, characterized in that, The refrigeration system also includes a first pressure sensor, which is installed in the first evaporator to detect the pressure of the refrigerant in the first evaporator; The controller is also configured to: After the compressor is started, the first pressure is obtained through the first pressure sensor; If the first pressure reaches the first preset value, the refrigerant content charged into the first evaporator is determined to be the first mass.

8. The refrigerator according to claim 7, characterized in that, The refrigeration system also includes a second pressure sensor, which is installed inside the second evaporator to detect the pressure of the refrigerant inside the second evaporator; The controller is also configured to: After controlling the compressor to shut down, controlling the second control valve to open the fourth outlet and close the third outlet, and controlling the first control valve to close the first outlet and the second outlet, the second pressure is obtained through the second pressure sensor; When the second pressure reaches the second preset value, it is determined that the refrigerant filling of the second evaporator is complete.

9. The refrigerator according to any one of claims 2-8, characterized in that, The controller is also configured to: When it is determined that the second evaporator has completed refrigerant charging, the first control valve is controlled to close the first outlet, open the second outlet, and the compressor is started to cool the freezer compartment. When the freezer compartment finishes cooling, the first control valve is controlled to open the first outlet and close the second outlet, and the second control valve is controlled to open the third outlet and close the fourth outlet, so as to achieve cooling of the refrigerator compartment. When the refrigeration of the cold compartment is completed, the compressor is shut down.

10. A method for controlling a refrigerator, characterized in that, The refrigerator includes: The cabinet is constructed with a refrigerator compartment and a freezer compartment; The refrigeration system installed inside the enclosure includes: compressor; Condenser; A first evaporator is configured to provide cooling to the refrigerator compartment; A second evaporator is configured to provide cooling capacity to the freezer compartment; First control valve; Second control valve; First throttling device; and Second throttling device; Wherein, the compressor's exhaust port is connected to the condenser's inlet; the condenser's outlet is connected to the first inlet of the first control valve; the first outlet of the first control valve is connected to the inlet of the first evaporator via the first throttling device; the second outlet of the first control valve is connected to the inlet of the second evaporator via the second throttling device; the second evaporator's outlet is connected to the fourth outlet of the second control valve; the first evaporator's outlet is connected to the third outlet of the second control valve; and the second inlet of the second control valve is connected to the compressor's air inlet. The method includes: When it is determined that refrigerant is to be charged into the first evaporator, the first outlet of the first control valve is opened, the second outlet is closed, and the third and fourth outlets of the second control valve are closed. When it is determined that refrigerant is to be charged into the second evaporator, the fourth outlet of the second control valve is opened, the third outlet is closed, and the first outlet and the second outlet of the first control valve are closed. The amount of refrigerant charged in the first evaporator is different from the amount of refrigerant charged in the second evaporator.

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