Dual-system defrosting control method and refrigerator

Abstract

The invention discloses a dual-system defrosting control method and a refrigerator, dual systems comprise a refrigeration system and a freezing system, and the defrosting control method comprises the steps that whether a freezing evaporator in the freezing system meets the defrosting requirement or not is judged; and if yes, the freezing evaporator and a refrigeration evaporator of the refrigeration system are synchronously started for defrosting, and a compressor stops running. In this way, the refrigeration evaporator does not conduct defrosting independently, only after the freezing evaporator meets the defrosting requirement, the refrigeration evaporator and the freezing evaporator are synchronously started for defrosting, and therefore the number of times of independent defrosting of the refrigeration evaporator is reduced, and the number of times of large temperature fluctuation of chambers in the refrigeration space corresponding to the refrigeration system is reduced; and the user experience is improved.

Description

Technical Field

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

[0002] As people's living standards improve, users have higher and higher requirements for food storage, such as precise temperature control and prevention of food odor mixing. These requirements are difficult to meet by traditional single-system refrigerators, so multi-system refrigerators have become very popular in this context.

[0003] Modern multi-system refrigerators typically include a crisper compartment and a variable-temperature compartment (with a minimum temperature above -5°C) within the refrigerator compartment. This causes a decrease in the temperature of the refrigerator evaporator and an increase in frost buildup, resulting in fewer defrost cycles for the freezer evaporator compared to the refrigerator evaporator. Current defrosting methods generally involve the refrigerator evaporator activating its heater to defrost based on accumulated refrigeration time. However, this method prevents the refrigerator compartment from cooling during defrosting, thus failing to maintain its temperature. Simultaneously, the refrigerator compartment also stops cooling during defrosting in the freezer compartment.

[0004] The above methods will lead to an increase in the number of defrosting cycles of the refrigeration evaporator, and the compartments in the refrigeration space will not be able to maintain the temperature during the defrosting process, resulting in more frequent large temperature fluctuations in the compartments and affecting the user experience. Summary of the Invention

[0005] This invention provides a dual-system defrosting control method and refrigerator to solve the problem in the prior art that the defrosting of the refrigerator compartment cannot be carried out simultaneously with the defrosting of the freezer compartment, resulting in an increase in the number of defrosting cycles in the refrigerator compartment and an increase in the number of large temperature fluctuations in the refrigerator compartment.

[0006] The technical solution of this invention is a dual-system defrosting control method, wherein the dual system includes a refrigeration system and a freezing system, and the defrosting control method includes:

[0007] Determine whether the evaporator in the refrigeration system has met the defrosting requirements;

[0008] If so, the refrigeration evaporator and the refrigeration evaporator of the refrigeration system will start defrosting synchronously, and the compressor will stop running.

[0009] Furthermore, based on the simultaneous activation of defrosting by the freezer evaporator and the refrigerator evaporator, the defrosting control method includes:

[0010] Obtain the first temperature of the refrigerated evaporator;

[0011] Independently determine whether the first temperature has reached the first preset temperature;

[0012] If so, the refrigerated evaporator will discontinue defrosting;

[0013] If not, the refrigerated evaporator continues to defrost.

[0014] Furthermore, according to the defrosting process of the refrigerated evaporator, the defrosting control method includes:

[0015] Obtain the second temperature of the refrigeration evaporator;

[0016] Determine whether the second temperature has reached the second preset temperature;

[0017] If so, the freezer evaporator and the refrigerator evaporator simultaneously exit defrosting;

[0018] If not, only the refrigerated evaporator continues to defrost.

[0019] Furthermore, based on the simultaneous activation of defrosting by the freezer evaporator and the refrigerator evaporator, the defrosting control method includes: obtaining a second temperature of the freezer evaporator;

[0020] Independently determine whether the second temperature has reached the second preset temperature;

[0021] If so, the freezer evaporator will discontinue defrosting;

[0022] If not, the freeze evaporator continues to defrost.

[0023] Further, according to the defrosting process of the refrigerated evaporator, the defrosting control method includes:

[0024] Obtain the first temperature of the refrigerated evaporator;

[0025] Determine whether the first temperature has reached the first preset temperature;

[0026] If so, the refrigerated evaporator will discontinue defrosting;

[0027] If not, only the refrigerated evaporator continues to defrost.

[0028] Further, it is determined whether the evaporator in the refrigeration system has met the defrosting requirements. The defrosting control method includes:

[0029] The compressor's operating time is monitored and accumulated in real time;

[0030] Determine whether the accumulated running time has reached the preset time;

[0031] If so, the freezer evaporator and the refrigerator evaporator will simultaneously begin defrosting;

[0032] If not, neither the freezer evaporator nor the refrigerator evaporator will activate defrosting.

[0033] The present invention also proposes a refrigerator, including a refrigeration space and a corresponding refrigeration system, and a freezing space and a corresponding freezing system; the refrigerator further includes:

[0034] A detection unit is used to detect whether the evaporator of the freezing space has met the defrosting requirements;

[0035] The main control unit is connected to the other detection units; the main control unit is used to synchronously start defrosting of the refrigeration evaporator and the refrigeration evaporator of the cold storage space after the refrigeration evaporator reaches the defrosting requirement, and the compressor stops running.

[0036] Furthermore, the refrigeration evaporator is disposed within the refrigeration air duct;

[0037] The refrigerated space includes at least one refrigerated compartment and at least one variable temperature compartment;

[0038] The first air damper is located at the air outlet connecting the refrigerated air duct and the refrigerated compartment; the first air damper is used to control the flow rate of cold air to the refrigerated compartment.

[0039] The second air damper is located at the air outlet connecting the refrigerated air duct and the variable temperature chamber; the second air damper is used to independently control the flow rate of cold air to the variable temperature chamber.

[0040] Furthermore, a refrigeration heater is arranged side by side on the side of the refrigeration evaporator;

[0041] A refrigeration heater is arranged side by side below the refrigeration evaporator.

[0042] Furthermore, the refrigeration evaporator and the cold storage evaporator are connected to the same compressor.

[0043] Compared with the prior art, the present invention has at least the following beneficial effects:

[0044] In this invention, the refrigeration evaporator does not defrost independently. Only after the freezing evaporator meets the defrosting requirements will the refrigeration evaporator and the freezing evaporator start defrosting simultaneously. This reduces the number of times the refrigeration evaporator defrosts independently, thereby reducing the number of times large temperature fluctuations occur in the compartments of the refrigeration space and improving the user experience. Attached Figure Description

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects and not to describe a particular order.

[0046] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art 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.

[0047] Figure 1 This is a flowchart of the first type of dual-system defrosting control method proposed in this invention;

[0048] Figure 2 This is a second flowchart of the dual-system defrosting control method proposed in this invention;

[0049] Figure 3 This is the third flowchart of the dual-system defrosting control method proposed in this invention;

[0050] Figure 4 This is a schematic diagram of the interior of the first type of refrigerator proposed in this invention;

[0051] Figure 5 This is a schematic diagram of the interior of the second type of refrigerator proposed in this invention;

[0052] Figure 6 The left view is a partial internal schematic diagram of the refrigeration space proposed in this invention;

[0053] Figure 7 This is a schematic diagram of some modules of the refrigerator proposed in this invention.

[0054] Figure label:

[0055] 10. Refrigeration evaporator;

[0056] 20. Refrigerated evaporator;

[0057] 30. Detection unit; 301. Freezer defrost sensor; 302. Refrigerator defrost sensor; 303. Timing unit; 304. First temperature sensor; 305. Second temperature sensor; 306. Third temperature sensor;

[0058] 40. Main control unit;

[0059] 50. Cold storage room;

[0060] 60. Variable temperature room;

[0061] 70. First air intake;

[0062] 80. Second air damper;

[0063] 90. Refrigeration heater;

[0064] 100. Refrigeration heater;

[0065] 110. Fresh food storage room;

[0066] 120. Freezer compartment;

[0067] 130. Refrigeration fan. Detailed Implementation

[0068] To make the technical problems, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Therefore, a feature pointed out in this specification is used to illustrate one feature of one embodiment of the invention, and does not imply that every embodiment of the invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0069] The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0070] As people's living standards improve, users have higher and higher requirements for food storage, such as precise temperature control and prevention of food odor mixing. These requirements are difficult to meet by traditional single-system refrigerators, so multi-system refrigerators have become very popular in this context.

[0071] Modern multi-system refrigerators typically include a crisper compartment and a variable-temperature compartment (with a minimum temperature above -5°C) within the refrigerator compartment. This causes a decrease in the temperature of the refrigerator evaporator and an increase in frost buildup, resulting in fewer defrost cycles for the freezer evaporator compared to the refrigerator evaporator. Current defrosting methods generally involve the refrigerator evaporator activating its heater to defrost based on accumulated refrigeration time. However, this method prevents the refrigerator compartment from cooling during defrosting, thus failing to maintain its temperature. Simultaneously, the refrigerator compartment also stops cooling during defrosting in the freezer compartment.

[0072] The above methods will lead to an increase in the number of defrosting cycles of the refrigeration evaporator, and the compartments in the refrigeration space will not be able to maintain the temperature during the defrosting process, resulting in more frequent large temperature fluctuations in the compartments and affecting the user experience.

[0073] Therefore, in some embodiments, such as Figure 1 As shown, this invention proposes a dual-system defrosting control method, wherein the dual system includes a refrigeration system and a freezing system, and the defrosting control method includes:

[0074] Determine whether the evaporator 10 in the refrigeration system has met the defrosting requirements;

[0075] If so, the freezer evaporator 10 and the refrigeration evaporator 20 of the refrigeration system will start defrosting synchronously, and the compressor will stop running.

[0076] Understandably, the defrosting frequency of the freezer evaporator 10 is much lower than that of the refrigerator evaporator 20. That is, if the freezer evaporator 10 and the refrigerator evaporator 20 defrost individually, the freezer evaporator 10 will defrost once, while the refrigerator evaporator 20 will defrost at least twice. Furthermore, when the freezer evaporator 10 defrosts, the compressor shuts down, preventing the supply of refrigerant to the refrigerator evaporator 20. Also, if the freezer evaporator 10 has not met the defrosting requirements, the refrigerator evaporator 20 will not begin defrosting. In this embodiment, the dual system also includes a main control unit 40.

[0077] In this way, the refrigeration evaporator 20 in this invention will not defrost alone. Only when the freezing evaporator 10 meets the defrosting requirements will the refrigeration evaporator 20 and the freezing evaporator 10 start defrosting simultaneously. This reduces the number of times the refrigeration evaporator 20 defrosts alone, thereby reducing the number of times large temperature fluctuations occur in the compartments of the refrigeration space and improving the user experience.

[0078] Since the refrigeration evaporator 20 defrosts only along with the freezing evaporator 10, once the freezing evaporator 10 reaches the defrosting requirement, even if the temperature of the corresponding refrigeration space of the refrigeration system does not meet the cooling demand, the refrigeration evaporator 20 will still start defrosting synchronously with the freezing evaporator 10.

[0079] In some embodiments, to prevent the temperature of the refrigeration evaporator 20 from becoming too high and affecting subsequent refrigeration operations, such as... Figure 2 As shown, defrosting is synchronously initiated by the freezer evaporator 10 and the refrigerator evaporator 20. The defrosting control method includes:

[0080] Obtain the first temperature of the refrigerated evaporator 20;

[0081] Independently determine whether the first temperature has reached the first preset temperature;

[0082] If so, the refrigerated evaporator 20 will discontinue defrosting;

[0083] If not, the refrigerated evaporator 20 continues to defrost.

[0084] It is understandable that when the refrigeration evaporator 20 exits defrosting, the freezer evaporator 10 may not exit defrosting at the same time.

[0085] Furthermore, according to the defrosting disengagement of the refrigerated evaporator 20, the defrosting control method includes:

[0086] Obtain the second temperature of the freeze evaporator 10;

[0087] Determine whether the second temperature has reached the second preset temperature;

[0088] If so, the freezer evaporator 10 and the refrigerator evaporator 20 simultaneously exit defrosting;

[0089] If not, only the freezer evaporator 10 continues to defrost.

[0090] Thus, when the first temperature reaches the first preset temperature but the second temperature does not reach the second preset temperature, the frost layer on the freezer evaporator 10 is not completely melted, but the frost layer on the refrigerator evaporator 20 is completely melted. To prevent the temperature of the refrigerator evaporator 20 from continuing to rise, the refrigerator evaporator 20 will be controlled to exit defrosting to avoid affecting the subsequent cooling operation of the refrigerator evaporator 20. At the same time, the freezer evaporator 10 continues to defrost until it meets the condition of "the second temperature reaching the second preset temperature", at which point the main control unit 40 controls the freezer evaporator 10 to exit defrosting.

[0091] In other embodiments, to prevent the temperature of the refrigeration evaporator 10 from becoming too high and affecting subsequent refrigeration operations, such as... Figure 3 As shown, defrosting is synchronously initiated by the freezer evaporator 10 and the refrigerator evaporator 20, and the defrosting control method includes: obtaining the second temperature of the freezer evaporator 10;

[0092] Independently determine whether the second temperature has reached the second preset temperature;

[0093] If so, the freezer evaporator 10 will discontinue defrosting;

[0094] If not, the freezer evaporator 10 continues to defrost.

[0095] It is understandable that when the freezer evaporator 10 exits defrosting, the refrigerator evaporator 20 may not exit defrosting at the same time.

[0096] Further, according to the defrosting exit of the freezer evaporator 10, the defrosting control method includes:

[0097] Obtain the first temperature of the refrigerated evaporator 20;

[0098] Determine whether the first temperature has reached the first preset temperature;

[0099] If so, the refrigerated evaporator 20 will discontinue defrosting;

[0100] If not, only the refrigerated evaporator 20 continues to defrost.

[0101] Thus, when the first temperature has not reached the first preset temperature, but the second temperature has reached the second preset temperature, the frost layer on the freezer evaporator 10 has been completely melted, but the frost layer on the refrigerator evaporator 20 has not been completely melted. In order to prevent the temperature of the freezer evaporator 10 from continuing to rise, the main control unit 40 will control the freezer evaporator 10 to exit defrosting to avoid affecting the subsequent cooling operation of the freezer evaporator 10; at the same time, the refrigerator evaporator 20 continues to defrost until it meets the condition of "the first temperature has reached the first preset temperature", and then the main control unit 40 controls the refrigerator evaporator 20 to exit defrosting.

[0102] In some embodiments, to ensure that the evaporator 10 can safely and orderly switch from "refrigeration operation mode" to "defrost mode", such as Figure 1 As shown, the method for determining whether the evaporator 10 in the refrigeration system has met the defrosting requirements includes:

[0103] The compressor's operating time is monitored and accumulated in real time;

[0104] Determine whether the accumulated running time has reached the preset time;

[0105] If so, the freezer evaporator 10 and the refrigerator evaporator 20 will simultaneously begin defrosting;

[0106] If not, neither the freezer evaporator 10 nor the refrigerator evaporator 20 will activate defrosting and will operate normally.

[0107] For ease of understanding, the complete dual-system defrosting control method proposed in this invention is as follows:

[0108] The compressor's operating time is monitored and accumulated in real time, and it is determined whether the accumulated operating time has reached a preset time.

[0109] If the cumulative running time reaches the preset time, the freezer evaporator 10 and the refrigerator evaporator 20 will start defrosting simultaneously.

[0110] If the accumulated running time does not reach the preset time, neither the freezer evaporator 10 nor the refrigerator evaporator 20 will start defrosting, and both will maintain normal refrigeration operation.

[0111] When the freezer evaporator 10 and the refrigerator evaporator 20 start defrosting simultaneously, the first temperature of the refrigerator evaporator 20 and the second temperature of the freezer evaporator 10 are obtained.

[0112] Independently determine whether the first temperature has reached the first preset temperature and whether the second temperature has reached the second preset temperature;

[0113] If the first temperature reaches the first preset temperature and the second temperature reaches the second preset temperature, both the freezer evaporator 10 and the refrigerator evaporator 20 will stop defrosting.

[0114] If the first temperature reaches the first preset temperature but the second temperature does not reach the second preset temperature, the refrigeration evaporator 20 will stop defrosting and the freezer evaporator 10 will continue to defrost.

[0115] If the first temperature does not reach the first preset temperature, but the second temperature reaches the second preset temperature, the refrigeration evaporator 20 continues to defrost, and the freezer evaporator 10 stops defrosting.

[0116] If the first temperature does not reach the first preset temperature, and the second temperature does not reach the second preset temperature, both the freezer evaporator 10 and the refrigerator evaporator 20 will continue to defrost.

[0117] In some embodiments, such as Figure 7 As shown, the present invention also proposes a refrigerator, including a refrigeration space and a corresponding refrigeration system, a freezing space and a corresponding freezing system; the refrigerator further includes:

[0118] The detection unit 30 is used to detect whether the freezer evaporator 10 of the freezer space has met the defrosting requirements;

[0119] The main control unit 40 is connected to the other detection units 30; the main control unit 40 is used to start defrosting synchronously with the refrigeration evaporator 20 of the refrigeration space after the refrigeration evaporator 10 reaches the defrosting requirement, and the compressor stops running.

[0120] It should be noted that the detection unit 30 includes a defrost sensor 301 for real-time monitoring of the temperature of the freezer evaporator 10, a defrost sensor 302 for real-time monitoring of the temperature of the refrigerator evaporator 20, and a timing unit 303 for accumulating the running time of the compressor or the running time of the refrigerator when it is powered on.

[0121] In this way, the present invention obtains the cumulative running time of the compressor through the timing unit 303, and then the main control unit 40 determines whether the cumulative running time has reached the preset time. If so, it indicates that the refrigeration evaporator 10 has reached the defrosting requirement. The main control unit 40 controls the refrigeration evaporator 10 and the refrigerator evaporator 20 to start defrosting synchronously, thereby reducing the number of times the refrigerator evaporator 20 defrosts alone, thereby reducing the number of times the temperature fluctuates greatly in the compartments of the refrigeration space, and improving the user experience.

[0122] In some embodiments, such as Figure 4 and Figure 5 As shown, the refrigeration evaporator 20 is installed inside the refrigeration air duct;

[0123] The refrigerated space includes at least one refrigerated compartment 50 and at least one variable temperature compartment 60;

[0124] The first damper 70 is located at the air outlet connecting the refrigerated air duct and the refrigerated compartment 50; the first damper 70 is used to control the flow rate of cold air to the refrigerated compartment 50.

[0125] The second damper 80 is located at the air outlet where the refrigerated air duct connects to the variable temperature chamber 60; the second damper 80 is used to control the flow rate of cold air to the variable temperature chamber 60 independently of the first damper 70.

[0126] It should be noted that when there are multiple refrigerated compartments 50, and these compartments 50 are interconnected, a single first air vent 70 can be used to uniformly supply air, ensuring smooth airflow and uniform temperature within these compartments that require similar temperatures (e.g., 0-4°C), thus avoiding temperature differences and cooling dead zones caused by separation. Of course, if any refrigerated compartment 50 is independently set up, then each independently set up refrigerated compartment 50 will have its own corresponding first air vent 70. Furthermore, a fresh-keeping compartment 110 can be set up within the refrigerated space; however, the fresh-keeping compartment 110 may not have an air vent as required, and this is not limited here.

[0127] In this way, when the freezer evaporator 10 reaches the defrosting requirement, the main control unit 40 will close all the air dampers in the refrigeration space to prevent the temperature of the refrigeration evaporator 20 from affecting the temperature of the compartment in the refrigeration space, and then make the freezer evaporator 10 and the refrigeration evaporator 20 start defrosting synchronously.

[0128] If the first temperature of the refrigeration evaporator 20 reaches the first preset temperature, the main control unit 40 controls the refrigeration evaporator 20 to exit defrosting. In the next cooling cycle, the refrigeration evaporator 20 needs to be pre-cooled for a set time in advance. During this process, all air dampers in the refrigeration space must be kept closed.

[0129] Of course, in other embodiments, a refrigeration evaporator 10 is disposed in the refrigeration duct; the refrigeration space includes at least one refrigeration chamber 120; and a third damper is disposed at the air outlet connecting the refrigeration duct and the refrigeration chamber 120, the third damper being used to control the flow rate of cold air to the refrigeration chamber 120.

[0130] Of course, if there are multiple freezer compartments 120 and they are connected, then air can be supplied uniformly through a third air damper; if the multiple freezer compartments 120 are set up independently, then each independently set freezer compartment 120 is set up with a corresponding third air damper.

[0131] In this way, when the freezer evaporator 10 reaches the defrosting requirement, the main control unit 40 will close all the air dampers in the refrigerator and freezer compartments to avoid affecting the compartment temperature in the refrigerator and freezer compartments, and then enable the freezer evaporator 10 and the refrigerator evaporator 20 to start defrosting synchronously.

[0132] The detection unit 30 includes a first temperature sensor 304 for real-time monitoring of the temperature of the refrigeration compartment 50, a second temperature sensor 305 for real-time monitoring of the temperature of the variable temperature compartment 60, and a third temperature sensor 306 for real-time monitoring of the temperature of the freezer compartment 120.

[0133] Thus, when the freezer evaporator 10 and the refrigerator evaporator 20 are not defrosting, the main control unit 40 can independently open or close the corresponding dampers based on the compartment temperature of the refrigerator compartment and the compartment temperature of the freezer compartment. Specifically:

[0134] S1: Determine whether the room temperature detected by the first temperature sensor 304 has reached the third preset temperature;

[0135] If so, if the refrigeration compartment 50 meets the refrigeration requirements, the main control unit 40 will close the first damper 70;

[0136] If not, the refrigeration compartment 50 does not meet the cooling requirements. At this time, the main control unit 40 opens the first air damper 70 until the refrigeration compartment 50 meets the cooling requirements, and then closes the first air damper 70.

[0137] S2: Determine whether the room temperature detected by the second temperature sensor 305 has reached the fourth preset temperature;

[0138] If so, the variable temperature chamber 60 meets the cooling requirements, and the main control unit 40 closes the second damper 80;

[0139] If not, the variable temperature chamber 60 does not meet the cooling requirements. At this time, the main control unit 40 opens the second damper 80 until the variable temperature chamber 60 meets the cooling requirements, and then closes the second damper 80.

[0140] S3: Determine whether the room temperature detected by the third temperature sensor 306 has reached the fifth preset temperature;

[0141] If so, if the freezer compartment 120 meets the cooling requirements, the main control unit 40 will close the third damper;

[0142] If not, the freezer compartment 120 does not meet the cooling requirements. At this time, the main control unit 40 opens the third air damper until the freezer compartment 120 meets the cooling requirements, and then closes the third air damper.

[0143] Furthermore, steps S1, S2, and S3 are not sequential and are performed independently.

[0144] In some embodiments, such as Figure 5 and Figure 6 As shown, a refrigeration heater 90 is arranged side by side on the side of the refrigeration evaporator 20;

[0145] A refrigeration heater 100 is arranged side by side below the refrigeration evaporator 10.

[0146] It should be noted that a drip tray is provided directly below both the freezer evaporator 10 and the refrigerator evaporator 20. Furthermore, starting defrosting in both the freezer evaporator 10 and the refrigerator evaporator 20 is equivalent to activating the corresponding heater, and disabling defrosting is equivalent to deactivating the corresponding heater.

[0147] The refrigerated evaporator 20 and the refrigerated heater 90 are arranged side by side in a horizontal direction, which maximizes the use of the compact air duct space and facilitates modular assembly. At the same time, this layout makes it easier to access and replace during maintenance. The side-by-side heating can provide indirect and relatively gentle heat radiation, which slowly and evenly melts the frost layer and avoids large fluctuations in the temperature of the compartments in the refrigerated space due to sudden and intense heating, thus affecting food preservation.

[0148] The evaporator 10 and the heater 100 are arranged side-by-side vertically. This allows the hot air generated by the heater 100 to flow upwards naturally, evenly enveloping and penetrating the fins and coils of the large evaporator 10 located above it. This bottom-up heating method ensures comprehensive heat coverage and is the most efficient way to melt thick frost. Furthermore, the evaporator 10 produces more water during defrosting. With the heater 100 below and the frost above, the melted water naturally drips downwards under gravity, flowing into the drip tray below before being discharged. This direct and smooth drainage path greatly reduces the risk of ice blockage due to poor drainage.

[0149] Furthermore, the refrigerated evaporator 20 is also equipped with a refrigerated fan 130. When the refrigerated heater 90 is started, the main control unit will start the refrigerated fan 130 simultaneously, thereby further accelerating the melting of frost on the refrigerated evaporator 20.

[0150] The refrigeration evaporator 10 and the refrigerator evaporator 20 are connected to the same compressor.

[0151] This design reduces the hardware cost of the refrigerator, optimizes space utilization, and improves the overall energy efficiency and reliability of the system.

[0152] The defrosting control process for the refrigerator proposed in this invention is as follows:

[0153] The compressor's operating time is monitored and accumulated in real time, and it is determined whether the accumulated operating time has reached a preset time.

[0154] If the accumulated running time reaches the preset time, the main control unit 40 starts the refrigeration heater 90 and the freezer heater 100, and turns off the compressor so that the freezer evaporator 10 and the refrigeration evaporator 20 enter defrosting synchronously, and all dampers are closed.

[0155] If the accumulated running time does not reach the preset time, the main control unit 40 controls the refrigerator heater 90 and the freezer heater 100 to remain off, while the compressor operates normally, so that the freezer evaporator 10 and the refrigerator evaporator 20 maintain normal refrigeration operation.

[0156] After the compressor is turned off, the first temperature of the refrigeration evaporator 20 and the second temperature of the freezing evaporator 10 are obtained;

[0157] Independently determine whether the first temperature has reached the first preset temperature and whether the second temperature has reached the second preset temperature;

[0158] If the first temperature reaches the first preset temperature and the second temperature reaches the second preset temperature, the main control unit 40 shuts down the refrigerator heater 90 and the freezer heater 100 so that both the freezer evaporator 10 and the refrigerator evaporator 20 can stop defrosting.

[0159] If the first temperature reaches the first preset temperature but the second temperature does not reach the second preset temperature, only the refrigerator heater 90 is turned off so that the refrigerator evaporator 20 stops defrosting and the freezer evaporator 10 continues to defrost.

[0160] If the first temperature does not reach the first preset temperature, but the second temperature reaches the second preset temperature, only the freezer heater 100 is turned off so that the refrigeration evaporator 20 continues to defrost and the freezer evaporator 10 stops defrosting.

[0161] If the first temperature does not reach the first preset temperature, and the second temperature does not reach the second preset temperature, both the refrigeration heater 90 and the freezer heater 100 remain running so that both the freezer evaporator 10 and the refrigeration evaporator 20 continue to defrost.

[0162] Furthermore, once the compressor starts and the refrigeration evaporator 10 and the refrigerator evaporator 20 begin to cool, the main control unit 40 selectively opens the corresponding dampers based on the temperature of the corresponding compartment.

[0163] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A dual-system defrosting control method, wherein the dual system includes a refrigeration system and a freezing system, characterized in that, The defrosting control method includes: Determine whether the evaporator in the refrigeration system has met the defrosting requirements; If so, the refrigeration evaporator and the refrigeration evaporator of the refrigeration system will start defrosting synchronously, and the compressor will stop running.

2. The dual-system defrosting control method according to claim 1, characterized in that, The defrosting control method includes the following: Defrosting is initiated synchronously by the freezer evaporator and the refrigerator evaporator. Obtain the first temperature of the refrigerated evaporator; Independently determine whether the first temperature has reached the first preset temperature; If so, the refrigerated evaporator will discontinue defrosting; If not, the refrigerated evaporator continues to defrost.

3. The dual-system defrosting control method according to claim 2, characterized in that, The defrosting control method includes the following based on the defrosting exit of the refrigerated evaporator: Obtain the second temperature of the refrigeration evaporator; Determine whether the second temperature has reached the second preset temperature; If so, the freezer evaporator and the refrigerator evaporator simultaneously exit defrosting; If not, only the refrigerated evaporator continues to defrost.

4. The dual-system defrosting control method according to claim 1, characterized in that, The defrosting control method, which involves synchronously starting defrosting in both the freezer evaporator and the refrigerator evaporator, includes: acquiring a second temperature of the freezer evaporator; Independently determine whether the second temperature has reached the second preset temperature; If so, the freezer evaporator will discontinue defrosting; If not, the freeze evaporator continues to defrost.

5. The dual-system defrosting control method according to claim 4, characterized in that, The defrosting control method includes the following steps: Based on the defrosting exit of the evaporator. Obtain the first temperature of the refrigerated evaporator; Determine whether the first temperature has reached the first preset temperature; If so, the refrigerated evaporator will discontinue defrosting; If not, only the refrigerated evaporator continues to defrost.

6. The dual-system defrosting control method according to claim 1, characterized in that, The defrosting control method for determining whether the evaporator in the refrigeration system has met the defrosting requirements includes: The compressor's operating time is monitored and accumulated in real time; Determine whether the accumulated running time has reached the preset time; If so, the freezer evaporator and the refrigerator evaporator will simultaneously begin defrosting; If not, neither the freezer evaporator nor the refrigerator evaporator will activate defrosting.

7. A refrigerator, comprising a refrigeration space and a corresponding refrigeration system, and a freezer space and a corresponding freezer system; characterized in that, The refrigerator also includes: A detection unit is used to detect whether the evaporator of the freezing space has met the defrosting requirements; The main control unit is connected to the other detection units; the main control unit is used to synchronously start defrosting of the refrigeration evaporator and the refrigeration evaporator of the cold storage space after the refrigeration evaporator reaches the defrosting requirement, and the compressor stops running.

8. The refrigerator according to claim 7, characterized in that, The refrigeration evaporator is installed inside the refrigeration air duct; The refrigerated space includes at least one refrigerated compartment and at least one variable temperature compartment; The first air damper is located at the air outlet connecting the refrigerated air duct and the refrigerated compartment; the first air damper is used to control the flow rate of cold air to the refrigerated compartment. The second air damper is located at the air outlet connecting the refrigerated air duct and the variable temperature chamber; the second air damper is used to independently control the flow rate of cold air to the variable temperature chamber.

9. The refrigerator according to claim 7, characterized in that, A refrigeration heater is arranged side by side on the side of the refrigeration evaporator; A refrigeration heater is arranged side by side below the refrigeration evaporator.

10. The refrigerator according to claim 7, characterized in that, The refrigeration evaporator and the cold storage evaporator are connected to the same compressor.

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