Control method and control device of single-system refrigerator and single-system refrigerator

Abstract

The invention relates to the technical field of refrigeration, and provides a control method and device of a single-system refrigerator and the single-system refrigerator. The control method of the single-system refrigerator comprises the steps that a first comparison result between the current temperature of a refrigerating chamber and the target temperature of the refrigerating chamber is obtained, and a second comparison result between the current temperature of a freezing chamber and the target temperature of the freezing chamber is obtained; the operation condition of the single-system refrigerator is determined based on the first comparison result and the second comparison result, a pre-stored adjusting mode of the single-system refrigerator is called based on the operation condition, and a mapping relation exists between the operation condition and multiple different adjusting modes; and adjusting at least one of a refrigerating fan, a freezing fan, a compressor and a heating wire in a refrigerating chamber based on the adjusting mode. According to the control method of the single-system refrigerator, the cooling capacity is intelligently distributed in the refrigerating chamber and the freezing chamber, and the accuracy of temperature control is improved.

Description

Technical Field

[0001] This invention relates to the field of refrigeration technology, and in particular to a control method, control device, and single-system refrigerator for a single-system refrigerator. Background Technology

[0002] In a single-system refrigerator that prevents odor mixing, the refrigerator compartment and the freezer compartment share the same compressor and refrigeration piping. When either compartment requires cooling, the compressor must start running. However, the evaporator in the non-cooled compartment will also work, resulting in extra cooling consumption, higher energy consumption, and poor energy-saving performance.

[0003] To address this, the industry has proposed reducing energy consumption by decreasing the refrigerator compartment fan speed and increasing the freezer compartment fan speed and compressor speed when the refrigerator compartment's heat load is lower than the freezer compartment's. However, in actual refrigerator operation, the heat load status of the refrigerator and freezer compartments changes dynamically in real time, making this adjustment method, which only targets specific situations, difficult to meet actual operational needs. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in related technologies. To this end, this invention proposes a control method for a single-system refrigerator. This method adjusts the refrigerator fan, freezer fan, and compressor based on the real-time temperature relationship between the current and target temperatures of the refrigerator compartment and the freezer compartment. This achieves dynamic adjustment of the refrigerator fan, freezer fan, and compressor according to the heat load changes in the refrigerator and freezer compartments, enabling intelligent distribution of cooling capacity between the two compartments. This improves the accuracy of temperature control in the refrigerator and freezer compartments and meets the actual operational needs of the refrigerator.

[0005] The present invention also proposes a single-system refrigerator.

[0006] This invention provides a control method for a single-system refrigerator, comprising: acquiring a first comparison result between the current temperature of the refrigerator compartment and a target temperature of the refrigerator compartment, and acquiring a second comparison result between the current temperature of the freezer compartment and a target temperature of the freezer compartment; determining the operating status of the single-system refrigerator based on the first comparison result and the second comparison result; invoking a pre-stored adjustment mode of the single-system refrigerator based on the operating status, wherein there is a mapping relationship between the operating status and multiple different adjustment modes; and adjusting at least one of the refrigerator fan, freezer fan, compressor, and heating wire in the refrigerator compartment based on the adjustment mode.

[0007] According to a control method for a single-system refrigerator provided by the present invention, the step of adjusting at least one of the refrigeration fan, the freezing fan, the compressor, and the heating wire in the refrigerator compartment based on the adjustment mode includes: adjusting the gear of at least one of the refrigeration fan, the freezing fan, and the compressor, and / or adjusting the operating rate of at least one of the refrigeration fan and the freezing fan, and / or controlling the on / off of the heating wire.

[0008] According to a control method for a single-system refrigerator provided by the present invention, adjusting the speed of at least one of the refrigeration fan, the freezing fan, and the compressor includes: dividing the adjustment process into multiple refrigeration cycles; adjusting the speed of the refrigeration fan in each of the initial first set number of refrigeration cycles; and after the first set number of refrigeration cycles, if the operating condition remains unchanged, adjusting the speed of the refrigeration fan and the freezing fan in each subsequent refrigeration cycle.

[0009] According to a control method for a single-system refrigerator provided by the present invention, the method further includes: after the first set number and the second set number of cooling cycles have passed sequentially, if the operating condition remains unchanged, adjusting the speed of the refrigeration fan, the speed of the freezing fan and the speed of the compressor in each subsequent cooling cycle, wherein the second set number is not less than the first set number.

[0010] According to the control method of a single-system refrigerator provided by the present invention, the duration of the refrigeration cycle is positively correlated with the ambient temperature.

[0011] According to a control method for a single-system refrigerator provided by the present invention, if the first comparison result in the operation state is that the current temperature of the refrigerator compartment has reached the target temperature of the refrigerator compartment, and the second comparison result is that the current temperature of the freezer compartment has not reached the target temperature of the freezer compartment, then the compressor is turned off and the heating wire is turned on.

[0012] According to a control method for a single-system refrigerator provided by the present invention, in adjusting the operating rate of at least one of the refrigeration fan and the freezing fan: the operating rate is positively correlated with the fan speed, wherein the fan includes at least one of the refrigeration fan and the freezing fan and / or the operating rate is positively correlated with the ambient temperature; and / or, with a set duration as a fan start-stop cycle, the operating rate of the fan is controlled within each start-stop cycle, wherein the fan includes at least one of the refrigeration fan and the freezing fan.

[0013] According to a control method for a single-system refrigerator provided by the present invention, the operating conditions include four types: In the first operating condition, the current temperature of the refrigerator compartment in the first comparison result does not reach the target temperature of the refrigerator compartment, and the current temperature of the freezer compartment in the second comparison result does not reach the target temperature of the freezer compartment; In the second operating condition, the current temperature of the refrigerator compartment in the first comparison result does not reach the target temperature of the refrigerator compartment, and the current temperature of the freezer compartment in the second comparison result reaches the target temperature of the freezer compartment; In the third operating condition, the current temperature of the refrigerator compartment in the first comparison result reaches the target temperature of the refrigerator compartment, and the current temperature of the freezer compartment in the second comparison result does not reach the target temperature of the freezer compartment; In the fourth operating condition, the current temperature of the refrigerator compartment in the first comparison result reaches the target temperature of the refrigerator compartment, and the current temperature of the freezer compartment in the second comparison result reaches the target temperature of the freezer compartment.

[0014] According to a control method for a single-system refrigerator provided by the present invention, the adjustment modes include a first adjustment mode corresponding to the first operating condition, in which the speed of the refrigeration fan increases by one level, the speed of the refrigeration fan remains unchanged, decreases by one level, or increases by one level, and the speed of the compressor increases by one level; the adjustment modes also include a second adjustment mode corresponding to the second operating condition, in which the speed of the refrigeration fan increases by one level, the speed of the refrigeration fan decreases by one level, and the speed of the compressor increases by one level; the adjustment modes also include a third adjustment mode corresponding to the third operating condition, in which the speed of the refrigeration fan decreases by one level, the speed of the refrigeration fan increases by one level, and the speed of the compressor increases or decreases by one level; the adjustment modes also include a fourth adjustment mode corresponding to the fourth operating condition, in which the speeds of the refrigeration fan, the refrigeration fan, and the compressor remain unchanged from the previous refrigeration cycle.

[0015] The present invention also provides a control device for a single-system refrigerator, comprising: an acquisition module, configured to acquire a first comparison result between the current temperature of the refrigerator compartment and a target temperature of the refrigerator compartment, and to acquire a second comparison result between the current temperature of the freezer compartment and a target temperature of the freezer compartment; a determination module, configured to determine the operating status of the single-system refrigerator based on the first comparison result and the second comparison result, and to call a pre-stored adjustment mode of the single-system refrigerator based on the operating status, wherein there is a mapping relationship between the operating status and multiple different adjustment modes; and an adjustment module, configured to adjust at least one of the refrigerator fan, the freezer fan, the compressor, and the heating element in the refrigerator compartment based on the adjustment mode.

[0016] The present invention also provides a single-system refrigerator, comprising: a cabinet having a refrigerator compartment and a freezer compartment; a compressor disposed within the cabinet; a refrigerator evaporator disposed within the cabinet; a freezer evaporator disposed within the cabinet and connected in series with the refrigerator evaporator; a refrigerator fan disposed within the cabinet for blowing cold air into the refrigerator compartment; a freezer fan disposed within the cabinet for blowing cold air into the freezer compartment; and a controller electrically connected to the compressor, the refrigerator fan, and the freezer fan, the controller being used to execute the control method for the single-system refrigerator described above.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below 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 effort.

[0019] Figure 1 This is a flowchart of a single-system refrigerator control method provided in an embodiment of the present invention; Figure 2 This is a structural schematic diagram of a single-system refrigerator provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the control device for a single-system refrigerator provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the electronic device provided in an embodiment of the present invention.

[0020] Figure label: 201: Compressor; 202: Condenser; 203: Throttling device; 204: Refrigeration evaporator; 205: Freezing evaporator; 206: Refrigeration fan; 207: Freezing fan; 301: Acquisition module; 302: Determination module; 303: Adjustment module; 401: Processor; 402: Communication interface; 403: Memory; 404: Communication bus. Detailed Implementation

[0021] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0024] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0026] The following is combined with Figures 1-4 This invention describes a control method for a single-system refrigerator and a single-system refrigerator as provided in an embodiment of the invention.

[0027] like Figure 1 As shown, in an embodiment of the present invention, the control method for a single-system refrigerator specifically includes the following steps: Step 101: Obtain a first comparison result between the current temperature of the refrigerator compartment and the target temperature of the refrigerator compartment, and obtain a second comparison result between the current temperature of the freezer compartment and the target temperature of the freezer compartment; Step 102: Based on the first comparison result and the second comparison result, determine the operating status of the single-system refrigerator, and call the pre-stored adjustment mode of the single-system refrigerator based on the operating status, wherein there is a mapping relationship between the operating status and multiple different adjustment modes; Step 103: Based on the adjustment mode, adjust at least one of the refrigerator fan, freezer fan, compressor and heating wire in the refrigerator compartment.

[0028] Specifically, for the refrigerator compartment, the first comparison result has two possibilities: either the current temperature has reached the target temperature, or the current temperature has not reached the target temperature. Similarly, for the freezer compartment, the second comparison result also has two possibilities: either the current temperature has reached the target temperature, or the current temperature has not reached the target temperature. In this embodiment, "reaching" includes the case where the current temperature equals the target temperature. Therefore, based on the first and second comparison results, the single-system refrigerator can operate in four ways: the first operating condition is that neither the refrigerator nor the freezer compartment has reached the target temperature; the second operating condition is that both the refrigerator and freezer compartments have reached the target temperature; the third operating condition is that both the refrigerator and freezer compartments have reached the target temperature; and the fourth operating condition is that both the refrigerator and freezer compartments have reached the target temperature.

[0029] Each operating condition has a corresponding preset adjustment mode. Therefore, in this embodiment of the invention, the single-system refrigerator has four adjustment modes. When the single-system refrigerator starts running, the current operating condition is obtained based on the current first comparison result and the second comparison result. Based on the current operating condition, an adjustment mode is invoked, and the refrigerator fan, freezer fan, compressor, and refrigerator compartment are adjusted according to the adjustment mode. In each adjustment mode, at least one of the refrigerator fan, freezer fan, and compressor can be adjusted. For example, when only the refrigerator fan is adjusted, the fan speed and / or operating rate can be adjusted. During adjustment, the refrigerator fan, freezer fan, and compressor can also be adjusted in priority order, such as adjusting the refrigerator fan first, then the freezer fan, and finally the compressor. If the current temperature of the refrigerator compartment reaches the target temperature, but the current temperature of the freezer compartment does not reach the target temperature, the heating element can be turned on to defrost the refrigerator compartment because the refrigerator compartment temperature is lower.

[0030] Optionally, in the first adjustment mode, the speed of the refrigeration fan can be increased by one level, the speed of the refrigeration fan can remain unchanged, and the speed of the compressor fan can be increased by one level; in the second adjustment mode, the speed of the refrigeration fan can be increased by one level, the speed of the refrigeration fan can be decreased by one level, and the speed of the compressor fan can be increased by one level; in the third adjustment mode, the speed of the refrigeration fan can be decreased by one level, the speed of the refrigeration fan can be increased by one level, and the speed of the compressor can be increased or decreased by one level; in the fourth adjustment mode, the speeds of the refrigeration fan, the refrigeration fan, and the compressor are the same as those in the previous refrigeration cycle.

[0031] The single-system refrigerator control method provided in this invention adjusts the refrigerator fan, freezer fan, and compressor based on the real-time temperature relationship between the current and target temperatures of the refrigerator compartment and the freezer compartment. This achieves dynamic adjustment of the refrigerator fan, freezer fan, and compressor according to the heat load changes of the refrigerator and freezer compartments, enabling intelligent distribution of cooling capacity between the refrigerator and freezer compartments, improving the accuracy of temperature control in the refrigerator and freezer compartments, and meeting the actual operating needs of the refrigerator.

[0032] When adjusting at least one of the refrigeration fan, the freezing fan, the compressor, and the heating element, the gear of at least one of the refrigeration fan, the freezing fan, and the compressor can be adjusted, such as increasing or decreasing at least one gear; or the operating rate of at least one of the refrigeration fan and the freezing fan can be adjusted; or the gear of the refrigeration fan, the freezing fan, and the compressor, as well as the operating rate of the refrigeration fan and the freezing fan, can be adjusted simultaneously.

[0033] Table 1 shows one of the adjustment methods for a single-system refrigerator under various operating conditions. The refrigerant first flows through the refrigeration evaporator and then through the refrigerator evaporator.

[0034] Table 1: First operating scenario Second operating scenario Third operating scenario The fourth operating scenario Load control progressive cycle Refrigerator Not achieved Not achieved achieve achieve / freezer Not achieved achieve Not achieved achieve / Refrigeration fan speed settings +1 gear +1 gear -1 gear constant / Refrigeration fan speed constant -1 gear +1 gear constant K1 Press speed +1 gear +1 gear -1 gear constant K2 heating wire It won't turn on when powered on or off when powered off. It won't turn on when powered on or off when powered off. Power on but won't turn on, power off but will be forced to turn on constant K3 In an embodiment of the present invention, when adjusting at least one of the refrigeration fan, the freezing fan, and the compressor, the adjustment process can be divided into multiple refrigeration cycles. In each of the initial first set number of refrigeration cycles, the refrigeration fan is adjusted. After the first set number of refrigeration cycles, if the operating condition remains unchanged, the refrigeration fan and the freezing fan are adjusted in each subsequent refrigeration cycle.

[0035] Specifically, as shown in Table 1, after determining the operating conditions, the speed of the refrigeration fan is first adjusted according to the adjustment mode for each operating condition in Table 1. Specifically, in the first and second operating conditions, the speed of the refrigeration fan is increased by one level; in the third operating condition, the speed of the refrigeration fan is decreased by one level; in the fourth operating condition, the speed of the refrigeration fan is the same as that of the refrigeration fan in the previous refrigeration cycle.

[0036] After running the first set number of cooling cycles at the adjusted speed, the current temperatures of the refrigerator compartment and the freezer compartment are obtained again and compared with the target temperature. For example, assuming the current operating condition is the second operating condition, after increasing the speed of the refrigerator fan by one level and running the first set number of cooling cycles, if the current temperature of the refrigerator compartment still has not reached the target temperature, but the current temperature of the freezer compartment has reached the target temperature, then the adjustment mode corresponding to the second operating condition continues. At this time, according to Table 1, the speed of the refrigerator fan is increased by one level, and the speed of the freezer fan is decreased by one level to increase the cooling capacity of the refrigerator compartment and decrease the cooling capacity of the freezer compartment.

[0037] After the first set number and the second set number of refrigeration cycles are completed in sequence, if the operating condition remains unchanged, the speed of the refrigeration fan, the speed of the freezer fan, and the speed of the compressor will be adjusted in each subsequent refrigeration cycle, wherein the second set number is not less than the first set number.

[0038] Specifically, as shown in Table 1, after the refrigerator fan and freezer fan have been adjusted and run for the second set number of cooling cycles, if the current temperature of the refrigerator compartment still has not reached the target temperature, but the current temperature of the freezer compartment has reached the target temperature, the operating condition obtained from the first comparison result and the second comparison result is still the second operating condition. At this time, according to Table 1, the refrigerator fan speed is increased by one level, the freezer fan speed is decreased by one level, and the compressor speed is increased by one level to further increase the cooling capacity of the refrigerator compartment and decrease the cooling capacity of the freezer compartment.

[0039] In an embodiment of the present invention, when adjusting the speed of the refrigeration fan, the speed of the freezer fan, and the speed of the compressor, assuming that the first set number of refrigeration cycles is 5 refrigeration cycles, the speed of the refrigeration fan is increased by one level in each refrigeration cycle. That is, the speed of the refrigeration fan is increased by a total of 5 levels within the first set number of refrigeration cycles. Correspondingly, the speed adjustment method of the freezer fan and the compressor is the same as that of the refrigeration fan.

[0040] Furthermore, during the adjustment process, when the speed of the refrigeration fan, the speed of the freezer fan, and the speed of the compressor are adjusted to the maximum or minimum value, they will operate at the maximum or minimum value in the subsequent refrigeration cycle.

[0041] Furthermore, in embodiments of the present invention, in order to adjust each load in a timely manner, the maximum duration of a single cooling cycle can be preset according to the ambient temperature, and the duration of the cooling cycle is positively correlated with the ambient temperature. Table 2 shows the maximum duration of the cooling cycle under various ambient temperatures.

[0042] Table 2: Ambient temperature range RT < 8℃ 8≤RT<13℃ 13≤RT<19℃ 19≤RT<23℃ 23≤RT<28℃ 28≤RT<35℃ 35≤RT<40℃ RT≥40℃ Longest time 40min 50min 70min 90min 100min 120min 200min 240min In embodiments of the present invention, the first operating mode corresponds to the first adjustment mode. As shown in Table 1, in the first adjustment mode, based on the previous refrigeration cycle, the speed of the refrigeration fan is increased by one level, and after adjustment, K1 refrigeration cycles are run. After K1 refrigeration cycles, if the current temperature of the refrigerator compartment and the current temperature of the freezer compartment still have not reached the target temperature, then in K2 refrigeration cycles, the speed of the refrigeration fan is increased by one level in each refrigeration cycle, while the speed of the freezer fan remains unchanged as in the previous refrigeration cycle. After running K2 refrigeration cycles, if the current temperature of the refrigerator compartment and the current temperature of the freezer compartment still have not reached the target temperature, then in K3 refrigeration cycles, the speed of the refrigeration fan is increased by one level in each refrigeration cycle, while the speed of the freezer fan remains unchanged, and the speed of the compressor is increased by one level. After running K3 refrigeration cycles, if the current temperature of the refrigerator compartment still has not reached the target temperature, the refrigerator compartment is not frosted, and the heating element is not turned on. In this embodiment, since the refrigerant flows through the evaporator first, the refrigeration effect of the freezer is better. Therefore, the speed of the refrigeration fan is continuously increased during adjustment, while the speed of the refrigeration fan is kept constant, so as to reasonably distribute the cooling capacity of the refrigeration and freezer compartments.

[0043] The second operating condition corresponds to the second adjustment mode, as shown in Table 1. In the second adjustment mode, based on the previous cooling cycle, the speed of the refrigeration fan is increased by one level, and then K1 cooling cycles are run. After K1 cooling cycles, if the current temperature of the refrigerator compartment still has not reached the target temperature, but the current temperature of the freezer compartment has reached the target temperature, then in K2 cooling cycles, the speed of the refrigeration fan is increased by one level and the speed of the freezer fan is decreased by one level in each cooling cycle to increase the cooling capacity of the refrigerator compartment and decrease the cooling capacity of the freezer compartment. After K2 cooling cycles, if the current temperature of the refrigerator compartment still has not reached the target temperature, but the current temperature of the freezer compartment has reached the target temperature, then in K3 cooling cycles, the speed of the refrigeration fan is increased by one level and the speed of the freezer fan is decreased by one level in each cooling cycle, while the speed of the compressor is increased by one level to further increase the cooling capacity of the refrigerator compartment and decrease the cooling capacity of the freezer compartment. If the current temperature of the refrigerator compartment still does not reach the target temperature after running K3 cooling cycles, and there is no frost in the refrigerator compartment, the heating wire will not turn on.

[0044] The third operating condition corresponds to the third adjustment mode, as shown in Table 1. In the third adjustment mode, based on the previous cooling cycle, the refrigeration fan speed is reduced by one level, and K1 cooling cycles are run. After K1 cooling cycles, if the current temperature of the refrigerator compartment still reaches the target temperature, but the current temperature of the freezer compartment still does not reach the target temperature, then in K2 cooling cycles, the refrigeration fan speed is reduced by one level and the refrigeration fan speed is increased by one level in each cooling cycle to reduce the cooling capacity of the refrigerator compartment and increase the cooling capacity of the freezer compartment. After K2 cooling cycles, if the current temperature of the refrigerator compartment still reaches the target temperature, but the current temperature of the freezer compartment still does not reach the target temperature, then in K3 cooling cycles, the refrigeration fan speed is reduced by one level and the refrigeration fan speed is increased by one level in each cooling cycle, while the compressor speed is reduced by one level to further reduce the cooling capacity of the refrigerator compartment and increase the cooling capacity of the freezer compartment. After running K3 cooling cycles, if the current temperature of the refrigerator compartment remains at the target temperature, it indicates that the current temperature of the refrigerator compartment is low and frost may have formed inside. Therefore, after K3 cooling cycles, the heating element can be turned on to defrost while the compressor is off.

[0045] The fourth operating condition corresponds to the fourth adjustment mode, as shown in Table 1. In the fourth adjustment mode, the speed of the refrigeration fan, the speed of the freezer fan, the speed of the compressor, and the status of the heating wire are all maintained at the speed or status of the previous refrigeration cycle.

[0046] As described above, in the embodiments of the present invention, the operating status of a single-system refrigerator can be dynamically adjusted according to the real-time heat load of the refrigerator compartment and the freezer compartment to intelligently allocate the cooling capacity of the refrigerator compartment and the freezer compartment, and accurately control the temperature of the refrigerator compartment and the freezer compartment, so as to avoid extra consumption of cooling capacity and further improve the energy-saving effect of the single-system refrigerator.

[0047] Table 3 shows the second adjustment method for a single-system refrigerator under various operating conditions. In this method, the refrigerant first flows through the refrigeration evaporator and then through the freezing evaporator.

[0048] Table 3: First operating scenario Second operating scenario Third operating scenario The fourth operating scenario Load control progressive cycle Refrigerator Not achieved Not achieved achieve achieve / freezer Not achieved achieve Not achieved achieve / Refrigeration fan speed settings +1 gear +1 gear -1 gear constant / Refrigeration fan speed constant -1 gear +1 gear constant K1 Press speed +1 gear +1 gear +1 gear constant K2 heating wire It won't turn on when powered on or off when powered off. It won't turn on when powered on or off when powered off. Power on but won't turn on, power off but will be forced to turn on constant K3 According to Tables 1 and 3, the adjustment methods for the refrigerator fan, freezer fan, compressor, and heating element are the same in the first, second, and fourth operating states of a single-system refrigerator. The compressor adjustment method differs only in the third operating state. This is because, in Table 1, the refrigerant passes through the freezer evaporator first, resulting in better cooling in the freezer compartment, allowing for a slight reduction in compressor speed to lower energy consumption. However, in Table 3, the refrigerant passes through the refrigerator evaporator first, leading to better cooling in the refrigerator compartment. Since the freezer compartment's current temperature has not yet reached the target temperature, more cooling capacity is needed to further lower the freezer temperature. Therefore, the compressor speed can be increased by one level to increase cooling capacity.

[0049] Table 4 shows the third adjustment method for a single-system refrigerator under various operating conditions. In this method, the refrigerant first flows through the refrigeration evaporator and then through the refrigerator evaporator.

[0050] Table 4: First operating scenario Second operating scenario Third operating scenario The fourth operating scenario Load control progressive cycle Refrigerator Not achieved Not achieved achieve achieve / freezer Not achieved achieve Not achieved achieve / Refrigeration fan speed settings +1 gear +1 gear -1 gear constant / Refrigeration fan speed -1 gear -1 gear +1 gear constant K1 Press speed +1 gear +1 gear -1 gear constant K2 heating wire It won't turn on when powered on or off when powered off. It won't turn on when powered on or off when powered off. Power on but won't turn on, power off but will be forced to turn on constant K3 When adjusting the refrigeration fan, freezer fan, compressor, and heating element according to Tables 1 and 3, there is no clear priority between the refrigeration of the refrigerator compartment and the freezer compartment. The priority is determined solely by whether the current temperatures of the refrigerator compartment and the freezer compartment have reached the target temperature within a refrigeration cycle. To increase the refrigeration priority of the refrigerator compartment, as shown in Table 4, under the first operating condition, the freezer fan speed can be reduced by one level from the speed of the previous refrigeration cycle.

[0051] Table 5 shows the fourth adjustment method for a single-system refrigerator under various operating conditions. In this method, the refrigerant first flows through the freezing evaporator and then through the refrigeration evaporator.

[0052] Table 5: First operating scenario Second operating scenario Third operating scenario The fourth operating scenario Load control progressive cycle Refrigerator Not achieved Not achieved achieve achieve / freezer Not achieved achieve Not achieved achieve / Refrigeration fan speed settings +1 gear +1 gear -1 gear constant / Refrigeration fan speed +1 gear -1 gear +1 gear constant K1 Press speed +1 gear +1 gear -1 gear constant K2 heating wire It won't turn on when powered on or off when powered off. It won't turn on when powered on or off when powered off. Power on but won't turn on, power off but will be forced to turn on constant K3 When adjusting the refrigeration fan, freezer fan, compressor, and heating element according to Tables 1 and 3, there is no clear priority between the refrigeration of the refrigerator compartment and the freezer compartment. The priority is determined solely by whether the current temperatures of the refrigerator compartment and the freezer compartment have reached the target temperature within a refrigeration cycle. To increase the refrigeration priority of the freezer compartment, as shown in Table 5, under the first operating condition, the speed of the freezer fan can be increased by one level from the speed of the previous refrigeration cycle.

[0053] In an embodiment of the present invention, the control method for a single-system refrigerator further includes: setting the maximum and minimum values ​​of the refrigeration fan speed, the maximum and minimum values ​​of the freezer fan speed, and the maximum and minimum values ​​of the compressor speed based on the ambient temperature.

[0054] Specifically, when adjusting the refrigeration fan, freezer fan, and compressor, the maximum and minimum values ​​for adjustment can be preset.

[0055] Table 6 shows the minimum and maximum values ​​of the refrigeration fan speed adjustment at various temperatures, where the rated speed Vr of the refrigeration fan is assumed to be 1600 rpm.

[0056] Table 6: Ambient temperature range RT < 8℃ 8≤RT<13℃ 13≤RT<19℃ 19≤RT<23℃ 23≤RT<28℃ 28≤RT<35℃ 35≤RT<40℃ RT≥40℃ Minimum value 30%Vr 35%Vr 40%Vr 45%Vr 50%Vr 60%Vr 70%Vr 80%Vr Maximum value 60%Vr 65%Vr 70%Vr 75%Vr 80%Vr 90%Vr 100%Vr 100%Vr Table 7 shows the minimum and maximum values ​​for the refrigeration fan speed adjustment at various temperatures, where the rated speed Vf of the refrigeration fan is assumed to be 1400 rpm.

[0057] Table 7: Ambient temperature range RT < 8℃ 8≤RT<13℃ 13≤RT<19℃ 19≤RT<23℃ 23≤RT<28℃ 28≤RT<35℃ 35≤RT<40℃ RT≥40℃ Minimum value 30%Vr 35%Vr 40%Vr 45%Vr 50%Vr 60%Vr 70%Vr 80%Vr Maximum value 60%Vr 65%Vr 70%Vr 75%Vr 80%Vr 90%Vr 100%Vr 100%Vr Table 8 shows the minimum and maximum values ​​of compressor speed adjustment at various temperatures, where the rated compressor speed Vc is assumed to be 4500 rpm.

[0058] Table 8: Ambient temperature range RT < 8℃ 8≤RT<13℃ 13≤RT<19℃ 19≤RT<23℃ 23≤RT<28℃ 28≤RT<35℃ 35≤RT<40℃ RT≥40℃ Minimum value (rpm) 900 1200 1200 1500 1500 1680 2100 2400 Maximum value (rpm) 2400 2520 3000 3600 3900 4200 4320 4500 Furthermore, in embodiments of the present invention, the operating rate of the refrigeration fan and the freezing fan is positively correlated with the gear level, and the operating rate of the refrigeration fan and the freezing fan is also positively correlated with the ambient temperature.

[0059] Specifically, in the embodiments of the present invention, in addition to adjusting the speed of the refrigeration fan and the freezing fan, a preset time period can be used as a complete cycle. Within the preset cycle, the refrigeration fan and the freezing fan are turned on at a certain start-up rate to further increase the adjustment range and adjustment capability of the refrigeration fan and the freezing fan.

[0060] Table 9 shows the operating rates of refrigeration fans and freezer fans at the same speed and temperature.

[0061] Table 9: Ambient temperature range RT < 8℃ 8≤RT<13℃ 13≤RT<19℃ 19≤RT<23℃ 23≤RT<28℃ 28≤RT<35℃ 35≤RT<40℃ RT≥40℃ Fan operating rate 25% 30% 35% 45% 60% 75% 90% 100% To further enhance the adjustability of refrigeration and freezing fans, in addition to setting different operating rates for the refrigeration and freezing fans at the same setting based on the ambient temperature, the operating rates of the fans at different settings can also be set based on the difference between the fan setting and the ambient temperature.

[0062] Table 10 shows the operating rates of refrigeration fans and freezer fans at different temperatures and speeds.

[0063] Table 10:

[0064] like Figure 2As shown, this embodiment of the invention also provides a single-system refrigerator, including: a cabinet, a compressor 201, a refrigerator evaporator 204, a freezer evaporator 205, a refrigerator fan 206, a freezer fan 207, and a controller. The cabinet has a refrigerator compartment and a freezer compartment. The compressor 201, refrigerator evaporator 204, and freezer evaporator 205 are all located within the cabinet, with the freezer evaporator 205 connected in series with the refrigerator evaporator 204. The refrigerator fan 206 and freezer fan 207 are also located within the cabinet. The refrigerator fan 206 blows cold air into the refrigerator compartment, and the freezer fan 207 blows cold air into the freezer compartment. The controller is electrically connected to the compressor 201, refrigerator fan 206, and freezer fan 207, and the controller is used to execute the control method for the single-system refrigerator.

[0065] Specifically, in this embodiment, compressor 201 compresses the refrigerant into a high-temperature, high-pressure gas. The gas enters condenser 202 for cooling and condensation into a high-pressure liquid. After passing through throttling device 203, the high-pressure liquid can flow first through refrigeration evaporator 205 and then through refrigerator evaporator 204; or it can flow first through refrigerator evaporator 204 and then through refrigeration evaporator 205. When it flows first through refrigeration evaporator 205, the controller adjusts the speed of refrigerator fan, refrigeration fan, and compressor according to the control logic in Table 1, and simultaneously controls whether the heating wire operates. When it flows first through refrigerator evaporator 204, the controller adjusts the speed of refrigerator fan, refrigeration fan, and compressor according to the control logic in Table 3, and simultaneously controls whether the heating wire operates.

[0066] The single-system refrigerator provided in this invention can intelligently distribute cooling capacity between the refrigerator and freezer compartments by dynamically adjusting the speed of the refrigerator fan, freezer fan, and compressor, regardless of the heat load of the refrigerator and freezer compartments. This allows for precise control of the temperature in both compartments, avoids additional cooling consumption, and improves energy efficiency.

[0067] like Figure 3 As shown, this embodiment of the invention also provides a control device for a single-system refrigerator, including: an acquisition module 301, a determination module 302, and an adjustment module 303. The acquisition module 301 is used to acquire a first comparison result between the current temperature of the refrigerator compartment and the target temperature of the refrigerator compartment, and to acquire a second comparison result between the current temperature of the freezer compartment and the target temperature of the freezer compartment; the determination module 302 is used to determine the operating status of the single-system refrigerator based on the first and second comparison results, and to call a pre-stored adjustment mode for the single-system refrigerator based on the operating status, wherein there is a mapping relationship between the operating status and multiple different adjustment modes; the adjustment module 303 is used to adjust at least one of the refrigerator fan, the freezer fan, the compressor, and the heating element in the refrigerator compartment based on the adjustment mode.

[0068] Figure 4An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 4 As shown, the electronic device may include: a processor 401, a communication interface 402, a memory 403, and a communication bus 404, wherein the processor 401, the communication interface 402, and the memory 403 communicate with each other through the communication bus 404. The processor 401 can call logical instructions in the memory 403 to execute a control method for a single-system refrigerator. The control method includes: obtaining a first comparison result between the current temperature of the refrigerator compartment and the target temperature of the refrigerator compartment, and obtaining a second comparison result between the current temperature of the freezer compartment and the target temperature of the freezer compartment; determining the operating status of the single-system refrigerator based on the first comparison result and the second comparison result; calling a pre-stored adjustment mode of the single-system refrigerator based on the operating status, wherein there is a mapping relationship between the operating status and multiple different adjustment modes; and adjusting at least one of the refrigerator fan, the freezer fan, the compressor, and the heating element in the refrigerator compartment based on the adjustment mode.

[0069] Furthermore, the logical instructions in the aforementioned memory 403 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0070] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer is able to execute the control method for a single-system refrigerator provided by the above methods. The control method includes: obtaining a first comparison result between the current temperature of the refrigerator compartment and a target temperature of the refrigerator compartment, and obtaining a second comparison result between the current temperature of the freezer compartment and a target temperature of the freezer compartment; determining the operating status of the single-system refrigerator based on the first comparison result and the second comparison result; calling a pre-stored adjustment mode of the single-system refrigerator based on the operating status, wherein there is a mapping relationship between the operating status and multiple different adjustment modes; and adjusting at least one of the refrigerator fan, freezer fan, compressor, and heating wire in the refrigerator compartment based on the adjustment mode.

[0071] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements a control method for a single-system refrigerator provided by the methods described above. The control method includes: acquiring a first comparison result between the current temperature of the refrigerator compartment and a target temperature of the refrigerator compartment, and acquiring a second comparison result between the current temperature of the freezer compartment and a target temperature of the freezer compartment; determining the operating status of the single-system refrigerator based on the first and second comparison results; invoking a pre-stored adjustment mode of the single-system refrigerator based on the operating status, wherein there is a mapping relationship between the operating status and multiple different adjustment modes; and adjusting at least one of the refrigerator fan, freezer fan, compressor, and heating element in the refrigerator compartment based on the adjustment mode.

[0072] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0073] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0074] Finally, it should be noted that the above embodiments are only for illustrating the present invention and not for limiting the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A control method for a single-system refrigerator, characterized in that, include: Obtain a first comparison result between the current temperature of the refrigerator compartment and the target temperature of the refrigerator compartment, and obtain a second comparison result between the current temperature of the freezer compartment and the target temperature of the freezer compartment; Based on the first comparison result and the second comparison result, the operating status of the single-system refrigerator is determined, and the pre-stored adjustment mode of the single-system refrigerator is called based on the operating status, wherein there is a mapping relationship between the operating status and multiple different adjustment modes; Based on the aforementioned adjustment mode, at least one of the following components is adjusted: the refrigeration fan, the freezer fan, the compressor, and the heating element inside the refrigeration compartment.

2. The control method for a single-system refrigerator according to claim 1, characterized in that, The adjustment of at least one of the refrigeration fan, the freezer fan, the compressor, and the heating element in the refrigeration compartment based on the adjustment mode includes: Adjust the speed of at least one of the refrigeration fan, the freezing fan, and the compressor. And / or, Adjust the operating rate of at least one of the refrigeration fan and the freezing fan. And / or, Control the heating wire to turn on and off.

3. The control method for a single-system refrigerator according to claim 2, characterized in that, Adjusting the speed of at least one of the refrigeration fan, the freezer fan, and the compressor includes: The adjustment process is divided into multiple cooling cycles; Within each of the first predetermined number of refrigeration cycles, the speed of the refrigeration fan is adjusted; After the first set number of refrigeration cycles, if the operating conditions remain unchanged, the speed of the refrigeration fan and the speed of the freezing fan will be adjusted in each subsequent refrigeration cycle.

4. The control method for a single-system refrigerator according to claim 3, characterized in that, Also includes: After the first set number and the second set number of refrigeration cycles are passed in sequence, if the operating condition remains unchanged, the speed of the refrigeration fan, the speed of the freezing fan and the speed of the compressor are adjusted in each subsequent refrigeration cycle, wherein the second set number is not less than the first set number.

5. The control method for a single-system refrigerator according to claim 3 or 4, characterized in that, The duration of the cooling cycle is positively correlated with the ambient temperature.

6. The control method for a single-system refrigerator according to claim 2, characterized in that, If the first comparison result in the operation is that the current temperature of the refrigerator compartment has reached the target temperature of the refrigerator compartment, and the second comparison result is that the current temperature of the freezer compartment has not reached the target temperature of the freezer compartment, then the compressor is turned off and the heating wire is turned on.

7. The control method for a single-system refrigerator according to claim 2, characterized in that, In adjusting the operating rate of at least one of the refrigeration fan and the freezing fan: The operating rate is positively correlated with the fan speed, wherein the fan includes at least one of the refrigeration fan and the freezer fan. And / or, The power-on rate is positively correlated with ambient temperature; And / or, A fan start-stop cycle is defined as a set duration. Within each start-stop cycle, the start-up rate of the fan is controlled. The fan includes at least one of the refrigeration fan and the freezing fan.

8. The control method for a single-system refrigerator according to claim 1, characterized in that, The operating conditions include four types: In the first operating scenario, the current temperature of the refrigerator compartment in the first comparison result does not reach the target temperature of the refrigerator compartment, and the current temperature of the freezer compartment in the second comparison result does not reach the target temperature of the freezer compartment. In the second operating scenario, the current temperature of the refrigerator compartment in the first comparison result does not reach the target temperature of the refrigerator compartment, while the current temperature of the freezer compartment in the second comparison result reaches the target temperature of the freezer compartment. In the third operating scenario, the current temperature of the refrigerator compartment in the first comparison result reaches the target temperature of the refrigerator compartment, while the current temperature of the freezer compartment in the second comparison result does not reach the target temperature of the freezer compartment. In the fourth operating scenario, the current temperature of the refrigerator compartment in the first comparison result reaches the target temperature of the refrigerator compartment, and the current temperature of the freezer compartment in the second comparison result reaches the target temperature of the freezer compartment.

9. The control method for a single-system refrigerator according to claim 8, characterized in that, The adjustment mode includes a first adjustment mode corresponding to the first operating condition. In the first adjustment mode, the speed of the refrigeration fan increases by one level, the speed of the freezer fan remains unchanged, decreases by one level, or increases by one level, and the speed of the compressor increases by one level. The adjustment mode also includes a second adjustment mode corresponding to the second operating condition. In the second adjustment mode, the speed of the refrigeration fan is increased by one level, the speed of the freezer fan is decreased by one level, and the speed of the compressor is increased by one level. The adjustment mode also includes a third adjustment mode corresponding to the third operating condition. In the third adjustment mode, the speed of the refrigeration fan is reduced by one level, the speed of the freezer fan is increased by one level, and the speed of the compressor is increased or decreased by one level. The adjustment mode also includes a fourth adjustment mode corresponding to the fourth operating condition. In the fourth adjustment mode, the speed of the refrigeration fan, the speed of the freezer fan, and the speed of the compressor remain unchanged based on the previous refrigeration cycle.

10. A control device for a single-system refrigerator, characterized in that, include: The acquisition module is used to acquire a first comparison result between the current temperature of the refrigerator compartment and the target temperature of the refrigerator compartment, and to acquire a second comparison result between the current temperature of the freezer compartment and the target temperature of the freezer compartment; The determining module is used to determine the operating status of the single-system refrigerator based on the first comparison result and the second comparison result, and to call the pre-stored adjustment mode of the single-system refrigerator based on the operating status, wherein there is a mapping relationship between the operating status and multiple different adjustment modes; An adjustment module is used to adjust at least one of the refrigeration fan, the freezer fan, the compressor, and the heating wire in the refrigeration compartment based on the adjustment mode.

11. A single-system refrigerator, characterized in that, include: The container is equipped with a refrigerator compartment and a freezer compartment; The compressor is located inside the housing; A refrigerated evaporator is located inside the cabinet; A refrigeration evaporator is located inside the chamber and connected in series with the refrigeration evaporator; A refrigeration fan is installed inside the cabinet and is used to blow cold air into the refrigeration chamber. A refrigeration fan is installed inside the cabinet and is used to blow cold air into the refrigeration chamber. A controller, electrically connected to the compressor, the refrigeration fan, and the freezing fan, is used to perform the control method for a single-system refrigerator as described in any one of claims 1-9.

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