Refrigerator filtering device and refrigerator comprising same

Abstract

The invention provides a refrigerator filtering 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, a filter element, a filter element cover, a filter element cover and a filter element cover, and filter holes are formed in the filter element and used for being movably installed at the air inlet and can communicate with the air inlet; and the actuating assembly can act on the filtering element, so that the filtering element can move relative to the air inlet so as to be switched between a first working state and a second working state. In the first working state, a first included angle is formed between the filtering element and the end face of the air inlet; in the second working state, a second included angle is formed between the filtering element and the end face of the air inlet. The maximum value of the first included angle is smaller than the minimum value of the second included angle. In the refrigeration mode, the filter element is in the second working state, the influence of the filter element on the air volume can be reduced, and normal refrigeration of the refrigerator is guaranteed. In the defrosting mode, the filtering element is in the first working state, and defrosting water blown by wind can be effectively blocked, so that water vapor in the air duct is reduced.

Description

Technical Field

[0001] The invention relates to the field of refrigerators, and in particular to a refrigerator filtering device and a refrigerator comprising the same. Background Art

[0002] At present, air-cooled refrigerators mainly use fans as power sources for internal cold air circulation. When the refrigerator is working, water vapor is easily sucked in by the fan and accumulated in the fan duct (especially when the refrigerator is defrosting). When the temperature drops, ice will form inside the duct, hindering the flow and even damaging the damper and duct structure. At present, the industry usually places the evaporator below the fan's air inlet (that is, downstream of the fan's air inlet) to reduce the amount of water vapor sucked in by the fan. In addition, holes are usually opened in the duct at the bottom of the fan to allow water to flow out of the duct along the opening.

[0003] Regarding the solution of placing the evaporator below the air inlet of the fan, although this solution can reduce the amount of water vapor entering the air duct to a certain extent, it limits the layout of the evaporator in the refrigerator, which also limits the way the air circulates. Because the airflow needs to be cooled by the evaporator and then enter the fan to be transported to all directions of the cabinet, this solution requires that the airflow in the cabinet needs to return to the evaporator from the bottom. This arrangement will make the evaporator closer to the bottom, and the temperature of the water box at the bottom will be lower, which will cause the water box to freeze.

[0004] The solution of opening a hole in the air duct at the bottom of the fan to let water out can reduce the water vapor in the air duct to a certain extent, but the hole will cause air leakage in the air duct and produce pressure loss, thus affecting the fan efficiency. At the same time, water droplets adhere to the hole and are prone to expand and freeze when the temperature drops, further damaging the hole, causing the hole to be enlarged, further leaking and affecting efficiency.

[0005] Therefore, the solutions in the prior art for reducing the water vapor in the air duct usually affect the efficiency of the fan or affect the normal use of the water receiving box. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the solution of reducing water vapor in the air duct will affect the efficiency of the fan, and to provide a refrigerator filter device and a refrigerator comprising the same.

[0007] The present invention solves the above technical problems through the following technical solutions:

[0008] A refrigerator filter device is used to be arranged at an air inlet of a fan, and the filter device comprises:

[0009] A filter element having a filter hole thereon, adapted to be movably mounted at the air inlet, wherein the filter hole can be communicated with the air inlet; and

[0010] an actuating assembly capable of acting on the filter element so that the filter element can move relative to the air inlet and can switch between a first working state and a second working state;

[0011] Wherein, when the filter element is in the first working state, the filter element and the end surface of the air inlet form a first angle, and the value range of the first angle is a first value range;

[0012] When the filter element is in the second working state, the filter element and the end surface of the air inlet form a second angle, and the value range of the second angle is a second value range;

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

[0014] In this solution, 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. Wherein, 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, thereby reducing 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, and can reduce the water vapor in the air duct. Wherein, the filter element mainly responds to the water vapor in the air. The water vapor condenses, sweeps, and gathers on the surface of the filter element, and can separate from the filter element under the action of gravity, thereby falling to the water receiving box at the bottom and then discharged through the pipeline.

[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 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 solution, when the filter element is in the first working state, the filter element is covered on the air inlet of the fan, which is equivalent to the filter element being closed to the minimum relative to the air inlet of the fan. The filter element can more effectively block the defrost water blown by the wind and reduce 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 on the air inlet path, which is equivalent to the filter element being opened to the maximum position relative to the air inlet of the fan, which can minimize the resistance, thereby further reducing the influence of the filter element on the air volume, which is conducive to ensuring the normal refrigeration of the refrigerator, and then to ensuring the efficiency of the fan.

[0018] Preferably, the filter element has a first end and a second end along the extension 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] And / or, a plurality of the filter holes are evenly distributed on the filter element, and the filter holes are in a hexagonal shape, and the height of the hexagon is greater than the width.

[0020] In this solution, the actuating assembly realizes the state switching of the filter element by driving the filter element, which is convenient to operate and easy to implement. In addition, the filter holes are arranged in a hexagon, which is conducive to ensuring 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, reducing resistance and pressure drop. The height of the hexagon is greater than the width, which is conducive to the water vapor sweeping down along the height edge.

[0021] Preferably, the actuation assembly comprises an actuator, the filter element comprises a filter body and a connection portion, the filter body is an annular structure and is used to match the shape of the air inlet, the first end of the filter body is used to rotate relative to the air inlet, the connection portion is arranged at the second end of the filter body and is used to be arranged outside the air inlet, wherein the output end of the actuator is used to act on the connection portion;

[0022] and / or, 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] Wherein, when the filter element is in different unfolded positions, the angles formed by the filter element and the air inlet are different.

[0024] In this solution, the actuator can realize the automatic switching of the state of the filter element, which is more convenient to operate and can also improve the efficiency of the state transition of the filter element. The connecting part extends out of the filter body as the action part with the output end of the actuator, 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 setting of multiple unfolded positions allows the filter element to have multiple different positions relative to the air outlet, which can meet different usage requirements and has greater flexibility in use.

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

[0026] The water retaining element is used to be fixed on the air inlet, and the first end of the filter element is movably mounted on the water retaining element and is rotatable relative to the water retaining element;

[0027] When the filter element is in the first working state, along the thickness direction of the filter element, the distance that the filter element extends out of the air inlet is not greater than the distance that the water retaining element extends out of the air inlet.

[0028] In this solution, the water retaining element mainly responds to the water droplets that have already formed. The setting of the thickness relationship between the filter element and the water retaining element is conducive to ensuring that when the water droplets fall on the thickness of the water retaining strip, they will not directly cross the water retaining element, but will be able to slide down along the extension direction of the water retaining element. In addition, the distance that the filter element extends out of the air inlet is not greater than the distance that the water retaining element extends out of the air inlet, which can reduce the surface area of ​​the filter element in contact with the water droplets dripping from above, thereby reducing the risk of water droplets being inhaled.

[0029] Preferably, the water retaining element is circumferentially arranged outside the filter element, and the shape of the water retaining element is adapted to the shape of the first end of the filter element;

[0030] And / or, the water retaining element is an annular structure, and a central angle of the water retaining element is not less than 180°.

[0031] In this solution, the above-mentioned structural setting is adopted, and the water retaining element can reliably play a role in dealing with water droplets without affecting the state switching of the filter element. In addition, the central angle of the water retaining element is not less than 180°. When the water droplets sliding down from the water retaining element are separated from the end of the water retaining element, the gravity acceleration of the water droplets is tangential to or away from the air inlet, making it easier for the water droplets to slide down, thereby reducing the water droplets entering the filter element or the air inlet.

[0032] Preferably, both ends of the water retaining element in the extension direction have chamfered angles extending in a direction away from the filter element.

[0033] In the present solution, the above-mentioned structural setting is adopted, and the ends of both sides of the water retaining element have a chamfer angle facing outward. Compared with the flat plane, the surface curvature of the chamfer angle changes more greatly, which reduces the adhesion of water droplets on the surface, making it easier to slide off, further reducing the water droplets entering the filter element or the air inlet.

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

[0035] Wherein, when the filter element is in the first working state, the rotating element can rotate circumferentially relative to the filter element in the plane where the filter element is located;

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

[0037] Preferably, both ends of the rotating element are arc structures.

[0038] In this solution, the above-mentioned structural setting 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. A coil is arranged inside the rotating element, and the water retaining element is arranged with or is a permanent magnet. When the rotating element starts to rotate around the filter element, the coil inside it will cut the magnetic flux lines together, and an induced current will be generated due to the change in magnetic flux. When the induced current passes through the resistance wire, due to the existence of resistance, the electrical energy is converted into heat energy, which can increase the temperature of the rotating element, so that the filter element can be better defrosted.

[0039] Preferably, the rotating element and the filter element are arranged concentrically, along the thickness direction of the filter element, the rotating element comprises a first rotating part and a second rotating part connected to each other, 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 form a cavity, the first rotating part and the second rotating part are both provided with the conducting wire, and the resistance wire is provided 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 retaining element.

[0041] In this solution, the above-mentioned structure is adopted, and the first rotating part and the second rotating part form a cavity, which is conducive to saving materials and reducing the weight of the rotating element, thereby helping to reduce the weight of the refrigerator filter device. In addition, the resistance wire is arranged in the second rotating part, and the second rotating part fits the surface of the filter element, which is conducive to better transferring heat to the filter element and defrosting the filter element.

[0042] The present invention further provides a refrigerator, comprising a fan and an air inlet back plate, wherein the air inlet back plate is provided with an air inlet for the fan, and the refrigerator further comprises the above-mentioned refrigerator filter device;

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

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

[0045] Wherein, when the refrigerator is in a 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 includes an evaporator, wherein the evaporator is located upstream of the fan.

[0048] In this solution, the actuator assembly is installed on the air inlet back plate, and no other structure is needed to install the actuator assembly, which is conducive to simplifying the structure of the refrigerator and improving space utilization. In addition, the evaporator is located upstream of the fan, and the air flow passes through the evaporator for cooling, and then enters the fan through the air inlet to be transported to all directions of the refrigerator body. The evaporator is far away from the bottom water receiving box, which is conducive to improving the situation of ice forming in the water receiving box.

[0049] The positive and progressive effects of the present invention are:

[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. Wherein, 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, thereby reducing 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, and can reduce the water vapor in the air duct. Wherein, the filter element mainly responds to the water vapor in the air. The water vapor condenses, sweeps, and gathers on the surface of the filter element, and can be separated from the filter element under the action of gravity, so as to fall to the water receiving box at the bottom and then be discharged through the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a schematic diagram of the structure of a refrigerator according to Embodiment 1 of the present invention.

[0052] Figure 2 This is a partial structural schematic diagram of a refrigerator filter device according to Example 1 of the present invention.

[0053] Figure 3 This is another partial structural schematic diagram of the refrigerator filter device of Example 1 of the present invention.

[0054] Figure 4 This is a schematic diagram of the structure of a refrigerator according to Embodiment 2 of the present invention.

[0055] Figure 5 This is a schematic diagram of the partial structure of the refrigerator according to Embodiment 2 of the present invention.

[0056] Figure 6 This is a partial structural schematic diagram of a refrigerator filter device according to Embodiment 2 of the present invention.

[0057] Figure 7 This is another partial structural schematic diagram of the refrigerator filter device according to Example 2 of the present invention.

[0058] Figure 8 This is another partial structural schematic diagram of the refrigerator filter device according to Example 2 of the present invention, in which a rotating element is shown.

[0059] Fig. 9 This is another partial structural schematic diagram of the refrigerator filter device according to Example 2 of the present invention, which shows a schematic diagram of the internal structure of the rotating element.

[0060] Description of reference numerals:

[0061] 1 Air Inlet

[0062] 2 Filtration device

[0063] 10 Filter elements

[0064] 101 filter holes

[0065] 102 filter body

[0066] 103 connection part

[0067] 20 Actuator assembly

[0068] 201 Actuator

[0069] 30 Water retaining element

[0070] 301 magnet negative pole

[0071] 302 magnet positive pole

[0072] 40 Rotating shafts

[0073] 50 Rotating Elements

[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 Fan

[0082] 4 air inlet back panel

[0083] 5. Evaporator DETAILED DESCRIPTION

[0084] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0085] Example 1

[0086] like Figures 1 to 3 As shown, this embodiment provides a refrigerator filter device 2, which is used to be arranged at the air inlet 1 of the fan 3, and the filter device 2 includes a filter element 10 and an actuating assembly 20. A filter hole 101 is provided on the filter element 10, which is used to be movably installed at the air inlet 1, and the filter hole 101 can be connected to the air inlet 1. The actuating assembly 20 can act on the filter element 10 so that the filter element 10 can 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 the 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 the 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 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. Wherein, when the filter element 10 is in the second working state, the filter element 10 can be opened to a larger position relative to the air inlet 1 of the fan 3, which can reduce the resistance, thereby reducing 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 is closed to a smaller position 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. Wherein, the filter element 10 mainly responds to the water vapor in the air, and the water vapor condenses, sweeps, and gathers on the surface of the filter element 10, and can be separated from the filter element 10 under the action of gravity, so as to fall to the water receiving box at the bottom and then be discharged through the pipeline.

[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 received in the water receiving box, and then be discharged through the pipe.

[0089] Among them, the first value range of the first angle and the value range of the second angle are not specifically limited here. Under the condition of not interfering with the internal structure of the refrigerator, the first value range and the second value range can be flexibly set according to actual needs. For example, the first value range of the first angle can be 0 to 15°, and the second value range of the second angle is greater than 15° and less than or equal to 60°. As a preferred setting method, 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] Among them, when the filter element 10 is in the first working state, the filter element 10 is covered on 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 of the fan 3. The filter element 10 can more effectively block the defrost 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 on the air inlet path, the filter element 10 does not block the air inlet 1 at all, which is equivalent to the filter element 10 being opened to the maximum position relative to the air inlet 1 of the fan 3, which can minimize the resistance, thereby further reducing the influence of the filter element 10 on the air volume, which is conducive to ensuring the normal refrigeration of the refrigerator, and then to ensuring the efficiency of the fan.

[0091] In addition, in order to ensure that the filter element 10 can function when needed, the portion of the filter element 10 covering the air inlet 1 extends out of the air inlet 1 along the circumferential direction. Equivalently, if the portion 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 portion 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 is understood that the filter element 10 has multiple filter holes 101 evenly distributed on the part covering the air inlet 1, and the filter holes 101 are in the shape of a hexagon, and the height of the hexagon is greater than the width. Among them, arranging the filter holes 101 in 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. 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 water vapor sweeping down along the height side.

[0093] It should be noted that, in other alternative implementations, according to actual design requirements, the shape of the filter hole 101 may also be set to other shapes, such as a circle.

[0094] Reference Figures 1 to 3 It is 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 to rotate relative to the air inlet 1, and the output end of the actuating assembly 20 is used to act 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 drives the filter element 10 to achieve the state switching of the filter element 10, which is convenient to operate and easy to implement.

[0095] Furthermore, 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 an annular structure and is used to adapt to the shape of the air inlet 1, the first end of the filter body 102 is used to rotate relative to the air inlet 1, the connecting portion 103 is arranged at the second end of the filter body 102 and is used to be arranged outside the air inlet 1, wherein the output end of the actuator 201 is used to act on the connecting portion 103.

[0096] Among them, in this embodiment, the actuator 201 is a motor, and the output end of the motor acts on the connecting part 103, which can push the connecting part 103 or pull back the connecting part 103 relative to the air inlet 1. In this process, the first end of the filter body 102 can be driven to rotate around the air inlet 1 through the connecting part 103.

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

[0098] In a preferred configuration, 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 multiple unfolded positions relative to the air inlet 1. When the filter element 10 is in different unfolded positions, the angles enclosed by the filter element 10 and the air inlet 1 are different.

[0099] With such a configuration, the actuator 201 can realize the automatic switching of the state of the filter element 10, which is more convenient to operate and can also 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 action site with the output end of the actuator 201, 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 setting of multiple unfolded positions allows the filter element 10 to have multiple different positions relative to the air outlet, which can meet different usage requirements and has greater flexibility in use.

[0100] like Figures 1 to 3As shown, the filter device 2 further includes a water retaining element 30, which is disposed at the first end of the filter element 10 and located at the top of the filter element 10. The water retaining element 30 is used to be fixed to the air inlet 1, and the first end of the filter element 10 is movably mounted on the water retaining element 30 and is rotatable relative to the water retaining element 30. When the filter element 10 is in the first working state, along the thickness direction of the filter element 10, the distance that the filter element 10 extends out of the air inlet 1 is not greater than the distance that the water retaining element 30 extends out of the air inlet 1.

[0101] Here, the water retaining element 30 mainly responds to the water droplets that have already formed, and the setting of the thickness relationship between the filter element 10 and the water retaining element 30 is conducive to ensuring that when the water droplets fall on the thickness of the water retaining strip, they will not directly pass over the water retaining element 30, but can slide down along the extension direction of the water retaining element 30. In addition, the distance that the filter element 10 extends out of the air inlet 1 is not greater than the distance that the water retaining element 30 extends out of the air inlet 1, which can reduce the surface area of ​​the filter element 10 in contact with the water droplets dripping from above, thereby reducing the risk of water droplets being inhaled.

[0102] It should be noted that, according to the raindrop spectrum and experimental results, it can be determined that the thickness of the water retaining element 30 is not less than 3 mm, and accordingly, the thickness of the filter element 10 is not more than 3 mm.

[0103] As a preferred setting, Figures 1 to 3 As shown, the water retaining element 30 is circumferentially arranged outside the filter element 10, and the shape of the water retaining element 30 is adapted to the shape of the first end of the filter element 10. In this way, the water retaining element 30 can reliably function to deal with water drops without affecting the state switching of the filter element 10.

[0104] As another preferred configuration, Figures 1 to 3 As shown, the filter element 10 is connected to the water retaining element 30 via a rotating shaft 40 , so that the filter element 10 can be rotated or turned over relative to the water retaining element 30 .

[0105] Optionally or alternatively, the water retaining element 30 is an annular structure, and the central angle of the water retaining element 30 is not less than 180°. Wherein, the central angle of the water retaining element 30 is not less than 180°, and when the water droplets sliding down from the water retaining element 30 are separated from the end of the water retaining element 30, the gravity acceleration of the water droplets is tangential to the air inlet 1 or away from the air inlet 1, making it easier for the water droplets to slide down, thereby reducing the water droplets entering the filter element 10 or the air inlet 1.

[0106] like Figure 2 and Figure 3As shown, both ends of the water retaining element 30 in the extension direction have chamfers extending in the direction away from the filter element 10. In this way, both ends of the water retaining element 30 have chamfers facing outwards, and the surface curvature of the chamfers changes more greatly compared to the flat surface, so that the adhesion of water droplets on the surface is reduced, making it easier to slide off, further reducing the water droplets entering the filter element 10 or the air inlet 1.

[0107] like Figure 1 and Figure 2 As shown, this embodiment further provides a refrigerator, the refrigerator comprises a fan 3, an air inlet back plate 4 and the above refrigerator filter device 2, 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 a first working state; and when the refrigerator is in the refrigeration mode, the filter element 10 is in a second working state.

[0108] like Figure 2 As shown, as a preferred arrangement, the actuator assembly 20 is installed on the air inlet back plate 4. The actuator assembly 20 is installed on the air inlet back plate 4, and no other structure is required to install the actuator assembly 20, which is beneficial to simplifying the structure of the refrigerator and improving space utilization.

[0109] like Figure 1 As shown, as another preferred arrangement, the refrigerator further includes an evaporator 5, which is located upstream of the fan 3. The evaporator 5 is located upstream of the fan 3, and the airflow is cooled by the evaporator 5, and then enters the fan 3 through the air inlet 1 to be transported to all directions of the refrigerator body. The evaporator 5 is far away from the bottom water receiving box, which is conducive to improving the situation of ice forming in the water receiving box.

[0110] The refrigerator provided in this embodiment is provided with the refrigerator filter device 2. By operating the actuating assembly 20, when the refrigerator is in the refrigeration mode, the filter element 10 is in the second working state, and when the refrigerator is in the defrosting mode, the filter element 10 is in the first working state. 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 to reduce resistance, thereby reducing 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 is covered on 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. The filter element 10 can effectively block the defrosting water blown by the wind and reduce the water vapor in the air duct. The filter element 10 mainly responds to the water vapor in the air. The water vapor condenses, sweeps, and gathers on the surface of the filter element 10, and can be separated from the filter element 10 under the action of gravity, so as to fall to the water receiving box at the bottom and then be 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 Example 1, and the difference mainly lies in that the refrigerator filter device 2 in this embodiment further includes a rotating element 50. Specifically, the rotating element 50 is arranged on the side of the filter element 10 away from the air inlet 1, and the rotating element 50 is attached to the filter element 10 on the side facing the filter element 10. Among them, 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. Among them, when the rotating element 50 rotates, it can sweep the surface of the filter element 10, so that the surface of the filter element 10 can be physically defrosted.

[0113] That is to say, compared with Embodiment 1, the refrigerator filter device 2 in this embodiment is provided with an automatic defrosting function.

[0114] As a preferred setting, Figures 5 to 9 As shown, the water retaining element 30 is a permanent magnet, a coil and a wire 70 for electrically connecting to the coil are embedded in the rotating element 50, and optionally or alternatively, a resistance wire 80 is provided at one 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. Fig. 9 The conductive wire 70 and the resistance wire 80 are schematically shown by dashed lines.

[0115] In this configuration, the rotating element 50 is provided with a coil inside, and the water retaining element 30 is provided with or is a permanent magnet. When the rotating element 50 starts to rotate around the filter element 10, the coil inside it will cut the magnetic flux lines together, and an induced current will be generated due to the change of magnetic flux. When the induced current passes through the resistance wire 80, due to the existence of the resistance, the electrical energy is converted into heat energy, which can increase the temperature of the rotating element 50, so that the filter element 10 can be defrosted better.

[0116] In other alternative embodiments, the water retaining element 30 may also be configured to be arranged with a permanent magnet.

[0117] In order to realize the rotation of the rotating element 50, as a preferred configuration, Figures 5 to 7 As shown, a driving motor 60 is disposed at one end of the filter element 10 facing the rotating element 50 , and a mounting hole 504 for mounting and acting on the output end of the driving motor 60 is correspondingly disposed on the rotating element 50 .

[0118] like Figures 4 to 9As shown, the rotating element 50 and the filter element 10 are arranged concentrically. Along the thickness direction of the filter element 10, the rotating element 50 includes a first rotating part 501 and a second rotating part 502 connected to each other, and the second rotating part 502 is located between the first rotating part 501 and the filter element 10. 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 provided in the second rotating part 502. Among them, the first rotating part 501 and the second rotating part 502 form a cavity 503, which is conducive to saving materials and reducing the weight of the rotating element 50, and further conducive to reducing 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 conducive to better transferring heat to the filter element 10 and defrosting the filter element 10.

[0119] Specifically to this embodiment, Figures 4 to 9 As shown, the length h of the first rotating portion 501 is smaller than the length H of the second rotating portion 502 .

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

[0121] As a preferred setting, Figures 4 to 6 As shown, 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 retaining element 30. Wherein, as another preferred setting mode, 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 retaining element 30. Wherein, from the perspective of magnetic flux, in order to obtain a larger magnetic flux, the larger the thickness W of the rotating element 50 is set, the more conducive to the magnetic flux. However, from the perspective of the water retaining effect, the thickness W of the rotating element 50 should not be too large. On this basis, making the sum of the thickness W of the rotating element 50 and the thickness of the filter element 10 equal to the thickness of the water retaining element 30 can balance the magnetic flux and the water retaining effect, so that both can reach a higher level.

[0122] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A refrigerator filter device, used to be arranged at the air inlet of a fan, characterized in that: The filter unit includes: A filter element having a filter hole thereon, adapted to be movably mounted at the air inlet, wherein the filter hole can be communicated with the air inlet; and an actuating assembly capable of acting on the filter element so that the filter element can move relative to the air inlet and can switch between a first working state and a second working state; Wherein, when the filter element is in the first working state, the filter element and the end surface of the air inlet form a first angle, and the value range of the first angle is a first value range; When the filter element is in the second working state, the filter element and the end surface of the air inlet form a second angle, and the value range of the second angle is a second value range; The maximum value of the first angle is smaller than the minimum value of the second angle.

2. The refrigerator filter device according to claim 1, characterized in that: When the filter element is in the first working state, the filter element is used to cover the air inlet, and the first angle is 0; When the filter element is in the second working state, the filter element is removed from the air inlet.

3. The refrigerator filter device according to claim 1, characterized in that: The filter element has a first end and a second end along the extension 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; And / or, a plurality of the filter holes are evenly distributed on the filter element, and the filter holes are in a hexagonal shape, and the height of the hexagon is greater than the width.

4. The refrigerator filter device according to claim 3, characterized in that: The actuating assembly comprises an actuator, the filter element comprises a filter body and a connecting portion, the filter body is an annular structure and is used to match 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, wherein the output end of the actuator is used to act on the connecting portion; and / or, 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; Wherein, when the filter element is in different unfolded positions, the angles formed by the filter element and the air inlet are different.

5. The refrigerator filter device according to claim 3, characterized in that: The filter device further comprises a water retaining element, wherein the water retaining element is arranged at the first end of the filter element and located at the top of the filter element; The water retaining element is used to be fixed on the air inlet, and the first end of the filter element is movably mounted on the water retaining element and is rotatable relative to the water retaining element; When the filter element is in the first working state, along the thickness direction of the filter element, the distance that the filter element extends out of the air inlet is not greater than the distance that the water retaining element extends out of the air inlet.

6. The refrigerator filter device according to claim 5, characterized in that: The water retaining element is circumferentially arranged outside the filter element, and the shape of the water retaining element is adapted to the shape of the first end of the filter element; And / or, the water retaining element is an annular structure, and the central angle of the water retaining element is not less than 180°; Preferably, both ends of the water retaining element in the extension direction have chamfered angles extending in a direction away from the filter element.

7. The refrigerator filter device according to claim 6, characterized in that: The filter device further comprises a rotating element, which is arranged on a side of the filter element away from the air inlet, and a side of the rotating element facing the filter element is attached to the filter element; Wherein, when the filter element is in the first working state, the rotating element can rotate circumferentially relative to the filter element in the plane where the filter element is located; Preferably, the water retaining element is or is arranged with a permanent magnet, a coil and a wire for being electrically connected to the coil are embedded in the rotating element; or, the water retaining element is or is arranged with a permanent magnet, a coil and a wire for being electrically connected to the coil are embedded in the rotating element, a resistance wire is arranged at one end of the rotating element facing the filter element, and the resistance wire is electrically connected to the wire; Preferably, both ends of the rotating element are arc structures.

8. The refrigerator filter device according to claim 7, characterized in that: The rotating element and the filter element are arranged concentrically. Along the thickness direction of the filter element, the rotating element includes a first rotating part and a second rotating part connected to each other, 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 form a cavity. The first rotating part and the second rotating part are both provided with the conducting wire, and the resistance wire is provided 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, 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 retaining element.

9. A refrigerator, comprising a fan and an air inlet back plate, wherein the air inlet back plate is provided with an air inlet for the fan, characterized in that: The refrigerator further comprises a refrigerator filter device as claimed in any one of claims 1 to 8; The refrigerator has a refrigeration mode and a defrosting mode; Wherein, when the refrigerator is in defrosting mode, the filter element is in the first working state; Wherein, when the refrigerator is in a refrigeration mode, the filter element is in the second working state.

10. The refrigerator according to claim 9, characterized in that: The actuating assembly is mounted on the air inlet back plate; And / or, the refrigerator further includes an evaporator, wherein the evaporator is located upstream of the fan.

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