Refrigerator, refrigerator noise reduction method and storage medium

Abstract

The embodiment of the invention belongs to the technical field of household appliances, and provides a refrigerator, a noise reduction method of the refrigerator and a storage medium. The method comprises the steps that when it is determined that a defrosting mode is started, a refrigerant flowing out of a compressor is controlled to flow to an evaporator through an electromagnetic valve, then the compressor is controlled to be started and operates for a first preset duration at a first rotating speed, the compressor is adjusted to operate at a second rotating speed till defrosting is finished, and the second rotating speed is larger than the first rotating speed. According to the invention, the refrigerant with higher pressure in the condenser can be prevented from quickly entering the compressor at the initial stage of reverse-flow defrosting starting, and the impact is reduced, so that the noise is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of household appliances. More specifically, the present application relates to a refrigerator, a noise reduction method for a refrigerator, and a storage medium. Background Art

[0002] When a refrigerator is refrigerating, moisture in the circulating air will frost on the evaporator and the connecting pipeline. Among them, most of the frosting occurs on the evaporator, and the frosting on the evaporator will affect the refrigeration efficiency of the refrigerator.

[0003] Currently, defrosting can be performed by the method of reverse flow of the refrigerant. Specifically, the refrigerant flows reversely in each mechanism of the refrigeration system, and the high-temperature and high-pressure gas flowing out of the compressor enters the evaporator, and the heat from the high-temperature and high-pressure gas is used to defrost the evaporator.

[0004] However, when starting the reverse flow defrosting mode, the noise generated by the start of the compressor is relatively large. How to reduce the noise when starting the reverse flow defrosting is an urgent problem to be solved. Summary of the Invention

[0005] The embodiments of the present application provide a refrigerator, a noise reduction method for a refrigerator, and a storage medium, which can be used to reduce the noise when starting the fluidized defrosting.

[0006] In a first aspect, the embodiments of the present application provide a refrigerator, including:

[0007] A box body;

[0008] A refrigeration system disposed in the box body, including: a compressor, a condenser, and an evaporator. Among them, the compressor is respectively communicated with the condenser and the evaporator, and a solenoid valve is disposed between the compressor and the condenser and the evaporator. The solenoid valve is configured to control the flow direction of the refrigerant flowing out of the compressor to the evaporator when the refrigeration system is in the defrosting mode;

[0009] A control component electrically connected to the solenoid valve, configured to:

[0010] When it is determined that the defrosting mode is turned on, control the flow direction of the refrigerant flowing out of the compressor to the evaporator through the solenoid valve;

[0011] Control the compressor to start and operate at a first speed for a first preset duration;

[0012] Adjust the compressor to operate at a second speed until the defrosting ends, where the second speed is greater than the first speed.

[0013] In this embodiment, the refrigerator includes a refrigeration system and a control component disposed inside the cabinet. The refrigeration system includes a compressor, a condenser, and an evaporator. Among them, the compressor is respectively connected to the condenser and the evaporator. An electromagnetic valve is provided between the compressor and the condenser and the evaporator. The electromagnetic valve is configured to control the flow direction of the refrigerant flowing out of the compressor to the evaporator when the refrigeration system is in the defrosting mode. The control component is configured to, when determining that the defrosting mode is turned on, control the flow direction of the refrigerant flowing out of the compressor to the evaporator through the electromagnetic valve, then control the compressor to start and operate at a first rotation speed for a first preset duration, and adjust the compressor to operate at a second rotation speed until the defrosting ends, where the second rotation speed is greater than the first rotation speed. It is possible to avoid the refrigerant with a higher pressure in the condenser from quickly entering the compressor at the initial stage of reverse-flow defrosting, reduce the impact, and thus achieve noise reduction.

[0014] In some embodiments of the present application, a check valve and a first capillary tube are arranged in parallel between the electromagnetic valve and the condenser. The refrigerant flowing out of the compressor enters the condenser through the check valve and the first capillary tube. The flow rate of the first capillary tube is greater than a preset flow rate, and the preset flow rate is the flow rate at which the first capillary tube does not produce a throttling effect.

[0015] In this embodiment, by providing a check valve and a capillary tube with a larger flow rate, at the instant of starting reverse defrosting, the capillary tube can prevent a large amount of liquid refrigerant in the condenser from flowing to the compressor, further reducing the impact on the compressor and further achieving noise reduction.

[0016] In some embodiments of the present application, a second capillary tube is arranged between the condenser and the evaporator, and the flow rate of the second capillary tube is less than the flow rate of the first capillary tube.

[0017] In this embodiment, by providing the second capillary tube, it can play a role in throttling and reducing pressure.

[0018] In some embodiments of the present application, the electromagnetic valve includes an exhaust port, an intake port, a first outlet, and a second outlet;

[0019] Among them, the intake port is connected to the outlet of the compressor, and the exhaust port is connected to the inlet of the compressor; the first outlet is connected to the condenser through the check valve and the first capillary tube, and the second outlet is connected to the evaporator;

[0020] The control component is configured to:

[0021] When determining that the refrigeration mode is turned on, control the electromagnetic valve to open the first outlet and close the second outlet. The refrigerant flowing out of the compressor enters the check valve and the first capillary tube through the exhaust port and the first outlet;

[0022] When it is determined to turn on the defrost mode, control the solenoid valve to open the second outlet and close the first outlet, and the refrigerant flowing out of the compressor enters the evaporator through the exhaust port and the second outlet.

[0023] In this embodiment, the reverse flow control of the refrigerant is realized through the solenoid valve to realize reverse flow defrosting.

[0024] In some embodiments of the present application, the control component is configured to:

[0025] After controlling the refrigerant flowing out of the compressor to flow to the evaporator for a second preset duration through the solenoid valve, control the compressor to start.

[0026] In this embodiment, before starting the compressor, the refrigerant flowing out of the compressor can be controlled to flow to the evaporator for a period of time, and then the compressor is started, which can balance the pressure inside the compressor and the condenser.

[0027] In some embodiments of the present application, the flow rate of the first capillary tube is 20 L / min, and the flow rate of the second capillary tube is 6 L / min.

[0028] In this embodiment, through the setting of the flow rate, during the normal reverse flow defrosting process, the first capillary tube does not produce an obstructive throttling effect on the refrigerant flowing inside the entire refrigeration system.

[0029] In some embodiments of the present application, a freezer compartment is provided inside the cabinet, and the evaporator is configured to provide cold for the freezer compartment.

[0030] In some embodiments of the present application, a refrigerator compartment is further provided inside the cabinet, and the refrigeration system further includes a refrigerating evaporator, and the refrigerating evaporator is arranged between the evaporator and the condenser;

[0031] When the refrigeration system is in the defrost mode, the refrigerant flowing out of the evaporator flows through the refrigerating evaporator to the condenser.

[0032] In this embodiment, during defrosting, the refrigerant flowing out of the evaporator of the freezer compartment can flow through the evaporator of the refrigerator compartment to the condenser. Since the temperature of the refrigerant decreases at this time, the refrigerator compartment can be refrigerated, increasing the utilization of cold.

[0033] In a second aspect, the present application provides a noise reduction method for a refrigerator, and the refrigerator includes:

[0034] Cabinet;

[0035] A refrigeration system disposed within the cabinet, comprising: a compressor, a condenser, and an evaporator, wherein the compressor is respectively connected to the condenser and the evaporator, and a solenoid valve is disposed between the compressor and the condenser and the evaporator, and the solenoid valve is configured to control the flow direction of the refrigerant flowing out of the compressor to the evaporator when the refrigeration system is in the defrosting mode;

[0036] The method includes:

[0037] When it is determined that the defrosting mode is turned on, control the flow direction of the refrigerant flowing out of the compressor to the evaporator through the solenoid valve;

[0038] Control the compressor to turn on and operate at a first speed for a first preset duration;

[0039] Adjust the compressor to operate at a second speed until the defrosting ends, wherein the second speed is greater than the first speed.

[0040] In this embodiment, when it is determined that the defrosting mode is turned on, the flow direction of the refrigerant flowing out of the compressor is controlled to the evaporator through the solenoid valve, then the compressor is controlled to turn on and operate at a first speed for a first preset duration, and the compressor is adjusted to operate at a second speed until the defrosting ends, wherein the second speed is greater than the first speed. It is possible to avoid the refrigerant with a higher pressure in the condenser from quickly entering the compressor at the initial stage of reverse-flow defrosting, reduce the impact, and thus achieve noise reduction.

[0041] In a third aspect, the present application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a computer, they are used to implement the method as described in the second aspect.

[0042] The computer-readable storage medium provided by the embodiments of the present application can execute the technical solutions in the above method embodiments, and the beneficial effects are similar, and will not be described in detail here.

[0043] In a fourth aspect, the present application provides a computer program product, including a computer program, and when the computer program is executed by a computer, it is used to implement the method as described in the second aspect.

[0044] The computer program product provided by the embodiments of the present application can execute the technical solutions in the above method embodiments, and the beneficial effects are similar, and will not be described in detail here. Description of the Drawings

[0045] To more clearly illustrate the embodiments of the present application or the implementation manners in the related art, the following will briefly introduce the drawings required for use in the description of the embodiments or the related art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0046] Figure 1 Schematic diagram of a refrigerator provided by an embodiment of the present application;

[0047] Figure 2 Schematic structural diagram of a refrigerator provided by an embodiment of the present application;

[0048] Figure 3 Schematic structural diagram of a refrigeration system 103 provided by an embodiment of the present application;

[0049] Figure 4 Schematic structural diagram of a refrigeration system 103 provided by an embodiment of the present application;

[0050] Figure 5 Schematic diagram of the flow direction of the refrigerant when the refrigeration system 103 of the present application example is in the refrigeration mode;

[0051] Figure 6 Schematic diagram of the flow direction of the refrigerant when the refrigeration system 103 of the present application example is in the defrosting mode;

[0052] Figure 7 Schematic structural diagram of another refrigeration system 103 provided by an embodiment of the present application;

[0053] Figure 8 Schematic structural diagram of yet another refrigeration system 103 provided by an embodiment of the present application;

[0054] Figure 9 Schematic flow chart of a noise reduction method for a refrigerator provided by an embodiment of the present application;

[0055] Figure 10 Schematic flow chart of another noise reduction method for a refrigerator provided by an embodiment of the present application;

[0056] Figure 11 Schematic flow chart of yet another noise reduction method for a refrigerator provided by an embodiment of the present application.

[0057] Explanation of reference numerals:

[0058] 10 - Refrigerator; 11 - Freezer compartment;

[0059] 101 - Cabinet; 102 - Door body;

[0060] 103 - Refrigeration system; 104 - Control component;

[0061] 31 - Compressor; 32 - Condenser;

[0062] 33 - Evaporator; 34 - Solenoid valve;

[0063] 35 - Check valve; 36 - Refrigerated evaporator. Detailed implementation manners

[0064] To make the objectives, implementation manners and advantages of this application clearer, the following will clearly and completely describe the exemplary implementation manners of this application in combination with the accompanying drawings in the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only a part rather than all of the embodiments of this application.

[0065] It should be noted that the brief description of the terms in this application is only for the convenience of understanding the subsequent described implementation manners, rather than intending to limit the implementation manners of this application. Unless otherwise specified, these terms should be understood in their ordinary and common meanings.

[0066] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not be exclusive of inclusion. For example, a product or device including a series of components does not necessarily have to be limited to those clearly listed components, but may include other components not clearly listed or inherent to these products or devices.

[0067] During the refrigeration process of a refrigerator, since the moisture in the circulating air will frost on the evaporator and the connected pipelines, and in the related art, only during the defrosting process can the frost layer on the evaporator be melted to achieve defrosting. Exemplarily, for example, a defrost heating wire is provided at the bottom of the evaporator to achieve defrosting the evaporator through the defrost heater when the defrost is started. However, this method has problems such as an increase in the energy consumption of the refrigerator.

[0068] Furthermore, a reverse - flow defrosting method has emerged for defrosting, that is, the refrigerant flows reversely in each mechanism of the refrigeration system. The high - temperature and high - pressure gas flowing out from the compressor enters the evaporator, and the heat from the high - temperature and high - pressure gas is utilized to achieve defrosting of the evaporator.

[0069] However, when starting the reverse - flow defrost mode, since the condenser in the refrigeration system is switched to an evaporator, the refrigerant stored at a relatively high pressure in the original condenser will enter the compressor instantaneously in a short time, which has a certain impact on the compressor, causing abnormal vibration and abnormal noise of the compressor, and making the noise of the compressor startup relatively large. How to reduce the noise when starting the reverse - flow defrost is an urgent problem to be solved.

[0070] Therefore, the present application provides a refrigerator. When reverse defrosting is started, the compressor is first controlled to operate at a lower speed for a period of time, and then the speed of the compressor is increased. This can prevent the refrigerant at a relatively high pressure in the condenser from quickly entering the compressor at the initial stage of reverse defrosting, reduce the impact, and thus achieve noise reduction.

[0071] The technical solutions of the present application will be described in detail below in conjunction with specific embodiments. These specific embodiments may be combined with each other or exist independently. For the same or similar concepts or processes, they may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the drawings.

[0072] First, the specific structure of a refrigerator provided by an embodiment of the present application will be described. Exemplarily, Figure 1 is a schematic diagram of a refrigerator provided by an embodiment of the present application. As Figure 1 shown, the refrigerator 10 includes a box body 101, a door body 102, and a storage compartment provided in the box body 101.

[0073] In a possible implementation manner, as Figure 1 shown, the storage compartment includes a refrigerating compartment and a freezing compartment 11, Figure 1 and the refrigerating compartment is not shown in

[0074] It can be understood that Figure 1 is only a schematic diagram of a refrigerator applicable to the present application, and it may also be a refrigerator with other structures. The present application places no restrictions thereon.

[0075] In a possible implementation manner, the refrigerator 10 further includes a refrigeration system 103 and a control component 104. Exemplarily, Figure 2 is a schematic structural diagram of a refrigerator provided by an embodiment of the present application. As Figure 2 shown, the refrigeration system 103 includes a compressor 31, a condenser 32, and an evaporator 33.

[0076] Among them, the compressor 31 is configured to provide power for the refrigeration of the refrigerator 10.

[0077] The condenser 32 is configured to dissipate heat from the refrigerant coming from the compressor 31.

[0078] The evaporator 33 is configured to provide cooling capacity for the freezing compartment.

[0079] Among them, the compressor 31 is respectively connected to the condenser 32 and the evaporator 33. A solenoid valve 34 is provided between the compressor 31 and the condenser 32 and the evaporator 33. The solenoid valve 34 is configured to control the flow direction of the refrigerant flowing out of the compressor 31 to the evaporator 33 when the refrigeration system 103 is in the defrosting mode.

[0080] The control component 104 is electrically connected to the solenoid valve. The control component 104 is configured to:

[0081] When it is determined to turn on the defrost mode, the control component controls, via the solenoid valve 34, the refrigerant flowing out of the compressor 31 to flow to the evaporator 33, then controls the compressor 31 to turn on and operate at a first speed. After the compressor operates at the first speed for a first preset duration, the control component adjusts the compressor 31 to operate at a second speed until the defrost ends, where the second speed is greater than the first speed.

[0082] Exemplarily, the first speed can be 2100 rpm / min (revolutions per minute), and the second speed can be 3900 rpm / min. The first preset duration can be 10 minutes.

[0083] Exemplarily, the control component 104 can determine whether to start the refrigeration mode according to the temperature of the storage compartment of the refrigerator and / or the ambient temperature of the environment where the refrigerator 10 is located, so as to realize refrigerating the storage compartment. The present application does not limit the determination method for the control component 104 to start the refrigeration mode.

[0084] Exemplarily, the control component 104 can determine whether to enter the defrost mode according to factors such as the running time of the evaporator 33, the frost thickness on the evaporator 33, or the specific running conditions of the refrigerator, etc. The present application does not limit this.

[0085] In this embodiment, when the control component 104 determines to turn on the defrost mode, it controls, via the solenoid valve 34, the refrigerant flowing out of the compressor 31 to flow to the evaporator 33, then controls the compressor 31 to turn on and operate at a first speed. After the compressor 31 operates at the first speed for a first preset duration, the control component controls the compressor 31 to operate at a second speed until the defrost ends, where the second speed is greater than the first speed. This can avoid the refrigerant with a relatively high pressure in the condenser 32 from quickly entering the compressor 31 at the initial stage of the reverse-flow defrost, reduce the impact, and thus realize noise reduction.

[0086] In a possible implementation manner, Figure 3 is a schematic structural diagram of a refrigeration system 103 provided by an embodiment of the present application. As Figure 3 shown, a check valve 35 and a first capillary tube are arranged in parallel between the solenoid valve 34 and the condenser 32. The refrigerant flowing out of the compressor 31 enters the condenser 32 through the check valve 35 and the first capillary tube. The flow rate of the first capillary tube is greater than a preset flow rate, and the preset flow rate is the flow rate without throttling effect.

[0087] Exemplarily, the preset flow rate can be 20 L / min (liters per minute). At this preset flow rate, the first capillary tube will not produce a throttling effect.

[0088] Specifically, when the refrigeration system 103 is in the refrigeration mode, the refrigerant flowing out of the compressor 31 passes through the check valve 35 and the first capillary tube and enters the condenser 32.

[0089] When the refrigeration system 103 is in the defrosting mode, due to the one-way conduction of the check valve 35, the refrigerant flowing out of the condenser 32 can only enter the compressor 31 through the first capillary tube. The flow rate of the first capillary tube is large, so it will not impede the evaporated gaseous refrigerant. Only when it is determined to start the defrosting mode, at the moment of switching the solenoid valve 34, the inside of the condenser 32 is liquid refrigerant. At this time, the first capillary tube can play a role in hindering the flow of the liquid refrigerant, enabling a large amount of liquid refrigerant inside the condenser 32 to slowly flow back to the compressor 31, preventing a large amount of liquid refrigerant from instantaneously entering the compressor 31 and causing an impact on the compressor 31, generating a large noise.

[0090] In this embodiment, by setting the check valve and the first capillary tube with a large flow rate, at the moment of starting reverse defrosting, the first capillary tube can hinder a large amount of liquid refrigerant in the condenser 32 from flowing towards the compressor 31, further reducing the impact on the compressor 31 and further achieving noise reduction.

[0091] In a possible implementation manner, a second capillary tube is provided between the condenser 32 and the evaporator 33, which can throttle and depressurize the refrigerant entering the evaporator 33.

[0092] For the above-mentioned second capillary tube, reference can be made to Figure 3 .

[0093] In a possible implementation manner, Figure 4 is a schematic structural diagram of a refrigeration system 103 provided by an embodiment of the present application. As Figure 4 shown, the solenoid valve 34 includes an exhaust port, an intake port, a first outlet, and a second outlet. Among them, the first outlet is communicated with the condenser 32, the second outlet is communicated with the evaporator 33, the exhaust port of the solenoid valve 34 is connected to the inlet of the compressor 31, and the intake port of the solenoid valve 34 is connected to the outlet of the compressor 31.

[0094] The control component 104 is configured to:

[0095] When it is determined to start the refrigeration mode, control the solenoid valve 34 to open the first outlet and close the second outlet. The refrigerant flowing out of the compressor 31 enters the condenser 32 through the exhaust port and the first outlet, then flows through the condenser 32 to the evaporator 33, and finally flows to the compressor 31 to complete the refrigeration cycle of the refrigerator. It should be understood that closing the second outlet means closing the outlet from the compressor 31 to the evaporator 33. The refrigerant flowing out of the evaporator 33 can enter the intake port through the second outlet and thus enter the compressor 31.

[0096] When it is determined to turn on the defrost mode, the control solenoid valve 34 is controlled to open the second outlet and close the first outlet. The refrigerant flowing out of the compressor 31 enters the evaporator 33 through the exhaust port and the second outlet, then flows from the evaporator 33 to the condenser 32, and finally flows to the compressor 31. Among them, the evaporator 33 releases heat to melt the frost layer on the evaporator 33, achieving the purpose of defrosting. It should be understood that closing the first outlet means closing the outlet through which the compressor 31 flows to the condenser 32. The refrigerant flowing out of the condenser 32 can enter the intake port through the first outlet and then enter the compressor 31.

[0097] Exemplarily, Figure 5 FIG. is a schematic diagram of the flow direction of the refrigerant in the refrigeration system 103 according to an example of the present application in the refrigeration mode, as Figure 5 shown, the low-temperature and low-pressure refrigerant is sucked into the compressor 31, compressed into a high-temperature and high-pressure refrigerant in the cylinder of the compressor 31, and then enters the condenser 32 through the solenoid valve 34. The high-temperature and high-pressure refrigerant gas dissipates heat through the condenser 32, and the temperature continuously drops, gradually being cooled into a normal-temperature and high-pressure saturated vapor, and then throttled and depressurized through the second capillary tube to become a normal-temperature and low-pressure wet vapor. Subsequently, it starts to absorb heat and vaporize in the evaporator 33, not only reducing the temperature of the evaporator 33 and its surroundings, but also turning the refrigerant into a low-temperature and low-pressure gas, and then passing through the compressor 31 again to complete the refrigeration cycle of the refrigerator.

[0098] Exemplarily, Figure 6 FIG. is a schematic diagram of the flow direction of the refrigerant in the refrigeration system 103 according to an example of the present application in the defrost mode, as Figure 6 shown, the low-temperature and low-pressure refrigerant is sucked into the compressor 31, compressed into a high-temperature and high-pressure refrigerant in the cylinder of the compressor 31, and then discharged to the evaporator 33 to defrost the evaporator 33, then enters the condenser 32 along the second capillary tube to evaporate, and then returns to the compressor 31 along the first capillary tube. Among them, the high-temperature and high-pressure refrigerant can melt the frost condensed on the evaporator 33 by means of heat conduction in the evaporator 33 to achieve the purpose of defrosting.

[0099] In a possible implementation manner, the refrigeration system 103 further includes a refrigerating evaporator 36.

[0100] Exemplarily, Figure 7 FIG. is a schematic structural diagram of another refrigeration system 103 provided by an embodiment of the present application, as Figure 7 shown, the refrigerating evaporator 36 is arranged between the evaporator 33 and the condenser 32. When the refrigeration system 103 is in the defrost mode, the refrigerant flowing out of the evaporator 33 flows through the refrigerating evaporator 36 to the condenser 32.

[0101] Exemplarily, Figure 8The structural schematic diagram of another refrigeration system 103 provided by the embodiment of the present application is shown as follows. When the refrigeration system 103 is in the refrigeration mode, the refrigerant flowing out of the condenser 32 flows to the evaporator 33 and the refrigerated evaporator 36 respectively. The refrigerant flowing out of the refrigerated evaporator 36 can flow to the evaporator 33 and then return to the compressor 31 to realize the refrigeration cycle. Figure 8 As shown, when the refrigeration system 103 is in the refrigeration mode, the refrigerant flowing out of the condenser 32 flows to the evaporator 33 and the refrigerated evaporator 36 respectively. The refrigerant flowing out of the refrigerated evaporator 36 can flow to the evaporator 33 and then return to the compressor 31 to realize the refrigeration cycle.

[0102] Based on the above refrigerator, Figure 9 The flowchart of a noise reduction method for a refrigerator provided by the embodiment of the present application is shown as follows. This method can be executed by the above control component 104. As Figure 9 shown, this method may include the following steps.

[0103] S901. When it is determined that the defrost mode is turned on, control the refrigerant flowing out of the compressor to flow to the evaporator through the solenoid valve.

[0104] S902. Control the compressor to start and operate at the first speed for the first preset duration.

[0105] S903. Adjust the compressor to operate at the second speed until the defrosting ends.

[0106] Wherein, the second speed is greater than the first speed.

[0107] For the specific implementation manners of the above steps, reference can be made to the above embodiments and will not be elaborated here.

[0108] In this embodiment, when it is determined that the defrost mode is turned on, control the refrigerant flowing out of the compressor to flow to the evaporator through the solenoid valve, then control the compressor to start and operate at the first speed. After the compressor operates at the first speed for the first preset duration, control the compressor to operate at the second speed until the defrosting ends, wherein the second speed is greater than the first speed. This can avoid the high-pressure refrigerant in the condenser from quickly entering the compressor at the initial stage of reverse-flow defrosting, reduce the impact, and thus achieve noise reduction.

[0109] Figure 10 The flowchart of another noise reduction method for a refrigerator provided by the embodiment of the present application is shown as follows. This method can be executed by the control component 104. As Figure 10 shown, this method may include the following steps.

[0110] S1001. When it is determined that the defrost mode is turned on, control the refrigerant flowing out of the compressor to flow to the evaporator through the solenoid valve.

[0111] S1002. After controlling the refrigerant flowing out of the compressor to flow to the evaporator through the solenoid valve for the second preset duration, control the compressor to start and operate at the first speed for the first preset duration.

[0112] S1003. Adjust the compressor to operate at the second speed until the defrosting ends.

[0113] In this embodiment, when it is determined to turn on the defrosting mode, after controlling the refrigerant flowing out of the compressor to flow to the evaporator for a second preset duration through the solenoid valve, then control the compressor to start and operate at the first speed for a first preset duration, and adjust the compressor to operate at the second speed until the defrosting ends. This can balance the pressure inside the compressor and the condenser, avoid the refrigerant with a relatively high pressure in the condenser from quickly entering the compressor at the initial stage of reverse-flow defrosting, reduce the impact, and thus achieve noise reduction.

[0114] Figure 11 It is a schematic flowchart of another noise reduction method for a refrigerator provided by an embodiment of the present application. This method can be executed by the control component 104, as Figure 11 shown. This method can include the following steps.

[0115] S1101. When it is determined to turn on the refrigeration mode, control the solenoid valve to open the first outlet and close the second outlet.

[0116] S1102. When it is determined to turn on the defrosting mode, control the solenoid valve to open the second outlet and close the first outlet.

[0117] It can be understood that there is no sequence between S1101 and S1102.

[0118] In this embodiment, the reverse flow control of the refrigerant is realized through this solenoid valve to achieve reverse-flow defrosting.

[0119] The present application also provides a computer-readable storage medium. The computer-readable storage medium may include various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs, etc. Specifically, computer-executable instructions are stored in the computer-readable storage medium. When the computer-executable instructions are executed by a computer, they are used to implement the technical solutions shown in the above method embodiments.

[0120] The present application also provides a program product. The program product includes executable instructions. The executable instructions are stored in a readable storage medium. When the computer program is executed by a computer, the technical solutions shown in the above method embodiments are executed. The specific implementation manners and technical effects are similar and will not be elaborated here.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0122] For the sake of convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. According to the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are for the purpose of better explaining the principles and actual applications, so that those skilled in the art can better use the embodiments and various different modified embodiments suitable for specific use considerations.

[0123] In the present application, "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article indicates that the associated objects before and after are in an "or" relationship.

[0124] The descriptions such as "first", "second", etc. that appear in the embodiments of the present application are only for the purpose of schematic illustration and distinguishing the described objects, without order, and do not represent a special limitation on the number of devices in the embodiments of the present application, and cannot constitute any limitation to the embodiments of the present application. For example, the first threshold and the second threshold are only for distinguishing different thresholds, rather than indicating differences in the magnitudes, priorities, or importance levels of these two thresholds.

[0125] In the present application, terms such as "exemplary", "in some embodiments", "in other embodiments", etc. are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of the term "exemplary" is intended to present concepts in a specific manner.

[0126] In the present application, "of", "corresponding", "corresponding", "associated" can sometimes be used interchangeably. It should be noted that when their differences are not emphasized, the meanings they express are the same.

[0127] In this application, "equal to" can be used in combination with "less than" or "greater than", but not simultaneously with both "less than" and "greater than". When "equal to" is used in combination with "less than", the technical solution adopted for "less than" applies. When "equal to" is used in combination with "greater than", the technical solution adopted for "greater than" applies.

Claims

1. A refrigerator, characterized in that, the refrigerator comprises: a cabinet; a refrigeration system disposed in the cabinet, including: a compressor, a condenser and an evaporator, wherein the compressor is respectively communicated with the condenser and the evaporator, and a solenoid valve is disposed between the compressor and the condenser and the evaporator, and the solenoid valve is configured to control the refrigerant flowing out of the compressor to flow to the evaporator when the refrigeration system is in the defrost mode; a control component electrically connected to the solenoid valve, configured to: when it is determined that the defrost mode is turned on, control the refrigerant flowing out of the compressor to flow to the evaporator through the solenoid valve; control the compressor to turn on and operate at a first speed for a first preset duration; adjust the compressor to operate at a second speed until the defrosting ends, wherein the second speed is greater than the first speed.

2. The refrigerator according to claim 1, characterized in that, a check valve and a first capillary tube are arranged in parallel between the solenoid valve and the condenser, and the refrigerant flowing out of the compressor enters the condenser through the check valve and the first capillary tube, and the flow rate of the first capillary tube is greater than a preset flow rate, and the preset flow rate is the flow rate when the first capillary tube does not generate a throttling effect.

3. The refrigerator according to claim 2, characterized in that, a second capillary tube is arranged between the condenser and the evaporator, and the flow rate of the second capillary tube is less than the flow rate of the first capillary tube.

4. The refrigerator according to claim 2, characterized in that, the solenoid valve includes an exhaust port, an intake port, a first outlet and a second outlet; wherein, the intake port is communicated with the outlet of the compressor, and the exhaust port is communicated with the inlet of the compressor; the first outlet is communicated with the condenser through the check valve and the first capillary tube, and the second outlet is communicated with the evaporator; the control component is configured to: when it is determined that the refrigeration mode is turned on, control the solenoid valve to open the first outlet and close the second outlet, and the refrigerant flowing out of the compressor enters the check valve and the first capillary tube through the exhaust port and the first outlet; when it is determined that the defrost mode is turned on, control the solenoid valve to open the second outlet and close the first outlet, and the refrigerant flowing out of the compressor enters the evaporator through the exhaust port and the second outlet.

5. The refrigerator according to claim 1, characterized in that, the control component is configured to: after controlling the refrigerant flowing out of the compressor to flow to the evaporator through the solenoid valve for a second preset duration, control the compressor to turn on.

6. The refrigerator according to claim 3, characterized in that, the flow rate of the first capillary tube is 20 L / min, and the flow rate of the second capillary tube is 6 L / min.

7. The refrigerator according to claim 1, characterized in that, a freezer is arranged in the cabinet, and the evaporator is configured to provide cold for the freezer.

8. The refrigerator according to claim 7, characterized in that, A refrigerating chamber is further arranged in the box body, and the refrigeration system further includes a refrigerating evaporator which is arranged between the evaporator and the condenser; When the refrigeration system is in the defrosting mode, the refrigerant flowing out of the evaporator flows through the refrigerating evaporator and then flows to the condenser.

9. A noise reduction method for a refrigerator, characterized in that, the refrigerator includes: a box body; a refrigeration system arranged in the box body, including a compressor, a condenser and an evaporator, wherein the compressor is respectively communicated with the condenser and the evaporator, and a solenoid valve is arranged between the compressor and the condenser and the evaporator, and the solenoid valve is configured to control the refrigerant flowing out of the compressor to flow to the evaporator when the refrigeration system is in the defrosting mode; the method includes: when it is determined that the defrosting mode is turned on, controlling the refrigerant flowing out of the compressor to flow to the evaporator through the solenoid valve; controlling the compressor to be turned on and operating at a first speed for a first preset duration; adjusting the compressor to operate at a second speed until the defrosting ends, wherein the second speed is greater than the first speed.

10. A computer-readable storage medium, characterized in that, computer-executable instructions are stored on the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, the method according to claim 9 is implemented.

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