Refrigerator and control method of refrigerator

Abstract

The application discloses a refrigerator and a control method of the refrigerator. The refrigerator comprises a shell, a cover plate, a drawer and a fan. The shell is provided with a cavity. The cover plate is arranged in the cavity. The drawer is arranged in the cavity in a push-pull manner. The drawer is provided with a storage cavity with an open upper end. The cover plate is used for covering the opening when the drawer is installed in the cavity. The storage cavity and the cavity are communicated through an air flow channel. The fan is arranged on the drawer or the cover plate and used for discharging dry air in the cavity into the drawer or discharging humid air in the drawer. Thus, dry and wet hierarchical storage can be realized.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment, and in particular to a refrigerator and a method for controlling the refrigerator. Background Technology

[0002] Due to space constraints, existing refrigerators typically divide the freezer and refrigerator compartments into multiple drawers to maximize internal space. Each drawer has a lid that closes or even seals the drawer. Items in different drawers are stored independently to prevent odor mixing. However, different foods and items have different humidity requirements. For example, fruits and vegetables require high humidity, while dry goods require low humidity. Therefore, establishing different humidity zones within the refrigerator's internal storage space is a pressing issue that needs to be addressed. Summary of the Invention

[0003] The main objective of this invention is to propose a refrigerator that addresses the problem of humidity classification in the internal storage space of existing refrigerators.

[0004] To achieve the above objectives, the present invention provides a refrigerator, comprising:

[0005] The shell has a cavity;

[0006] A cover plate is disposed within the cavity;

[0007] A drawer is provided in the cavity in a push-pull configuration. The drawer has a storage cavity with an open top. The cover is used to cover the open top when the drawer is installed in the cavity. The storage cavity and the cavity are connected by an airflow channel.

[0008] A fan, located on the drawer or the cover, is used to discharge dry air from the cavity into the drawer or to extract humid air from the drawer.

[0009] In one embodiment, the airflow channel includes a gap formed between the cover and the upper end of the drawer.

[0010] In one embodiment, the airflow channel includes ventilation holes disposed on the cover or the drawer.

[0011] In one embodiment, the fan is disposed at the ventilation opening.

[0012] In one embodiment, the cover plate is recessed downward to form a receiving cavity, the ventilation hole is disposed on the receiving cavity, and the motor is disposed in the receiving cavity and corresponds to the ventilation hole.

[0013] In one embodiment, the drawer has a handle on its side, and the ventilation hole is located on the cover plate and near the handle.

[0014] The present invention also proposes a control method for a refrigerator, applied to the aforementioned refrigerator, comprising the following steps:

[0015] Obtain the drawer's open / closed status information;

[0016] Obtain humidity status information of the refrigerator cavity;

[0017] When the drawer is closed and the refrigerator cavity is in a low humidity state, control the fan to start to regulate the humidity inside the drawer.

[0018] In one embodiment, after the step of controlling the fan to start to regulate the humidity inside the drawer, the method further includes:

[0019] The fan will stop running after the first preset time.

[0020] In one embodiment, after the step of stopping the control fan after a first preset time, the method further includes:

[0021] Obtain the opening and closing status information of the drawer and the humidity status information of the refrigerator cavity within a second preset time period;

[0022] If the drawer is closed and the refrigerator cavity is in a low-humidity state for the second preset time period, the fan is controlled to start running for a fourth preset time period and then stop.

[0023] In one embodiment, after the step of obtaining the humidity status information of the refrigerator cavity, the method further includes:

[0024] When the refrigerator door is closed, the refrigerator condenser is controlled to run for a third preset time to keep the refrigerator cavity in a low humidity state.

[0025] In one embodiment, after the step of stopping the control fan after a first preset time, the method further includes:

[0026] After the fan stops running, control the refrigerator to defrost internally.

[0027] In one embodiment, after the step of controlling the refrigerator to defrost internally after the fan stops operating, the method further includes:

[0028] Control the refrigerator's internal dehumidification to keep the refrigerator cavity in a low-humidity state.

[0029] This invention features a drawer housed within a cavity inside the casing. A cover and a fan are positioned above the drawer, creating an airflow channel between the drawer and the cavity. The fan can either expel dry air from the cavity into the drawer or extract humid air from the drawer. When the drawer stores dry goods or requires a low-humidity environment, the fan dehumidifies the drawer. When a high-humidity environment is required, the cover and drawer are sealed to prevent the entry of dry external air. Furthermore, storing fruits and vegetables increases carbon dioxide concentration and humidity due to respiration, further enhancing preservation. This allows for differentiated storage based on dry and wet conditions. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, 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 the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a refrigerator according to an embodiment of the present invention;

[0032] Figure 2 for Figure 1 A schematic diagram of the drawer and lid in the embodiment;

[0033] Figure 3 for Figure 2 A partial cross-sectional view of the drawer in the open state in the embodiment;

[0034] Figure 4 for Figure 2 A partial cross-sectional view of the drawer in the closed state in the embodiment;

[0035] Figure 5 for Figure 2 A schematic diagram of the connector in the drawer-open state in the embodiment;

[0036] Figure 6 for Figure 1 A schematic diagram of the connector in the example with the drawer closed;

[0037] Figure 7 for Figure 1 A schematic diagram of the connector structure in the embodiment;

[0038] Figure 8 This is a flowchart of an embodiment of the refrigerator control method of the present invention;

[0039] Figure 9This is a flowchart of another embodiment of the refrigerator control method of the present invention.

[0040] Explanation of icon numbers:

[0041]

[0042]

[0043] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0045] It should be noted that if the embodiments of the present invention involve directional indicators, such as up, down, left, right, front, back, etc., then the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture, as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0046] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0047] This invention proposes a refrigerator, with reference to Figures 1 to 7The refrigerator includes a shell, a cover plate 20, a drawer 11, and a fan 30. The shell has a cavity 10; the cover plate 20 is disposed within the cavity 10; the drawer 11 is slidably disposed within the cavity 10, and the drawer 11 has a storage cavity with an open top. The cover plate 20 is used to cover the open top when the drawer 11 is installed into the cavity 10; the storage cavity and the cavity are connected by an airflow channel; the fan 30 is disposed on the drawer 11 or the cover plate 20, and is used to exhaust dry air from the cavity 10 into the drawer 11, or to extract humid air from the drawer 11.

[0048] In this embodiment, a refrigerator door is provided with an opening on one side of the housing, forming a cavity 10 inside the housing. The mounting member 60 is a partition fixedly installed within the cavity 10, dividing the cavity 10 into multiple storage areas. A guide rail 13 is provided on the inner wall of the cavity 10, and rollers 12 adapted to the guide rail 13 are provided on the left and right sides of the drawer 11, allowing the drawer 11 to be pushed and pulled inside the cavity 10. The connecting member 40 is hinged to the mounting members 60 at the upper and lower ends and the cover plate 20 respectively, forming a four-bar linkage. The four-bar linkage is a parallelogram mechanism. The cover plate 20 can swing up and down together with the connecting member 40. During the swinging process, the angle between the cover plate 20 and the mounting member 60 remains constant, and the plane containing the upper opening edge of the drawer 11 remains parallel to the cover plate 20. Alternatively, the two connectors 40 can be set to different lengths. The connector 40 located near the inside of the cavity 10 or away from the door is the first connector 40, and the connector 40 located near the handle of the drawer 11 is the second connector 40. When the drawer 11 is pulled out, the cover plate 20 can be moved up and avoid the drawer 11. The specific lengths of the two connectors 40 can be calculated and are not further limited here.

[0049] Regarding the elastic connection between the connector 40 and the mounting piece 60, a spring connection can be used. One end of the spring is attached to the mounting piece 60, and the other end is attached to the connector 40. The tension of the spring provides the elastic force to overcome the weight of the connector 40 and the cover plate 20 and pull them upwards. Alternatively, a torsion spring can be installed at the hinge point between the connector 40 and the mounting piece 60. The two ends of the torsion spring are connected to the mounting piece 60 and the connector 40 respectively, and the torsion force of the torsion spring drives the connector 40 to swing upwards.

[0050] In this embodiment, the end of the cover plate 20 away from the door extends downwards. When the drawer 11 is pushed into the cavity 10, the side of the drawer 11 away from the door abuts against the downwardly extending part of the cover plate 20, which can push the cover plate 20 to swing downwards. The swinging process can be decomposed into movement into the cavity 10 and vertical downward movement. When the drawer 11 is fully pushed into the cavity 10, the upper cover plate 20 just covers the opening of the drawer 11. At this time, the static friction force of the drawer 11 is greater than or equal to the component force of the elastic element 50 relative to the static friction force. When the drawer 11 is pulled out, the external pulling force and the component force of the elastic element 50 are greater than the above-mentioned static friction force, so the cover plate 20 automatically swings upwards and separates from the drawer 11. During the above movement, the elastic element 50 can provide a driving force to swing the push rod upwards, and the drawer 11 and the cover plate 20 will not scrape each other, while also ensuring the sealing of the cover plate 20 and the drawer 11.

[0051] Alternatively, a single vent can be provided on the cover plate 20, with the fan 30 positioned at the vent. When the fan 30 is running, air flows through this vent. Alternatively, the airflow channel includes a gap formed between the cover plate 20 and the opening of the drawer 11. Air flows through the vent and the gap between the cover plate 20 and the drawer 11. Another vent can also be provided on the cover plate 20 or the drawer 11, with a damper positioned at this vent. When the fan 30 rotates, air flows between the two vents, forming an airflow channel.

[0052] This invention features a drawer 11 within a cavity 10 inside the housing, with a cover 20 and a fan 30 positioned above the drawer 11. The drawer 11 and the cavity 10 form an airflow channel, allowing the fan 30 to either expel dry air from the cavity 10 into the drawer 11 or extract humid air from the drawer 11. When the drawer 11 stores dry goods or requires a low-humidity environment, the fan 30 dehumidifies the interior. When a high-humidity environment is required, the cover 20 is sealed to prevent the entry of dry external air. Furthermore, storing fruits and vegetables increases carbon dioxide concentration and humidity due to respiration, further enhancing preservation. This allows for differentiated storage based on moisture content.

[0053] In one embodiment, reference is made to Figures 1 to 7Ventilation holes can be provided on the cover plate 20, and a fan 30 can be installed at the ventilation holes to extract air from the drawer 11 or to expel air from the cavity 10 into the drawer 11. Specifically, the cover plate 20 can be recessed downwards in a region near the door to form a cavity, in which the ventilation holes and fan 30 are located to avoid interference with the mounting component 60 above. Furthermore, since the lower surface of the cover plate 20 protrudes, the cover plate 20 is tilted inwards to prevent interference with the protruding part when the drawer 11 is pulled out horizontally.

[0054] In one embodiment, reference is made to Figures 1 to 7 The fan 30 can be installed inside the drawer 11. When the fan 30 rotates, it can increase the air pressure inside the drawer 11 and discharge the humid air through the ventilation hole or the gap between the drawer 11 and the cover plate 20.

[0055] In one embodiment, reference is made to Figures 1 to 7 The drawer has a handle on its side, and the ventilation hole is located on the cover plate near the handle. In this embodiment, since the top of the drawer 11 is in contact with the cover plate 20, when the drawer is pulled out, the ventilation hole and the receiving cavity are located near the handle, which can give some clearance to the inner wall deep inside the drawer, and the downwardly protruding receiving cavity will not interfere with the drawer being pulled out.

[0056] In one embodiment, reference is made to Figures 1 to 7 The elastic element 50 includes a spring. When the drawer 11 is fully pushed into the cavity 10, the angle between the line connecting the hinge centers of the upper and lower ends of the connector 40 and the center line of the spring is in the range of -15° to 15°. In this embodiment, the angle is preferably kept at 0°. At this time, the spring tension cannot be decomposed into a component force that drives the connector 40 to swing. Although the spring is in a stretched state, the elastic force is along the line connecting the hinge points. Additional tension is required to drive the connector 40 to rotate. When the angle is between -15° and 15°, although the spring tension can be decomposed into a component force perpendicular to the line connecting the hinge points, the corresponding component force is also small because the angle is very small. The static friction between the drawer 11 and the shell and the lid is greater than or equal to the above component force, and the spring will not pop the drawer 11 out, thereby achieving self-locking of the drawer 11. When drawer 11 is pulled out, the static friction between it and cover plate 20 causes cover plate 20 to swing outward. When it swings to the desired angle, the spring force overcomes the weight of cover plate 20 and connector 40, lifting cover plate 20 and connector 40 to the area above drawer 11.

[0057] In one embodiment, reference is made to Figures 1 to 7The cover plate 20 is provided with a first abutting part 14, and the drawer 11 is provided with a second abutting part 22. When the drawer 11 is pushed into the cavity 10, the second abutting part 22 abuts against the drawer 11, thereby pushing the cover plate 20 to swing downward. In this embodiment, by providing the first abutting part 14 and the second abutting part 22, the linkage between the drawer 11 and the cover plate 20 can be realized, while simultaneously preventing the upper opening of the drawer 11 from scratching the lower surface of the cover plate 20. Specifically, the first abutting part 14 and the second abutting part 22 can be provided on the rear side of the drawer 11 and the cover plate 20 or on the left and right sides to realize the linkage between the cover plate 20 and the drawer 11. The downward swing of the cover plate 20 is powered by the drawer 11, while also overcoming the tension of the spring. The upward swing of the cover plate 20 requires external force to overcome the static friction between the drawer 11 and external components in the initial stage of the movement, after which the tension of the spring can drive the cover plate 20 to swing upward.

[0058] In one embodiment, reference is made to Figures 1 to 7 The refrigerator also includes an elastic element 50. The upper end of the elastic element 50 is connected to the mounting member 60, and the lower end of the elastic element 50 is connected to the connecting member 40, for pulling the connecting member 40 to swing upward. The connecting member 40 is provided with an upward-facing groove 43, and a connecting part 44 is provided in the groove 43. The elastic element 50 is located in the groove 43 and connected to the connecting part 44. In this embodiment, the elastic element 50 is preferably a tension spring. The lower end of the connecting member 40 is provided with a first hinge shaft 41, the upper end is provided with a groove 43, and second hinge shafts 42 are provided on both sides of the groove 43. Thus, the upper end of the connecting member 40 forms a fork-shaped structure, and the two second hinge shafts 42 are respectively located on both sides of the groove 43 and are coaxially arranged. The spring is arranged between the two second hinge shafts 42 to achieve balanced force. The first hinge shaft 41 is located at the lower end of the connecting member 40 away from the groove 43 and is arranged on the same side as one of the hinge shafts. By setting the groove 43, the tension spring can be installed in the groove 43 and is in a semi-closed state, which can play a certain protective role for the tension spring and avoid failure caused by interference from external debris or other structures.

[0059] In one embodiment, reference is made to Figures 1 to 7The upper end of the connector 40 is provided with a second hinge shaft 42 located on both sides of the groove 43. The mounting member 60 is provided with a second hinge seat, and the second hinge seat is provided with a second shaft hole for mounting the second hinge shaft 42. The upper end of the elastic member 50 is connected to the second hinge seat. In this embodiment, the fixing point of the upper end of the spring should be located on one side of the second hinge shaft 42, so that the spring and the connector 40 can maintain a certain angle. The spring tension and the component of the force perpendicular to the connector 40 provide the driving force to drive the connector 40 to swing upward. Specifically, to match the structure of the connector 40, the second hinge seat includes a base plate fixedly disposed on the lower surface of the mounting member 60 and two mounting plates disposed on the lower surface of the base plate and disposed opposite to each other. The second shaft hole is disposed on the mounting plate, and the connector 40 is disposed between the two mounting plates. A hanging hole or pin is also provided on the base plate above the second shaft hole, and the upper end of the spring is disposed on the hanging hole or pin. When drawer 11 is fully pushed into cavity 10 and connector 40 remains vertical, the direction of spring tension coincides with the line connecting the upper and lower hinge points of connector 40, and cover 20 is in a self-locking state.

[0060] In one embodiment, reference is made to Figures 1 to 7 The lower end of the connector 40 is provided with a first hinge shaft 41, and the cover plate 20 is provided with a first hinge seat 21. The first hinge seat 21 is provided with a first shaft hole corresponding to the first hinge shaft 41, and the first hinge shaft 41 can move up and down within the first shaft hole. In this embodiment, the first hinge seat 21 is provided on the upper surface of the cover plate 20, and the first shaft hole is a vertically arranged strip hole or elliptical hole. There is space in the first shaft hole for the first hinge shaft 41 to move, which facilitates the assembly between the connector 40 and the cover plate 20, and can also compensate for dimensional deviations between components. When the drawer 11 is pushed into the cavity 10, even if the connector 40 exerts a certain downward pressure on the drawer 11 through the cover plate 20, it can be compensated by the aforementioned movable space to prevent the connector 40 from blocking the cover plate 20.

[0061] In one embodiment, reference is made to Figures 1 to 7The lower end of the connector 40 is provided with a downwardly extending mounting portion 46, and an elastic abutment 45 is provided on the mounting portion 46, which abuts against the cover plate 20. In this embodiment, since the first shaft hole has a certain amount of room for movement, when the drawer 11 is fully closed, the first hinge shaft 41 is located in the middle area inside the first shaft hole. At this time, it does not exert pressure on the cover plate 20, and relies entirely on the weight of the cover plate 20 to cover the upper opening of the drawer 11. The pressure is small and does not affect the sealing effect. By setting the elastic abutment 45, the downward pressure of the connector 40 can be transmitted to the cover plate 20 to improve the sealing performance. Specifically, a compression spring can be sleeved on the mounting portion 46, with one end of the compression spring abutting against the cover plate 20 to ensure that the first hinge shaft 41 is located in the upper area inside the first shaft hole. By setting the first shaft hole and the first hinge shaft 41 in a clearance fit structure, and by using a compression spring to position the first hinge shaft 41 in the upper region inside the first shaft hole, the clearance between the shaft hole and the hinge shaft can accommodate the tolerances in the structure or assembly, and the compression spring can also provide a certain pressure to the cover plate 20.

[0062] In one embodiment, reference is made to Figures 1 to 7 The elastic abutment 45 is a spring sheet, which is disposed at the lower end of the mounting portion 46, and a deformation gap is formed between the spring sheet and the connecting member 40. In this embodiment, the elastic abutment 45 can be configured as a spring sheet in addition to the compression spring described above. The connecting member 40, the mounting portion 46, and the elastic abutment 45 can be integrally injection molded. One end of the spring sheet is connected to the mounting portion 46, and the other end extends along a direction parallel to the first hinge axis 41. The lower surface of the spring sheet is configured as an arc surface so that the connecting member 40 remains in contact with the cover plate 20 during rotation. Even if the connecting member 40 rotates to the lowest position, causing the elastic abutment 45 to apply a certain pressure to the cover plate 20, the deformation gap can still provide deformation space for the deformation of the elastic abutment 45.

[0063] In one embodiment, reference is made to Figures 1 to 7 The number of connectors 40 is at least two, and the at least two connectors 40 are spaced apart along the length of the cover plate 20. In this embodiment, the end closer to the refrigerator door is the front side, the end extending into the cavity 10 and away from the door is the rear side, and the two sides of the drawer 11 perpendicular to the front and back directions are the left and right sides, respectively. Two connectors 40 can be provided, located on the left and right sides of the cover plate 20, with one on the front side and the other on the rear side. This solution minimizes the number of connectors 40, but it may result in uneven force distribution. Therefore, it is best to provide four connectors 40, located on the left and right sides of the cover plate 20, with one connector at each of the front and rear ends of the left and right sides. This makes the force on the cover plate 20 more balanced and the swing more stable when it swings.

[0064] This invention also proposes a refrigerator control method, referring to... Figures 1 to 9 The control method for this refrigerator, applied to the aforementioned refrigerator, includes the following steps:

[0065] S10 obtains the switch status information of drawer 11; in this step, the switch status information of drawer 11 can be obtained by a position sensor (limit switch or proximity switch) set inside the housing, and the switch status information is sent to the refrigerator's control module.

[0066] S11 acquires the humidity status information of the refrigerator cavity; in this step, only when the humidity inside the refrigerator cavity 10 is low can the fan 30 be triggered to complete the dehumidification process inside the drawer 11. The opening and closing of the refrigerator door and the defrosting process inside the cavity 10 will increase the humidity. By acquiring the humidity status information through the sensor, the humidity status of the cavity 10 can be monitored.

[0067] When S20 determines that drawer 11 is closed and the refrigerator cavity is in a low-humidity state, it controls the fan 30 to start to adjust the humidity inside drawer 11. In this step, the control module determines whether the refrigerator meets the dehumidification conditions based on the above switch status information. The dehumidification conditions include two aspects: First, the refrigerator door and drawer 11 are closed. When the refrigerator door and drawer 11 are closed, the internal cavity 10 of the refrigerator is isolated from the external environment, and no humid air will enter the drawer 11 and the cavity 10. Second, the refrigerator is in a low-humidity state. When the humidity of the refrigerator cavity 10 meets the set value, the dry and cold air inside the cavity 10 can be drawn into drawer 11. The low-humidity state of the cavity 10 can be achieved directly by controlling the condenser to cool for a period of time to complete the dehumidification inside the cavity 10. Alternatively, a humidity sensor can be set to acquire humidity information and transmit it to the control module for feedback. Then, the control module controls the fan 30 to run and achieve dehumidification inside drawer 11.

[0068] In one embodiment, reference is made to Figures 1 to 9 Step S20 further includes step S21, which controls the fan 30 to run for a first preset time and then stop. When the above two dehumidification conditions are met, the control module controls the fan 30 to run for a first preset time (specifically 5 to 20 minutes) to dehumidify the inside of the drawer 11, and then the fan 30 stops dehumidifying.

[0069] In one embodiment, reference is made to Figures 1 to 9 The step S10 is followed by the following steps:

[0070] S11 determines that the refrigerator door is closed and controls the refrigerator's condenser to run for a third preset time to maintain a low humidity state in the refrigerator cavity. In this step, the control module confirms whether the refrigerator door is closed based on information from the position sensor. After it is closed, the control module controls the refrigerator's condenser to run for 5 to 30 minutes. After the condenser runs, it removes the moisture from the outside air brought in by opening the door, maintaining a low humidity state in the refrigerator cavity.

[0071] In one embodiment, reference is made to Figures 1 to 9 After step 20, the method further includes:

[0072] S30 acquires the open / closed status information of drawer 11 and the humidity status information of refrigerator cavity 10 within a second preset time period; after dehumidification is completed inside drawer 11, the refrigerator door and drawer 11 remain closed, and the condenser inside the refrigerator continues to operate, maintaining a low humidity state inside cavity 10. The control module acquires the status information of the refrigerator and drawer 11 through the aforementioned sensors. Timing is also started after the first dehumidification of drawer 11 is completed.

[0073] S31 determines that the drawer is closed and the refrigerator cavity is in a low-humidity state within the second preset time period, and then controls the fan to start running for a fourth preset time period before stopping. In this step, the second preset time period is longer than the first preset time period, and the range of the second preset time period is 20-120 minutes. If the drawer 11 and the refrigerator door remain closed throughout the second preset time period, the fan 30 is turned on and runs for the first preset time period when the second preset time period is completed to perform a new round of dehumidification on the drawer 11. After dehumidification is completed, the stage timing is started again, and this cycle repeats.

[0074] In one embodiment, reference is made to Figures 1 to 9 The above step S31 is followed by the following steps:

[0075] After the fan 30 stops running, the refrigerator is controlled to defrost internally. The refrigerator is defrosted during idle time. During defrosting, the condenser will stop, and a large amount of moisture will be generated. Stopping the fan 30 at this time prevents moisture from entering drawer 11.

[0076] The refrigerator is dehumidified internally to maintain a low humidity level in the refrigerator cavity 10. During this step, defrosting increases the humidity in the refrigerator cavity 10. After defrosting is complete, the condenser is restarted to complete the dehumidification process inside the refrigerator cavity 10. The defrosting and dehumidification processes described above can be inserted between two separate dehumidification stages.

[0077] In one embodiment, reference is made to Figures 1 to 9 The step 31 is followed by the following steps:

[0078] The condenser and fan 30 are controlled to stop operating. In this step, after the drawer 11 has completed multiple rounds of dehumidification, the refrigerator door and drawer 11 are still closed. The condenser and fan 30 can be controlled to stop operating to avoid unnecessary power consumption.

[0079] When the condenser and fan 30 stop for a longer than the seventh preset time, and the refrigerator door remains closed during the seventh preset time, the condenser is controlled to operate for a fifth preset time. Since the condenser and fan 30 stop in the previous step, the temperature and humidity inside the refrigerator will fluctuate. After the condenser stops for the seventh preset time (10-40 minutes), the condenser is restarted. The fifth preset time is about 5-30 minutes, thereby achieving cooling and dehumidification of the refrigerator interior.

[0080] The fan 30 is controlled to operate for a sixth preset time. This step involves dehumidifying the inside of the chamber again, with the sixth preset time being 5 to 20 minutes.

[0081] Vegetables and fruits are stored in drawer 11. When the humidity is too high, water droplets may condense on the inner walls of drawer 11 and cover 20. In order to avoid the appearance of water droplets and ensure the normal preservation of vegetables and fruits, the inside of drawer 11 is briefly dehumidified every fourth set time interval. Specifically, the motor can be driven to run for 1-3 minutes.

[0082] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A refrigerator characterized by comprising: The application relates to a refrigerator, comprising: a shell provided with a cavity; a cover plate arranged in the cavity; a drawer arranged in the cavity in a push-pull mode, the drawer being provided with a storage cavity with an open upper end, the cover plate being used to cover the opening when the drawer is arranged in the cavity, and the storage cavity being communicated with the cavity through an air flow channel; a fan arranged on the drawer or the cover plate, the fan being used to discharge dry air in the cavity into the drawer or discharge humid air in the drawer; mounting pieces arranged in the cavity in a fixed mode, the mounting pieces being used to divide the cavity into multiple storage areas; connecting pieces hingedly connected with the mounting pieces at upper and lower ends of the connecting pieces and the cover plate, the connecting pieces being connected with the mounting pieces through springs, and the angle between the connecting line of the hinging centers of the upper and lower ends of the connecting pieces and the center line of the springs being in the range of -15 DEG to 15 DEG when the drawer is completely pushed into the cavity.

2. The refrigerator according to claim 1, characterized in that, The air flow channel comprises a gap formed on the cover plate and the upper end of the drawer.

3. The refrigerator according to claim 1 or 2, characterized in that, The air flow channel comprises a ventilation hole arranged on the cover plate or the drawer.

4. The refrigerator according to claim 3, characterized in that, The fan is arranged at the ventilation hole.

5. The refrigerator according to claim 4, characterized in that, The cover plate is arranged in a concave mode to form a containing cavity, the ventilation hole is arranged on the containing cavity, and the fan is arranged in the containing cavity and corresponds to the ventilation hole.

6. The refrigerator according to claim 3, characterized in that, A handle part is arranged on the side of the drawer, and the ventilation hole is arranged on the cover plate and close to the handle. 7.A control method of a refrigerator, characterized by, The application is applied to the refrigerator in any one of claims 1-6, and comprises the following steps: acquiring the opening and closing state information of the drawer; acquiring the humidity state information of the cavity of the refrigerator; when the drawer is in a closed state and the cavity of the refrigerator is in a low humidity state, controlling the fan to start to adjust the humidity in the drawer.

8. The control method of the refrigerator according to claim 7, characterized in that, After the step of controlling the fan to start to adjust the humidity in the drawer, the method further comprises: controlling the fan to stop after running for a first preset time length.

9. The control method of the refrigerator according to claim 8, characterized in that, After the step of controlling the fan to stop after running for a first preset time length, the method further comprises: acquiring the opening and closing state information of the drawer and the humidity state information of the cavity of the refrigerator within a second preset time length; when the drawer is in a closed state and the cavity of the refrigerator is in a low humidity state within the second preset time length, controlling the fan to start to run for a fourth preset time length and then stop.

10. The control method of the refrigerator according to claim 7, characterized in that, After the step of acquiring the humidity state information of the cavity of the refrigerator, the method further comprises: when the refrigerator door is in a closed state, controlling the condenser of the refrigerator to run for a third preset time length to make the cavity of the refrigerator in a low humidity state.

11. The control method of the refrigerator according to claim 9, characterized in that, After the step of controlling the fan to start to run for a fourth preset time length and then stop, the method further comprises: controlling the refrigerator to perform internal defrosting after the fan stops running.

12. The control method of the refrigerator according to claim 11, characterized in that, After the step of controlling the refrigerator to perform internal defrosting after the fan stops running, the method further comprises: controlling the refrigerator to perform internal dehumidification to make the cavity of the refrigerator in a low humidity state.

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