Refrigerator filter device and refrigerator comprising same

Abstract

The application provides a refrigerator filter device and a refrigerator comprising the same. The refrigerator filter device is arranged at an air inlet of a fan and comprises: a filter element provided with filter holes and movably mounted at the air inlet, the filter holes being capable of communicating with the air inlet; and an actuating assembly capable of acting on the filter element to enable the filter element to move relative to the air inlet to switch between a first working state and a second working state. In the first working state, the filter element forms a first included angle with an end face of the air inlet; in the second working state, the filter element forms a second included angle with the end face of the air inlet. The maximum value of the first included angle is less than the minimum value of the second included angle. In a refrigeration mode, the filter element is in the second working state, capable of reducing the influence of the filter element on the air volume and being beneficial to ensuring normal refrigeration of the refrigerator. In a defrosting mode, the filter element is in the first working state, capable of effectively blocking defrosting water blown by the air to reduce water vapor in the air duct.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of refrigerators, in particular to a refrigerator filter device and a refrigerator comprising the same. BACKGROUND

[0002] At present, the air-cooled refrigerator mainly uses a fan as a power source to circulate cold air inside. When the refrigerator is working, water vapor is easily sucked into the fan air duct (especially when the refrigerator is defrosting). When the temperature decreases, ice will form inside the air duct, hindering the flow, and even damaging the air door and air duct structure. At present, the industry usually places the evaporator below the fan inlet (i.e., downstream of the fan inlet), reducing the amount of water vapor sucked by the fan. In addition, a hole is usually opened on the fan bottom air duct to allow water to flow out of the air duct.

[0003] For the scheme of placing the evaporator below the fan inlet, such a solution can reduce the water vapor entering the air duct to some extent, but it limits the layout of the evaporator in the refrigerator, which also limits the way of air circulation. Because the airflow needs to pass through the evaporator for cooling, and then enter the fan to be delivered to each direction of the cabinet, this scheme requires the airflow in the cabinet to return to the evaporator from the bottom. Such an arrangement will make the evaporator close to the bottom, and the water receiving box will have a lower temperature, which may cause the water receiving box to freeze.

[0004] For the scheme of opening a hole on the fan bottom air duct to allow water to flow out, it can reduce the water vapor in the air duct to some extent, but the hole will cause air leakage and pressure loss, thereby affecting the efficiency of the fan. At the same time, water droplets adhere around the hole, which is easy to expand and freeze under the condition of temperature reduction, further damaging the hole, thereby causing the hole to be enlarged, further affecting the efficiency due to air leakage.

[0005] Therefore, the existing technology for reducing water vapor in the air duct usually affects the efficiency of the fan or the normal use of the water receiving box. SUMMARY

[0006] The technical problem to be solved by the present application is to overcome the defect that the existing technology for reducing water vapor in the air duct affects the efficiency of the fan, and to provide a refrigerator filter device and a refrigerator comprising the same.

[0007] The present application solves the above technical problems by the following technical solutions:

[0008] A refrigerator filter device is arranged at a fan inlet, and the filter device comprises:

[0009] a filter element provided with filter holes, which is movably installed at the fan inlet, and the filter holes are in communication with the fan inlet; and

[0010] The actuating assembly can act on the filter element to enable the filter element to move relative to the air inlet and switch between a first working state and a second working state;

[0011] When the filter element is in the first working state, the filter element forms a first included angle with the end face of the air inlet, and the first included angle ranges from a first value range;

[0012] When the filter element is in the second working state, the filter element forms a second included angle with the end face of the air inlet, and the second included angle ranges from a second value range;

[0013] The maximum value of the first included angle is less than the minimum value of the second included angle.

[0014] In this scheme, by operating the actuating assembly, the filter element can be in the second working state when the refrigerator is in the refrigeration mode, and the filter element can be in the first working state when the refrigerator is in the defrosting mode. When the filter element is in the second working state, the filter element can be opened to a larger position relative to the air inlet of the fan, which can reduce the resistance and thus reduce the influence of the filter element on the air volume, which is conducive to ensuring the normal refrigeration of the refrigerator and thus conducive to ensuring the efficiency of the fan. When the filter element is in the first working state, the filter element is closed to a smaller position relative to the air inlet of the fan, and the filter element can effectively block the defrosting water blown by the wind, thereby reducing the water vapor in the air duct.

[0015] Preferably, when the filter element is in the first working state, the filter element is used to cover the air inlet, and the first included angle is 0.

[0016] When the filter element is in the second working state, the filter element is removed from the air inlet.

[0017] In this scheme, when the filter element is in the first working state, the filter element covers the air inlet of the fan, which means that the filter element is closed to the minimum relative to the air inlet of the fan, and the filter element can more effectively block the defrosting water blown by the wind, thereby reducing the water vapor in the air duct. When the filter element is in the second working state, the filter element is removed from the air inlet, which means that the filter element does not block the air inlet at all in the air inlet path, which means that the filter element can be opened to the maximum position relative to the air inlet of the fan, which can minimize the resistance and thus further reduce the influence of the filter element on the air volume, which is conducive to ensuring the normal refrigeration of the refrigerator and thus conducive to ensuring the efficiency of the fan.

[0018] Preferably, the filter element has a first end and a second end along the extending direction, the first end of the filter element is used to rotate relative to the air inlet, and the output end of the actuating assembly is used to act on the second end of the filter element to drive the filter element to rotate relative to the air inlet.

[0019] Preferably, the filter holes are uniformly distributed on the filter element, and the filter holes are hexagons with a height greater than a width.

[0020] In this scheme, the actuating assembly drives the filter element to realize the state switching of the filter element, which is convenient to operate and easy to realize. In addition, the filter holes are arranged in a hexagonal shape, which is beneficial to ensure the strength and stability of the filter element, so that the filter element can withstand greater pressure and impact. The filter element with hexagonal filter holes has high space utilization and better fluid dynamics performance, which reduces the resistance and pressure drop. The height of the hexagonal shape is greater than the width, which is beneficial to the downward sweeping of water vapor along the height side.

[0021] Preferably, the actuating assembly comprises an actuator, the filter element comprises a filter body and a connecting portion, the filter body is a ring structure and is used to adapt to the shape of the air inlet, the first end of the filter body is used to rotate relative to the air inlet, the connecting portion is arranged at the second end of the filter body and is used to be arranged outside the air inlet, and the output end of the actuator is used to act on the connecting portion.

[0022] Preferably, when the filter element is in the second working state, the filter element is unfolded relative to the air inlet, and the filter element has a plurality of unfolded positions relative to the air inlet.

[0023] Preferably, when the filter element is in different unfolded positions, the filter element and the air inlet enclose different angles.

[0024] In this scheme, the actuator can realize the automatic switching of the state of the filter element, which is more convenient to operate and can improve the efficiency of the state transition of the filter element. The connecting portion extends out of the filter body as the acting part of the output end of the actuator, which does not occupy the position or space on the filter body and does not affect the normal use of the filter body. When the filter element is in the second working state, the plurality of unfolded positions can make the filter element have a plurality of different positions relative to the air outlet, which can meet different use requirements and has stronger use flexibility.

[0025] Preferably, the filter device further comprises a water blocking element, the water blocking element is arranged at the first end of the filter element and located at the top of the filter element.

[0026] The water blocking element is arranged to be fixed to the air inlet, and the first end of the filtering element is movably arranged on the water blocking element and rotatable relative to the water blocking element.

[0027] When the filtering element is in the first working state, the filtering element extends out of the air inlet by a distance not greater than that of the water blocking element.

[0028] In this solution, the water blocking element mainly deals with the water droplets that have been formed, and the thickness relationship between the filtering element and the water blocking element is set to ensure that the water droplets falling on the water blocking strip do not directly pass over the water blocking element but slide along the extension direction of the water blocking element. In addition, the filtering element extends out of the air inlet by a distance not greater than that of the water blocking element, which can reduce the surface area of the filtering element in contact with the water droplets falling from above, thereby reducing the risk of water droplets being sucked in.

[0029] Preferably, the water blocking element is annularly arranged outside the filtering element in the circumferential direction, and the shape of the water blocking element is adapted to that of the first end of the filtering element.

[0030] Preferably, the water blocking element is annularly arranged outside the filtering element in the circumferential direction, and the shape of the water blocking element is adapted to that of the first end of the filtering element.

[0031] In this solution, the water blocking element can reliably play a role in dealing with water droplets without affecting the state switching of the filtering element. In addition, the central angle of the water blocking element is not less than 180°, so that when the water droplets slide off the water blocking element, the gravitational acceleration of the water droplets is along the tangential direction of the air inlet or away from the air inlet, making it easier for the water droplets to slide off and further reducing the water droplets entering the filtering element or the air inlet.

[0032] Preferably, the water blocking element has an inverted bevel extending away from the filtering element at both ends of the extension direction.

[0033] In this solution, the water blocking element has an inverted bevel extending away from the filtering element at both ends of the extension direction. Compared with a flat surface, the surface curvature of the inverted bevel changes more, which reduces the adhesion of the water droplets on the surface and makes it easier for the water droplets to slide off, further reducing the water droplets entering the filtering element or the air inlet.

[0034] Preferably, the filtering device further comprises a rotating element arranged on the side of the filtering element away from the air inlet, and the rotating element is attached to the side surface of the filtering element.

[0035] When the filter element is in the first working state, the rotating element can rotate circumferentially relative to the filter element in the plane in which the filter element lies;

[0036] Preferably, the water blocking element is or is arranged with a permanent magnet, and a coil and a wire for electrically connecting the coil are embedded in the rotating element; or, the water blocking element is or is arranged with a permanent magnet, a coil and a wire for electrically connecting the coil are embedded in the rotating element, and an electrically resistive wire is arranged at one end of the rotating element facing the filter element and is electrically connected to the wire.

[0037] Preferably, the two ends of the rotating element are in the form of a circular arc.

[0038] In this scheme, the above structure is adopted, and when the rotating element rotates, it can sweep the surface of the filter element, thereby physically defrosting the surface of the filter element. The coil is arranged in the rotating element, and the water blocking element is arranged with or is a permanent magnet. When the rotating element starts to rotate around the filter element, the coil inside the rotating element will cut the magnetic induction lines together, and an induced current is generated due to the change of the magnetic flux. When the induced current passes through the electrically resistive wire, the electric energy is converted into heat energy due to the existence of the electric resistance, thereby increasing the temperature of the rotating element, and the filter element can be better defrosted.

[0039] Preferably, the rotating element and the filter element are concentrically arranged, along the thickness direction of the filter element, the rotating element comprises a first rotating part and a second rotating part connected together, and the second rotating part is located between the first rotating part and the filter element, along the extension direction of the filter element, the length of the first rotating part is not greater than the length of the second rotating part, the first rotating part and the second rotating part enclose a cavity, the wire is arranged in the first rotating part and the second rotating part, and the electrically resistive wire is arranged in the second rotating part.

[0040] And / or, when the filter element is in the first working state, along the thickness direction of the filter element, the sum of the thickness of the rotating element and the thickness of the filter element is not greater than the thickness of the water blocking element.

[0041] In this scheme, the first rotating part and the second rotating part form a cavity, which is beneficial to save materials and reduce the weight of the rotating element, and thus is also beneficial to reduce the weight of the refrigerator filter device. In addition, the electrically resistive wire is arranged in the second rotating part, and the second rotating part is attached to the surface of the filter element, which is beneficial to better transfer heat to the filter element and defrost the filter element.

[0042] The application further provides a refrigerator comprising a fan and an air inlet back plate provided with an air inlet for the fan, and further comprising the refrigerator filter device described above.

[0043] The refrigerator has a refrigeration mode and a defrosting mode;

[0044] When the refrigerator is in the defrosting mode, the filter element is in the first working state;

[0045] When the refrigerator is in the refrigeration mode, the filter element is in the second working state.

[0046] Preferably, the actuating assembly is mounted on the air inlet back plate.

[0047] And / or, the refrigerator further comprises an evaporator located upstream of the fan.

[0048] In this scheme, the actuating assembly is mounted on the air inlet back plate, without the need to additionally add other structures for mounting the actuating assembly, which is conducive to simplifying the structure of the refrigerator and improving the space utilization. In addition, the evaporator is located upstream of the fan, and the airflow passes through the evaporator for refrigeration and then enters the fan through the air inlet and is delivered to various directions of the cabinet of the refrigerator. The evaporator is far away from the bottom water receiving box, which is conducive to improving the icing condition of the water receiving box.

[0049] The positive progress effect of the application is that:

[0050] In the refrigerator filter device, by operating the actuating assembly, the filter element can be in the second working state when the refrigerator is in the refrigeration mode, and the filter element can be in the first working state when the refrigerator is in the defrosting mode. When the filter element is in the second working state, the filter element can be opened to a larger position relative to the air inlet of the fan, which can reduce the resistance and thus reduce the influence of the filter element on the air volume, which is conducive to ensuring the normal refrigeration of the refrigerator and further conducive to ensuring the efficiency of the fan. When the filter element is in the first working state, the filter element is closed to a smaller position relative to the air inlet of the fan, and the filter element can effectively block the defrosting water blown by the wind, thereby reducing the water vapor in the air duct. The filter element mainly deals with water vapor in the air, which condenses, sweeps and collects on the surface of the filter element, and can be separated from the filter element under the action of gravity and then fall to the bottom water receiving box and then be discharged through the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 FIG. 1 is a structural schematic view of a refrigerator according to Embodiment 1 of the application.

[0052] Figure 2 FIG. 2 is a partial structural schematic view of a refrigerator filter device according to Embodiment 1 of the application.

[0053] Figure 3 Another partial structure diagram of the filter device of the refrigerator of the embodiment 1 of the present application.

[0054] Figure 4 A structure diagram of the refrigerator of the embodiment 2 of the present application.

[0055] Figure 5 A partial structure diagram of the refrigerator of the embodiment 2 of the present application.

[0056] Figure 6 A partial structure diagram of the filter device of the refrigerator of the embodiment 2 of the present application.

[0057] Figure 7 Another partial structure diagram of the filter device of the refrigerator of the embodiment 2 of the present application.

[0058] Figure 8 Another partial structure diagram of the filter device of the refrigerator of the embodiment 2 of the present application, which shows the internal structure of the rotating element.

[0059] Figure 9 Another partial structure diagram of the filter device of the refrigerator of the embodiment 2 of the present application, which shows the internal structure of the rotating element.

[0060] Explanation of reference numerals:

[0061] 1 air inlet

[0062] 2 filter device

[0063] 10 filter element

[0064] 101 filter hole

[0065] 102 filter body

[0066] 103 connecting part

[0067] 20 actuating assembly

[0068] 201 actuator

[0069] 30 water blocking element

[0070] 301 negative pole of magnet

[0071] 302 positive pole of magnet

[0072] 40 rotating shaft

[0073] 50 rotating element

[0074] 501 first rotating part

[0075] 502 second rotating part

[0076] 503 cavity

[0077] 504 mounting holes

[0078] 60 drive motor

[0079] 70 wire

[0080] 80 resistance wire

[0081] 3 fans

[0082] 4 Air Inlet Back Panel

[0083] 5 Evaporators Detailed Implementation

[0084] The present invention will be described more clearly and completely below with reference to a preferred embodiment and the accompanying drawings.

[0085] Example 1

[0086] like Figures 1 to 3 As shown, this embodiment provides a refrigerator filter device 2, which is installed at the air inlet 1 of a fan 3. The filter device 2 includes a filter element 10 and an actuation assembly 20. The filter element 10 is provided with filter holes 101, which are movably installed at the air inlet 1 and can communicate with the air inlet 1. The actuation assembly 20 can act on the filter element 10 to make the filter element 10 move relative to the air inlet 1 and can switch between a first working state and a second working state. When the filter element 10 is in the first working state, the filter element 10 forms a first angle with the end face of the air inlet 1, and the value range of the first angle is a first value range; when the filter element 10 is in the second working state, the filter element 10 forms a second angle with the end face of the air inlet 1, and the value range of the second angle is a second value range. The maximum value of the first angle is less than the minimum value of the second angle.

[0087] In this embodiment, by operating the actuation component 20, the filter element 10 can be in a second working state when the refrigerator is in cooling mode, and in a first working state when the refrigerator is in defrosting mode. When the filter element 10 is in the second working state, it can be opened to a larger position relative to the air inlet 1 of the fan 3, reducing resistance and thus minimizing its impact on airflow, which helps ensure normal cooling of the refrigerator and consequently improves the efficiency of the fan 3. When the filter element 10 is in the first working state, it is closed to a smaller position relative to the air inlet 1 of the fan 3, effectively blocking defrosting water blown by the wind and reducing moisture in the air duct. The filter element 10 primarily deals with moisture in the air; moisture condenses, sweeps, and collects on its surface, and under gravity, it detaches from the filter element 10, falling into the water collection box at the bottom and then being discharged through the pipes.

[0088] It should be noted that the surface of the filter element 10 has a hydrophobic coating, and water vapor can condense and drip on the surface of the filter element 10, be collected in the water collecting box, and then be discharged through the pipeline.

[0089] The first value range of the first included angle and the value range of the second included angle are not limited here, and the first value range and the second value range can be flexibly set according to actual needs under the condition of not interfering with the internal structure of the refrigerator. For example, the first value range of the first included angle can be 0-15°, and the second value range of the second included angle is greater than 15° and less than or equal to 60°. As a preferred setting mode, when the filter element 10 is in the first working state, the filter element 10 is used to cover the air inlet 1. When the filter element 10 is in the second working state, the filter element 10 is removed from the air inlet 1.

[0090] When the filter element 10 is in the first working state, the filter element 10 covers the air inlet 1 of the fan 3, which means that the filter element 10 is closed to the minimum relative to the air inlet of the fan 3, and the filter element 10 can more effectively block the defrosting water blown by the wind and reduce the water vapor in the air duct. When the filter element 10 is in the second working state, the filter element 10 is removed from the air inlet 1, which means that the filter element 10 does not block the air inlet 1 at all in the air inlet path, which means that the filter element 10 can be opened to the maximum position relative to the air inlet 1 of the fan 3, which can minimize resistance and thus further reduce the impact of the filter element 10 on the air volume, which is conducive to ensuring the normal refrigeration of the refrigerator and thus conducive to ensuring the efficiency of the fan.

[0091] In addition, in order to ensure that the filter element 10 can function when needed, the part of the filter element 10 covering the air inlet 1 extends out of the air inlet 1 in the circumferential direction. That is, if the part of the filter element 10 covering the air inlet 1 and the cross section of the air inlet 1 are both circular, the radius of the part of the filter element 10 covering the air inlet 1 is greater than the radius of the air inlet 1.

[0092] Reference Figures 1 to 3 It should be understood that the part of the filter element 10 covering the air inlet 1 is uniformly distributed with a plurality of filter holes 101, the shape of the filter hole 101 is a hexagon, and the height of the hexagon is greater than the width. Among them, arranging the filter holes 101 as a hexagon is conducive to ensuring the strength and stability of the filter element 10, so that the filter element 10 can withstand greater pressure and impact, and the filter element 10 with hexagonal filter holes 101 has high space utilization and better fluid dynamics performance, reducing resistance and pressure drop. The height of the hexagon is greater than the width, which is conducive to the downward sweeping of water vapor along the height side.

[0093] It should be noted that in other alternative embodiments, the shape of the filter hole 101 can also be set to other shapes, such as a circular shape, according to actual design needs.

[0094] With reference to Figures 1 to 3 It should be understood that the filter element 10 has a first end and a second end along the extension direction, the first end of the filter element 10 is used for rotation relative to the air inlet 1, and the output end of the actuating assembly 20 is used for acting on the second end of the filter element 10 to drive the filter element 10 to rotate relative to the air inlet 1. In this way, the actuating assembly 20 can realize the state switching of the filter element 10 by driving the filter element 10, which is convenient to operate and easy to realize.

[0095] Further, the actuating assembly 20 includes an actuator 201, the filter element 10 includes a filter body 102 and a connecting portion 103, the filter body 102 is annular in structure and is used for adapting to the shape of the air inlet 1, the first end of the filter body 102 is used for rotation relative to the air inlet 1, and the connecting portion 103 is arranged at the second end of the filter body 102 and is used for being arranged outside the air inlet 1, wherein the output end of the actuator 201 is used for acting on the connecting portion 103.

[0096] In this embodiment, the actuator 201 is an electric motor, the output end of the electric motor acts on the connecting portion 103, and the connecting portion 103 can be pushed away or pulled back relative to the air inlet 1, and in this process, the first end of the filter body 102 can be driven to rotate around the air inlet 1 through the connecting portion 103.

[0097] It should be noted that in other alternative embodiments, the actuator 201 can also be set as a pneumatic cylinder.

[0098] In a preferred arrangement, when the filter element 10 is in the second working state, the filter element 10 is unfolded relative to the air inlet 1, and the filter element 10 has a plurality of unfolded positions relative to the air inlet 1. When the filter element 10 is in different unfolded positions, the filter element 10 and the air inlet 1 enclose different angles.

[0099] In this way, the actuator 201 can realize the automatic switching of the state of the filter element 10, which is more convenient to operate and can improve the efficiency of the state transition of the filter element 10. The connecting portion 103 extends out of the filter body 102 as the acting part of the output end of the actuator 201, which does not occupy the position or space on the filter body 102 and does not affect the normal use of the filter body 102. When the filter element 10 is in the second working state, the plurality of unfolded positions can make the filter element 10 have a plurality of different positions relative to the air outlet, which can meet different use requirements and has stronger use flexibility.

[0100] As Figures 1 to 3As shown, the filtering device 2 further comprises a water blocking element 30, which is arranged at the first end of the filtering element 10 and on the top of the filtering element 10. The water blocking element 30 is fixed to the air inlet 1, and the first end of the filtering element 10 is movably arranged on the water blocking element 30 and rotatable relative to the water blocking element 30. When the filtering element 10 is in the first working state, the filtering element 10 extends out of the air inlet 1 by a distance not greater than the distance by which the water blocking element 30 extends out of the air inlet 1 along the thickness direction of the filtering element 10.

[0101] Here, the water blocking element 30 mainly deals with the water droplets that have been formed, and the thickness relationship between the filtering element 10 and the water blocking element 30 is arranged to facilitate ensuring that the water droplets falling on the thickness of the water blocking element 30 do not directly pass over the water blocking element 30, but can slide along the extension direction of the water blocking element 30. In addition, the filtering element 10 extends out of the air inlet 1 by a distance not greater than the distance by which the water blocking element 30 extends out of the air inlet 1, which can reduce the surface area of the filtering element 10 in contact with the water droplets falling from above, thereby reducing the risk of the water droplets being sucked in.

[0102] It should be noted that according to the raindrop spectrum and experimental results, the thickness of the water blocking element 30 is not less than 3 mm, and correspondingly, the thickness of the filtering element 10 is not greater than 3 mm.

[0103] As a preferred arrangement, as shown in Figures 1 to 3 As shown, the water blocking element 30 is circumferentially arranged outside the filtering element 10, and the shape of the water blocking element 30 is adapted to the shape of the first end of the filtering element 10. In this way, the water blocking element 30 can reliably play a role in dealing with water droplets without affecting the state switching of the filtering element 10.

[0104] As another preferred arrangement, as shown in Figures 1 to 3 The filtering element 10 is connected to the water blocking element 30 through a rotating shaft 40, so that the filtering element 10 can rotate or flip relative to the water blocking element 30.

[0105] Alternatively or additionally, the water blocking element 30 is in a ring structure, and the central angle of the water blocking element 30 is not less than 180°. Here, when the water droplets falling from the water blocking element 30 are separated at the end of the water blocking element 30, the gravitational acceleration of the water droplets is tangential to the air inlet 1 or away from the air inlet 1, so that the water droplets are more likely to slide down, thereby reducing the water droplets entering the filtering element 10 or the air inlet 1.

[0106] As shown in Figure 2 and Figure 3As shown, the two ends of the water blocking element 30 in the extending direction are provided with inverted bevels extending away from the filter element 10. In this way, the two ends of the water blocking element 30 are provided with inverted bevels extending outward, and the surface curvature of the inverted bevels changes greatly relative to a flat surface, so that the adhesion of water droplets on the surface is reduced, and the water droplets are more likely to slide off, thereby further reducing the water droplets entering the filter element 10 or the air inlet 1.

[0107] As shown in Figure 1 and Figure 2 The embodiment also provides a refrigerator, which comprises a fan 3, an air inlet back plate 4, and the refrigerator filter device 2 described above, wherein the air inlet back plate 4 is provided with an air inlet 1 for the fan 3. The refrigerator has a refrigeration mode and a defrosting mode; wherein when the refrigerator is in the defrosting mode, the filter element 10 is in the first working state; and when the refrigerator is in the refrigeration mode, the filter element 10 is in the second working state.

[0108] As shown in Figure 2 As a preferred arrangement, the actuating assembly 20 is mounted on the air inlet back plate 4. In this way, the actuating assembly 20 is mounted on the air inlet back plate 4, without the need for additional structures for mounting the actuating assembly 20, which is conducive to simplifying the structure of the refrigerator and improving the space utilization.

[0109] As shown in Figure 1 As another preferred arrangement, the refrigerator further comprises an evaporator 5 located upstream of the fan 3. In this way, the evaporator 5 is located upstream of the fan 3, and the airflow is cooled by the evaporator 5 before entering the fan 3 through the air inlet 1 and being delivered to various directions of the refrigerator cabinet, and the evaporator 5 is far away from the bottom water collecting box, which is conducive to improving the icing condition of the water collecting box.

[0110] The refrigerator provided in the embodiment is provided with the refrigerator filter device 2 described above, and by operating the actuating assembly 20, the filter element 10 can be in the second working state when the refrigerator is in the refrigeration mode, and the filter element 10 can be in the first working state when the refrigerator is in the defrosting mode. When the filter element 10 is in the second working state, the filter element 10 can be opened to the maximum relative to the air inlet 1 of the fan 3, reducing the resistance, so as to reduce the influence of the filter element 10 on the air volume, which is conducive to ensuring the normal refrigeration of the refrigerator, and further conducive to ensuring the efficiency of the fan 3. When the filter element 10 is in the first working state, the filter element 10 covers the air inlet 1 of the fan 3, which is equivalent to the filter element 10 being closed to the minimum relative to the air inlet 1 of the fan 3, and the filter element 10 can effectively block the defrosting water blown by the wind, and can reduce the water vapor in the air duct. The filter element 10 mainly deals with water vapor in the air, and the water vapor condenses, sweeps, and collects on the surface of the filter element 10, and can be separated from the filter element 10 under the action of gravity, and then falls to the bottom water collecting box and is discharged through the pipeline.

[0111] Example 2

[0112] like Figures 4 to 9 As shown, the refrigerator filter device 2 provided in this embodiment is basically different from the refrigerator filter device 2 provided in Embodiment 1. The main difference is that the refrigerator filter device 2 in this embodiment also includes a rotating element 50. Specifically, the rotating element 50 is disposed on the side of the filter element 10 away from the air inlet 1, and the side of the rotating element 50 facing the filter element 10 is attached to the filter element 10. When the filter element 10 is in the first working state, the rotating element 50 can rotate circumferentially relative to the filter element 10 in the plane where the filter element 10 is located. When the rotating element 50 rotates, it can sweep the surface of the filter element 10, thereby physically defrosting the surface of the filter element 10.

[0113] In other words, compared to Embodiment 1, the refrigerator filter device 2 in this embodiment has an added automatic defrosting function.

[0114] As a preferred setting method, such as Figures 5 to 9 As shown, the water-blocking element 30 is a permanent magnet, and the rotating element 50 has a coil embedded therein and a wire 70 for electrical connection with the coil. Optionally or alternatively, a resistance wire 80 is provided at the end of the rotating element 50 facing the filter element 10, and the resistance wire 80 is electrically connected to the wire 70. The permanent magnet has a negative pole 301 and a positive pole. Figure 9 The conductor 70 and the resistance wire 80 are schematically shown in dashed lines.

[0115] With this configuration, a coil is arranged inside the rotating element 50, and a permanent magnet is arranged in the water-blocking element 30. When the rotating element 50 begins to rotate around the filter element 10, the coil inside it cuts the magnetic field lines, generating an induced current due to the change in magnetic flux. When the induced current passes through the resistance wire 80, the electrical energy is converted into heat energy due to the resistance, which can raise the temperature of the rotating element 50, thereby better defrosting the filter element 10.

[0116] In other alternative embodiments, the water-blocking element 30 may also be configured to have a permanent magnet.

[0117] To achieve the rotation of the rotating element 50, a preferred arrangement is as follows: Figures 5 to 7 As shown, a drive motor 60 is provided at one end of the filter element 10 facing the rotating element 50, and a mounting hole 504 is provided on the rotating element 50 for the output end of the drive motor 60 to be installed and function.

[0118] like Figures 4 to 9As shown in the figure, the rotating element 50 is arranged concentrically with the filter element 10, and along the thickness direction of the filter element 10, the rotating element 50 comprises a first rotating part 501 and a second rotating part 502 connected with each other, and the second rotating part 502 is located between the first rotating part 501 and the filter element 10, and along the extension direction of the filter element 10, the length h of the first rotating part 501 is not greater than the length H of the second rotating part 502, the first rotating part 501 and the second rotating part 502 enclose a cavity 503, the first rotating part 501 and the second rotating part 502 are both provided with a wire 70, and the resistance wire 80 is arranged in the second rotating part 502. Among them, the first rotating part 501 and the second rotating part 502 form the cavity 503, which is beneficial to save materials and reduce the weight of the rotating element 50, and thus it is also beneficial to reduce the weight of the refrigerator filter device 2. In addition, the resistance wire 80 is arranged in the second rotating part 502, and the second rotating part 502 is attached to the surface of the filter element 10, which is beneficial to better transfer heat to the filter element 10 and is beneficial to defrost the filter element 10.

[0119] Specific to the embodiment, as shown in the figure, Figures 4 to 9 The length h of the first rotating part 501 is less than the length H of the second rotating part 502.

[0120] Correspondingly, the second rotating part 502 is provided with a mounting hole 504.

[0121] As a preferred arrangement, as shown in the figure, Figures 4 to 6 When the filter element 10 is in the first working state, along the thickness direction of the filter element 10, the sum of the thickness w of the rotating element 50 and the thickness of the filter element 10 is not greater than the thickness of the water blocking element 30. Among them, as another preferred arrangement, the sum of the thickness W of the rotating element 50 and the thickness of the filter element 10 is equal to the thickness of the water blocking element 30. Among them, from the perspective of magnetic flux, in order to obtain larger magnetic flux, the larger the thickness W of the rotating element 50 is, the more conducive to the magnetic flux. However, from the perspective of water blocking effect, the thickness W of the rotating element 50 should not be too large. On this basis, the sum of the thickness W of the rotating element 50 and the thickness of the filter element 10 is equal to the thickness of the water blocking element 30, which can balance the magnetic flux and the water blocking effect, so that both can reach a higher level.

[0122] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and such changes and modifications all fall within the protection scope of the present application.

Claims

1. A refrigerator filter device for installation at the air inlet of a fan, characterized in that, The refrigerator further comprises an evaporator located upstream of the fan, the filtering device comprising: a filtering element provided with filtering holes for being movably mounted on the air inlet, the filtering holes being capable of communicating with the air inlet; and an actuating assembly capable of acting on the filtering element to enable the filtering element to move relative to the air inlet and to switch between a first working state and a second working state; wherein, when the filtering element is in the first working state, the filtering element forms a first included angle with an end face of the air inlet, the first included angle having a first value range; when the filtering element is in the second working state, the filtering element forms a second included angle with the end face of the air inlet, the second included angle having a second value range; wherein, the maximum value of the first included angle is less than the minimum value of the second included angle; the filtering device further comprises a water blocking element located at the top of the filtering element.

2. The refrigerator filtering device according to claim 1, wherein, when the filtering element is in the first working state, the filtering element is used to cover the air inlet, and the first included angle is 0 degree; when the filtering element is in the second working state, the filtering element is removed from the air inlet.

3. The refrigerator filtering device according to claim 1, wherein, the filtering element has a first end and a second end along an extension direction, the first end of the filtering element is used to rotate relative to the air inlet, and an output end of the actuating assembly is used to act on the second end of the filtering element to drive the filtering element to rotate relative to the air inlet; and / or, the filtering element is uniformly provided with a plurality of filtering holes, the filtering holes are hexagonal in shape, and the height of the hexagonal shape is greater than the width.

4. The refrigerator filtering device according to claim 3, wherein the actuating assembly comprises an actuator, the filtering element comprises a filtering body and a connecting portion, the filtering body is annular in structure and is used to adapt to the shape of the air inlet, the first end of the filtering body is used to rotate relative to the air inlet, the connecting portion is arranged at the second end of the filtering body and is used to be arranged outside the air inlet, and an output end of the actuator is used to act on the connecting portion; and / or, when the filtering element is in the second working state, the filtering element is unfolded relative to the air inlet, and the filtering element has a plurality of unfolded positions relative to the air inlet; wherein, when the filtering element is in different unfolded positions, the filtering element forms different included angles with the air inlet.

5. The refrigerator filtering device according to claim 3, wherein the water blocking element is arranged at the first end of the filtering element; the water blocking element is used to be fixed on the air inlet, the first end of the filtering element is movably mounted on the water blocking element and is rotatable relative to the water blocking element; when the filtering element is in the first working state, along the thickness direction of the filtering element, the distance by which the filtering element extends out of the air inlet is not greater than the distance by which the water blocking element extends out of the air inlet.

6. The refrigerator filtering device according to claim 5, wherein the water blocking element is annularly arranged outside the filtering element in the circumferential direction, and the shape of the water blocking element is adapted to the shape of the first end of the filtering element. And / or, the water blocking element is a ring structure, and a central angle of the water blocking element is not less than 180°.

7. The refrigerator filtering device according to claim 6, wherein Both ends of the water blocking element in the extending direction have an inverted bevel extending away from the filter element.

8. The refrigerator filtering device according to claim 6, wherein, The filter device further comprises a rotating element, which is arranged on a side of the filter element away from the air inlet, and which is attached to a side surface of the filter element. When the filter element is in the first working state, the rotating element can rotate circumferentially in a plane in which the filter element is located.

9. The refrigerator filtering device according to claim 8, wherein, The water blocking element is a permanent magnet or is arranged with a permanent magnet, and a coil and a wire for electrically connecting the coil are embedded in the rotating element; or, the water blocking element is a permanent magnet or is arranged with a permanent magnet, and a coil and a wire for electrically connecting the coil are embedded in the rotating element, and an electrically resistive wire is arranged at an end of the rotating element facing the filter element, and the electrically resistive wire is electrically connected to the wire.

10. The refrigerator filtering device according to claim 9, wherein, Both ends of the rotating element are in a circular arc structure.

11. The refrigerator filtering device according to claim 9, wherein the filter is made of a material selected from the group consisting of activated carbon, zeolite, and a combination thereof. The rotating element is arranged concentrically with the filter element, and along a thickness direction of the filter element, the rotating element comprises a first rotating part and a second rotating part connected in series, and the second rotating part is located between the first rotating part and the filter element, along an extending direction of the filter element, a length of the first rotating part is not greater than a length of the second rotating part, the first rotating part and the second rotating part enclose a cavity, the wire is arranged in the first rotating part and the second rotating part, and the electrically resistive wire is arranged in the second rotating part. And / or, when the filter element is in the first working state, along the thickness direction of the filter element, a sum of a thickness of the rotating element and a thickness of the filter element is not greater than a thickness of the water blocking element.

12. A refrigerator comprising a fan and an air inlet back plate on which an air inlet for the fan is provided, characterized in that, The refrigerator further comprises the filter device of any one of claims 1-11. The refrigerator has a refrigeration mode and a defrosting mode. When the refrigerator is in the defrosting mode, the filter element is in the first working state. When the refrigerator is in the refrigeration mode, the filter element is in the second working state.

13. The refrigerator according to claim 12, wherein The actuating assembly is mounted to the air inlet back plate.

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