refrigerator

Abstract

This invention provides a refrigerator, including a cabinet, a refrigeration system, and a controller. The cabinet defines a first storage compartment and a second storage compartment. The refrigeration system is used to cool the first and second storage compartments. The controller is capable of performing the following steps: in response to the refrigerator completing defrosting, controlling the refrigeration system to cool the first storage compartment; after a first preset time, determining whether a first temperature rise rate of the first storage compartment is not greater than 0; if the first temperature rise rate is not greater than 0, controlling the refrigeration system to cool the second storage compartment; after a second preset time, determining whether a second temperature rise rate of the second storage compartment is not greater than 0; if the second temperature rise rate is not greater than 0, controlling the refrigeration system to cool the first storage compartment; repeating the above steps until the first and second storage compartments drop to their respective preset temperatures. This invention overcomes the problem in existing refrigerators where the storage effect of food in the later-cooled storage compartment is affected.

Description

Technical Field

[0001] This invention belongs to the field of refrigerator technology, and specifically provides a refrigerator. Background Technology

[0002] For frost-free refrigerators, frost will form on the evaporator during use. This frost on the evaporator surface affects heat exchange between the evaporator and the surrounding air, thus impacting the refrigerator's cooling efficiency. Therefore, it is necessary to heat and defrost the evaporator.

[0003] During the evaporator defrosting process, because it doesn't cool, the refrigerator's storage compartment doesn't receive sufficient cooling and its temperature rises. Even the heat generated by the evaporator during heating can be transferred to the storage compartment, further increasing its temperature. Therefore, after the evaporator defrosts, the refrigerator's storage compartment needs to be cooled quickly.

[0004] To rapidly lower the temperature of the storage compartments, existing refrigerators typically cool the compartments with the most significant temperature rise first, and then cool the other compartments one by one once the preset temperature is reached. This not only affects the freezing and storage efficiency of food in the later-cooled compartments (such as the freezer compartment), but also increases the refrigerator's energy consumption. Summary of the Invention

[0005] One objective of this invention is to solve the problem that existing refrigerators, when cooling after defrosting, easily affect the storage effect of food in the subsequent cooling compartment.

[0006] To achieve the above objectives, the present invention provides a refrigerator, including a cabinet, a refrigeration system, and a controller; the cabinet defines a first storage compartment and a second storage compartment; the refrigeration system is used to refrigerate the first storage compartment and the second storage compartment; the controller is configured to perform the following steps:

[0007] In response to the refrigerator completing defrosting, the refrigeration system is controlled to cool the first storage compartment;

[0008] After the first preset time period, determine whether the first temperature rise rate of the first storage room is less than or equal to 0;

[0009] If the first temperature rise rate is less than or equal to 0, control the refrigeration system to refrigerate the second storage compartment;

[0010] After the second preset time period, determine whether the second temperature rise rate of the second storage room is less than or equal to 0;

[0011] If the second temperature rise rate is less than or equal to 0, control the refrigeration system to refrigerate the first storage compartment;

[0012] Repeat the above steps until the first storage room and the second storage room have dropped to their respective preset temperatures.

[0013] Optionally, the controller is further configured to perform the following steps:

[0014] If the first temperature rise rate is greater than 0, the refrigeration system is controlled to continue cooling the first storage compartment; and / or...

[0015] If the second temperature rise rate is greater than 0, the refrigeration system is controlled to continue refrigerating the second storage compartment.

[0016] Optionally, the refrigeration system includes a compressor, a condenser, a first control valve, a first pressure-reducing component, and a first evaporator connected in sequence; the refrigeration system further includes a second pressure-reducing component, a second evaporator, and a second control valve connected in series between the first control valve and the first evaporator, with one outlet of the second control valve also fluidly connected to the inlet of the compressor; the refrigeration system further includes a third control valve connected in series between the outlet of the first evaporator and the inlet of the compressor, with one outlet of the third control valve also fluidly connected to the inlet of the second evaporator.

[0017] Optionally, controlling the refrigeration system to refrigerate the first storage compartment includes:

[0018] Control the first control valve to connect the condenser to the first pressure-reducing component;

[0019] The second control valve connects the outlet of the second evaporator to the inlet of the compressor, and disconnects the outlet of the second evaporator from the inlet of the first evaporator.

[0020] The third control valve connects the outlet of the first evaporator to the inlet of the compressor, and disconnects the outlet of the first evaporator from the inlet of the second evaporator.

[0021] Optionally, controlling the refrigeration system to refrigerate the first storage compartment includes:

[0022] Control the first control valve to connect the condenser to the first pressure-reducing component;

[0023] The second control valve connects the outlet of the second evaporator to the inlet of the compressor, and disconnects the outlet of the second evaporator from the inlet of the first evaporator.

[0024] The third control valve is controlled to prevent the outlet of the first evaporator from connecting with the inlet of the compressor, and to connect the outlet of the first evaporator with the inlet of the second evaporator.

[0025] Optionally, controlling the refrigeration system to refrigerate the second storage compartment includes:

[0026] The first control valve is used to connect the condenser to the second pressure-reducing component;

[0027] The second control valve connects the outlet of the second evaporator to the inlet of the compressor, and disconnects the outlet of the second evaporator from the inlet of the first evaporator.

[0028] The third control valve is controlled to prevent the outlet of the first evaporator from connecting with the inlet of the compressor, and to connect the outlet of the first evaporator with the inlet of the second evaporator.

[0029] Optionally, controlling the refrigeration system to refrigerate the second storage compartment includes:

[0030] The first control valve is used to connect the condenser to the second pressure-reducing component;

[0031] Control the second control valve to prevent the outlet of the second evaporator from being connected to the inlet of the compressor, and connect the outlet of the second evaporator to the inlet of the first evaporator;

[0032] The third control valve connects the outlet of the first evaporator to the inlet of the compressor, and disconnects the outlet of the first evaporator from the inlet of the second evaporator.

[0033] Optionally, both the first pressure-reducing component and the second pressure-reducing component are capillary tubes; and / or, the first control valve, the second control valve, and the third control valve are all three-way directional valves.

[0034] Optionally, the first control valve, the second control valve, and the third control valve are all two-position three-way directional valves.

[0035] Optionally, the first storage room is a freezer room, and the second storage room is a refrigerator room; and / or, the values ​​of the first preset duration and the second preset duration are both within the range of 1 minute to 3 minutes.

[0036] Based on the foregoing description, those skilled in the art will understand that in the aforementioned technical solution of this invention, after the refrigerator defrosts, the refrigeration system is controlled to cool the first storage compartment. After a first preset time, a first temperature rise rate of the first storage compartment is determined. If the first temperature rise rate is less than or equal to 0, the refrigeration system is controlled to cool the second storage compartment. After a second preset time, a second temperature rise rate of the second storage compartment is determined. If the second temperature rise rate is less than or equal to 0, the refrigeration system is controlled to cool the first storage compartment. The above steps are repeated until the first and second storage compartments are reduced to their respective preset temperatures. Therefore, this invention, by having the refrigeration system alternately cool the first and second storage compartments, enables both the first and second storage compartments to be rapidly cooled, overcoming the problem in existing refrigerators where the storage effect of food in the later-cooling storage compartment is affected.

[0037] Furthermore, during the cooling process of the refrigeration system in the first storage compartment, the condenser is connected to the first pressure-reducing component by controlling the first control valve; the outlet of the second evaporator is connected to the inlet of the compressor by controlling the second control valve, while the outlet of the second evaporator is not connected to the inlet of the first evaporator; the outlet of the first evaporator is not connected to the inlet of the compressor by controlling the third control valve, while the outlet of the first evaporator is connected to the inlet of the second evaporator. This allows the refrigerant to flow through the first evaporator first and then through the second evaporator, thus allowing the refrigerant's cooling capacity to be released for the first time at the first evaporator, cooling the first storage compartment; then, the remaining cooling capacity is released a second time at the second evaporator, cooling the second storage compartment. Therefore, this invention can simultaneously cool the first storage compartment and utilize the residual cooling capacity of the refrigerant to cool the second storage compartment, thereby reducing the temperature rise rate of the second storage compartment.

[0038] Other beneficial effects of the present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand the improved objectives, features and advantages of the present invention. Attached Figure Description

[0039] To more clearly illustrate the technical solution of the present invention, some embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that the same reference numerals may indicate the same or similar parts or components in different drawings; the drawings of the present invention are not necessarily drawn to scale.

[0040] In the attached image:

[0041] Figure 1 This is a partial schematic diagram of the refrigerator in this invention;

[0042] Figure 2 This is a cross-sectional schematic diagram of the refrigerator body in this invention;

[0043] Figure 3 This is a flowchart of the main steps of the refrigerator control method in some embodiments of the present invention;

[0044] Figure 4 This is a cross-sectional schematic diagram of a refrigerator in some embodiments of the present invention;

[0045] Figure 5 These are schematic diagrams of the refrigeration system in some embodiments of the present invention;

[0046] Figure 6 yes Figure 5 A schematic diagram of refrigerant flow in the central refrigeration system under the first refrigeration mode;

[0047] Figure 7 yes Figure 5 A schematic diagram of refrigerant flow in the intermediate refrigeration system under the second refrigeration mode;

[0048] Figure 8 yes Figure 5 A schematic diagram of refrigerant flow in the third refrigeration mode of the refrigeration system;

[0049] Figure 9 yes Figure 5 A schematic diagram of refrigerant flow in the central refrigeration system under the fourth refrigeration mode. Detailed Implementation

[0050] Those skilled in the art should understand that the embodiments described below are merely a part of the embodiments of the present invention, and not all of the embodiments of the present invention. These partial embodiments are intended to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those skilled in the art without creative effort should still fall within the scope of protection of the present invention.

[0051] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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; and they can also refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] Furthermore, it should be noted that in the description of this invention, the terms "coldness" and "heat" are two descriptions of the same physical state. That is, the higher the "coldness" of a target object (e.g., evaporator, air, condenser, etc.), the lower its "heat," and vice versa. A target object absorbs "coldness" while releasing "heat," and releases "coldness" while absorbing "heat." A target object retains "coldness" or "heat" to maintain its current temperature. "Refrigeration" and "heat absorption" are two descriptions of the same physical phenomenon; that is, a target object (e.g., an evaporator) absorbs heat while refrigerating.

[0054] like Figure 1 As shown, in this invention, the refrigerator 100 includes a cabinet 110, a refrigeration system 120 and a controller 130, wherein the refrigeration system 120 is used to refrigerate the refrigerator 100, and the controller 130 is used to control the operation of the refrigeration system 120.

[0055] like Figure 2 As shown, in this invention, the housing 110 defines a first storage chamber 111, a second storage chamber 112, and a compressor chamber 113. The first storage chamber 111 and the second storage chamber 112 are used to store food ingredients, and the compressor chamber 113 is used to house components such as a compressor, a condenser, and a condenser fan.

[0056] It should be noted that, in this invention, the first storage compartment 111 and the second storage compartment 112 are intended to represent two different types of storage compartments (e.g., a freezer compartment, a refrigerator compartment, and a variable temperature compartment). Furthermore, the number of each of the first storage compartment 111 and the second storage compartment 112 is not limited to one; for example, there can be two, three, four, etc.

[0057] In some embodiments of the present invention, the first storage compartment 111 is a freezer compartment and the second storage compartment 112 is a refrigerator compartment.

[0058] like Figure 3 As shown, in some embodiments of the present invention, the controller 130 is able to control the refrigerator 100 to perform the following steps:

[0059] In step S101, in response to the defrosting of the refrigerator 100, the refrigeration system 200 is controlled to refrigerate the first storage compartment 111.

[0060] Step S102: After the first preset time, determine whether the first temperature rise rate of the first storage chamber 111 is less than or equal to 0.

[0061] The first preset duration ranges from 1 minute to 3 minutes. Preferably, the first preset duration is 1 minute, so that the refrigeration system 200 can cool the second storage compartment 112 in a timely manner.

[0062] Furthermore, the first temperature rise rate can be obtained in any feasible manner. For example, when the refrigeration system 200 cools the first storage compartment 111 for a first preset duration, the temperature of the first storage compartment 111 is continuously acquired twice at intervals of several seconds (e.g., 1S, 2S, 5S, 10S, etc.). Then, the difference between the latter temperature value and the former temperature value is calculated, and this difference is the first temperature rise rate. It is then determined whether this difference is less than or equal to 0.

[0063] If the first temperature rise rate is less than or equal to 0, then proceed to step S104; if the first temperature rise rate is greater than 0, then proceed to step S103.

[0064] Step S103: If the first temperature rise rate is greater than 0, control the refrigeration system 200 to continue refrigerating the first storage room 111.

[0065] Step S104: If the first temperature rise rate is less than or equal to 0, control the refrigeration system 200 to refrigerate the second storage compartment 112.

[0066] Step S105: After the second preset time, determine whether the second temperature rise rate of the second storage chamber 112 is less than or equal to 0.

[0067] The second preset duration ranges from 1 minute to 3 minutes. Preferably, the second preset duration is 1 minute, so that the refrigeration system 200 can cool the first storage compartment 111 again in a timely manner.

[0068] Furthermore, the method for obtaining the second temperature rise rate can be the same as the method for obtaining the first temperature rise rate, so it will not be elaborated here.

[0069] If the second temperature rise rate is less than or equal to 0, then proceed to step S107; if the second temperature rise rate is greater than 0, then proceed to step S106.

[0070] Step S106: If the second temperature rise rate is greater than 0, control the refrigeration system 200 to continue refrigerating the second storage compartment 112.

[0071] Step S107: If the second temperature rise rate is less than or equal to 0, control the refrigeration system 200 to refrigerate the first storage chamber 111.

[0072] Step S108: Repeat steps S102 to S107 until the first storage room 111 and the second storage room 112 are reduced to their respective preset temperatures.

[0073] Among them, the first storage compartment 111 and the second storage compartment 112 are reduced to their respective preset temperatures, which are stable temperatures for storing the food in each storage compartment. These values ​​are pre-stored on the refrigerator 100 when it leaves the factory.

[0074] The following reference Figure 4 and Figure 5 The following will provide a detailed description of the refrigeration system 120 of the refrigerator 100 in some embodiments of the present invention.

[0075] like Figure 4 and Figure 5 As shown, the refrigeration system 120 includes a compressor 121, a condenser 122, a first control valve 1231, a second control valve 1232, a third control valve 1233, a first pressure-reducing component 1241, a second pressure-reducing component 1242, a first evaporator 1251, and a second evaporator 1252. The compressor 121 and condenser 122 are arranged within a compressor compartment 113. The first evaporator 1251 is used to refrigerate the first storage compartment 111, and the second evaporator 1252 is used to refrigerate the second storage compartment 112.

[0076] like Figure 4 As shown, each of the condenser 122, the first evaporator 1251, and the second evaporator 1252 is equipped with a fan to drive airflow.

[0077] like Figure 5 As shown, the compressor 121, condenser 122, first control valve 1231, first pressure reducing component 1241 and first evaporator 1251 are connected end to end in sequence so that the refrigerant circulates along the following path: compressor 121 → condenser 122 → first control valve 1231 → first pressure reducing component 1241 → first evaporator 1251 → compressor 121.

[0078] Continue reading Figure 5The second pressure-reducing component 1242, the first evaporator 1251, and the second control valve 1232 are connected in series between the first control valve 1231 and the first evaporator 1251, and one outlet of the second control valve 1232 is also fluidly connected to the inlet of the compressor 121, so that the refrigerant circulates along the following path: compressor 121 → condenser 122 → first control valve 1231 → second pressure-reducing component 1242 → second evaporator 1252 → second control valve 1232 → first evaporator 1251 → compressor 121, compressor 121 → condenser 122 → first control valve 1231 → second pressure-reducing component 1242 → second evaporator 1252 → second control valve 1232 → compressor 121.

[0079] Continue reading Figure 5 The third control valve 1233 is connected in series between the outlet of the second evaporator 1252 and the inlet of the compressor 121, and one outlet of the third control valve 1233 is also fluidly connected to the inlet of the first evaporator 1251, so that the refrigerant can circulate along the following path: compressor 121 → condenser 122 → first control valve 1231 → first pressure reducing member 1241 → first evaporator 1251 → third control valve 1233 → second evaporator 1252 → second control valve 1232 → compressor 121.

[0080] Preferably, in some embodiments of the present invention, the first control valve 1231, the second control valve 1232, and the third control valve 1233 are all three-way directional valves, and the first pressure reducing component 1241 and the second pressure reducing component 1242 are both capillary tubes.

[0081] More preferably, the first control valve 1231, the second control valve 1232, and the third control valve 1233 are all two-position three-way directional valves with one inlet and two outlets.

[0082] Furthermore, in other embodiments of the present invention, those skilled in the art may, as needed, configure the first pressure-reducing component 1241 and / or the second pressure-reducing component 1242 as any other feasible component, such as an electronic expansion valve.

[0083] In some embodiments of the present invention, if the refrigerator 100 performs step S101 (i.e., prioritizes cooling the first storage compartment 111), the refrigeration system 120 can operate in a first refrigeration mode (e.g., ...). Figure 6 (as shown) and second cooling mode (as shown) Figure 7 (As shown) it operates. In some embodiments of the present invention, if the refrigerator 100 performs step S104 (i.e., preferentially cooling the second storage compartment 112), the refrigeration system 120 can operate in a third refrigeration mode (e.g., as shown). Figure 8 (as shown) and the fourth cooling mode (as shown) Figure 9 Run as shown.

[0084] like Figure 6 As shown, when the refrigeration system 120 is operating in the first refrigeration mode, the first control valve 1231 connects the condenser 122 to the first pressure-reducing component 1241 and disconnects the condenser 122 from the second pressure-reducing component 1242. The second control valve 1232 connects the outlet of the second evaporator 1252 to the inlet of the compressor 121 and disconnects the outlet of the second evaporator 1252 from the inlet of the first evaporator 1251. The third control valve 1233 connects the outlet of the first evaporator 1251 to the inlet of the compressor 121 and disconnects the outlet of the first evaporator 1251 from the inlet of the second evaporator 1252. At this time, the refrigerant in the refrigeration system 120 flows along the following path: compressor 121 → condenser 122 → first control valve 1231 → first pressure-reducing component 1241 → first evaporator 1251 → third control valve 1233 → compressor 121.

[0085] Those skilled in the art will understand that in the first refrigeration mode, since the refrigerant only flows through the first evaporator 1251 and not through the second evaporator 1252, the first evaporator 1251 has a high refrigeration efficiency and can quickly cool the first storage compartment 111.

[0086] like Figure 7 As shown, when the refrigeration system 120 operates in the second refrigeration mode, the first control valve 1231 connects the condenser 122 to the first pressure-reducing component 1241 and disconnects the condenser 122 from the second pressure-reducing component 1242. The second control valve 1232 connects the outlet of the second evaporator 1252 to the inlet of the compressor 121 and disconnects the outlet of the second evaporator 1252 from the inlet of the first evaporator 1251. The third control valve 1233 disconnects the outlet of the first evaporator 1251 from the inlet of the compressor 121 and connects the outlet of the first evaporator 1251 to the inlet of the second evaporator 1252. At this time, the refrigerant in the refrigeration system 120 flows along the following path: compressor 121 → condenser 122 → first control valve 1231 → first pressure-reducing component 1241 → first evaporator 1251 → third control valve 1233 → second evaporator 1252 → second control valve 1232 → compressor 121.

[0087] Those skilled in the art will understand that in the second refrigeration mode, since the refrigerant first flows through the first evaporator 1251 and then through the second evaporator 1252, the second evaporator 1252 can use the residual cold of the refrigerant to refrigerate the second storage compartment 112, thereby improving the refrigeration efficiency of the refrigerator 100.

[0088] like Figure 8As shown, when the refrigeration system 120 operates in the third refrigeration mode, the first control valve 1231 disconnects the condenser 122 from the first pressure-reducing component 1241 and connects the condenser 122 to the second pressure-reducing component 1242. The second control valve 1232 connects the outlet of the second evaporator 1252 to the inlet of the compressor 121 and disconnects the outlet of the second evaporator 1252 from the inlet of the first evaporator 1251. The third control valve 1233 disconnects the outlet of the first evaporator 1251 from the inlet of the compressor 121 and connects the outlet of the first evaporator 1251 to the inlet of the second evaporator 1252. At this time, the refrigerant in the refrigeration system 120 flows along the following path: compressor 121 → condenser 122 → first control valve 1231 → second pressure-reducing component 1242 → second evaporator 1252 → second control valve 1232 → compressor 121.

[0089] Those skilled in the art will understand that in the third refrigeration mode, since the refrigerant only flows through the second evaporator 1252 and not through the first evaporator 1251, the second evaporator 1252 has a higher refrigeration efficiency and can quickly cool the second storage compartment 112.

[0090] like Figure 9 As shown, when the refrigeration system 120 operates in the fourth refrigeration mode, the first control valve 1231 disconnects the condenser 122 from the first pressure-reducing component 1241 and connects the condenser 122 to the second pressure-reducing component 1242. The second control valve 1232 disconnects the outlet of the second evaporator 1252 from the inlet of the compressor 121 and connects the outlet of the second evaporator 1252 to the inlet of the first evaporator 1251. The third control valve 1233 connects the outlet of the first evaporator 1251 to the inlet of the compressor 121 and disconnects the outlet of the first evaporator 1251 from the inlet of the second evaporator 1252. At this time, the refrigerant in the refrigeration system 120 flows along the following path: compressor 121 → condenser 122 → first control valve 1231 → second pressure-reducing component 1242 → second evaporator 1252 → second control valve 1232 → first evaporator 1251 → third control valve 1233 → compressor 121.

[0091] Those skilled in the art will understand that in the fourth refrigeration mode, since the refrigerant first flows through the second evaporator 1252 and then through the first evaporator 1251, the first evaporator 1251 can use the residual cold of the refrigerant to refrigerate the first storage compartment 111, thereby improving the refrigeration efficiency of the refrigerator 100.

[0092] Furthermore, in other embodiments of the present invention, the controller 130 may also be configured to: when the refrigeration system 120 is running in the second refrigeration mode, if the temperature of the refrigerant in the second evaporator 1252 is detected to be greater than the temperature in the second storage compartment 112, then control the refrigeration system 120 to run in the first refrigeration mode to avoid a temperature rise in the second storage compartment 112.

[0093] Furthermore, in other embodiments of the present invention, the controller 130 may also be configured to: when the refrigeration system 120 is running in the fourth refrigeration mode, if the temperature of the refrigerant in the first evaporator 1251 is detected to be greater than the temperature in the first storage compartment 111, then control the refrigeration system 120 to run in the third refrigeration mode to avoid a temperature rise in the first storage compartment 111.

[0094] The technical solutions of the present invention have been described in conjunction with several embodiments above. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Without departing from the technical principles of the present invention, those skilled in the art can disassemble and combine the technical solutions in the above embodiments, and can also make equivalent changes or substitutions to related technical features. Any changes, equivalent substitutions, improvements, etc., made within the technical concept and / or technical principles of the present invention will fall within the scope of protection of the present invention.

Claims

1. A refrigerator comprising a cabinet, a refrigeration system and a controller; the cabinet defines a first storage compartment and a second storage compartment; The refrigeration system is used for refrigerating the first storage compartment and the second storage compartment, and comprises, in sequence and end to end, a compressor, a condenser, a first control valve, a first pressure reduction member and a first evaporator, further comprises a second pressure reduction member, a second evaporator and a second control valve connected in series between the first control valve and the first evaporator and connected in parallel with the first pressure reduction member, and comprises a third control valve connected in series between an outlet of the first evaporator and an inlet of the compressor, wherein, an outlet of the second control valve is further in fluid connection with an inlet of the compressor, and an outlet of the third control valve is further in fluid connection with an inlet of the second evaporator; the controller is configured to perform the following steps: in response to completion of defrosting of the refrigerator, controlling the refrigeration system to refrigerate the first storage compartment, and comprising the steps of: controlling the first control valve to communicate the condenser with the first pressure reducing member; controlling the second control valve to communicate an outlet of the second evaporator with the inlet of the compressor, and to not communicate the outlet of the second evaporator with the inlet of the first evaporator; and controlling the third control valve to not communicate the outlet of the first evaporator with the inlet of the compressor, and to communicate the outlet of the first evaporator with the inlet of the second evaporator; after a first preset time period, determining whether a first temperature rise rate of the first storage compartment is less than or equal to 0; if the first temperature rise rate is less than or equal to 0, controlling the refrigeration system to refrigerate the second storage compartment; after a second preset time period, determining whether a second temperature rise rate of the second storage compartment is less than or equal to 0; if the second temperature rise rate is less than or equal to 0, controlling the refrigeration system to refrigerate the first storage compartment; repeating the above steps until the first storage compartment and the second storage compartment are lowered to respective preset temperatures. 2.The refrigerator according to claim 1, wherein the controller is further configured to perform the following steps: if the first temperature rise rate is greater than 0, controlling the refrigeration system to continue to refrigerate the first storage compartment; and / or if the second temperature rise rate is greater than 0, controlling the refrigeration system to continue to refrigerate the second storage compartment. 3.The refrigerator according to claim 1, wherein the controlling the refrigeration system to refrigerate the first storage compartment comprises: controlling the first control valve to communicate the condenser with the first pressure reducing member; controlling the second control valve to communicate the outlet of the second evaporator with the inlet of the compressor, and to not communicate the outlet of the second evaporator with the inlet of the first evaporator; and controlling the third control valve to communicate the outlet of the first evaporator with the inlet of the compressor, and to not communicate the outlet of the first evaporator with the inlet of the second evaporator. 4.The refrigerator according to claim 1, wherein the controlling the refrigeration system to refrigerate the second storage compartment comprises: controlling the first control valve to communicate the condenser with the second pressure reducing member; controlling the second control valve to communicate the outlet of the second evaporator with the inlet of the compressor, and to not communicate the outlet of the second evaporator with the inlet of the first evaporator; and controlling the third control valve to not communicate the outlet of the first evaporator with the inlet of the compressor, and to communicate the outlet of the first evaporator with the inlet of the second evaporator.

5. The refrigerator of claim 1, wherein the controlling the refrigeration system to refrigerate the second storage compartment comprises: controlling the first control valve to communicate the condenser with the second pressure reduction member; controlling the second control valve to not communicate the outlet of the second evaporator with the inlet of the compressor and to communicate the outlet of the second evaporator with the inlet of the first evaporator; controlling the third control valve to communicate the outlet of the first evaporator with the inlet of the compressor and to not communicate the outlet of the first evaporator with the inlet of the second evaporator.

6. The refrigerator of any one of claims 1 to 5, wherein the first pressure reduction member and the second pressure reduction member are both capillary tubes.

7. The refrigerator of any one of claims 1 to 5, wherein the first control valve, the second control valve and the third control valve are all three-way directional control valves.

8. The refrigerator of claim 7, wherein the first control valve, the second control valve and the third control valve are all two-position three-way directional control valves.

9. The refrigerator of any one of claims 1 to 5, wherein the first storage compartment is a freezer compartment and the second storage compartment is a refrigerator compartment.

10. The refrigerator of any one of claims 1 to 5, wherein the first preset time length and the second preset time length are both in a range of 1 min to 3 min.

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