Refrigerator

Abstract

The utility model discloses a refrigerator which comprises a refrigerator body, a storage chamber, an air duct and an evaporator chamber are arranged in the refrigerator body, and the air duct is respectively communicated with the evaporator chamber and the storage chamber. The fan is arranged in the air duct, and an air outlet is formed in the fan; the shielding part is arranged in the air duct, and the shielding part can move between a first position and a second position; when the shielding piece is located at the first position, the air outlet is closed, communication between the air duct and the evaporator bin is cut off, and when the shielding piece is located at the second position, the air outlet is opened. The driving part is arranged between the shielding part and the inner wall of the air duct, the driving part is connected with the shielding part and / or the inner wall, the driving part drives the shielding part to move, and the driving part is a memory alloy part. According to the refrigerator, the memory alloy part deforms according to temperature changes to drive the shielding part to move, cost is low, reliability is high, and energy consumption is avoided.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, and in particular to a refrigerator. Background Technology

[0002] After prolonged use, frost will build up on the surface of the evaporator inside the refrigerator, reducing its cooling performance. At this point, the refrigerator will stop cooling and activate the heater to defrost. During defrosting, the hot air generated by the heater will also enter the storage compartment through the refrigerator's fan and air ducts, raising the temperature inside the storage compartment and reducing its effectiveness in preserving food, thus affecting the user's experience.

[0003] In related technologies, a motor-driven shielding structure is used to shield the fan and prevent hot air from flowing into the storage chamber. However, using a motor drive is costly, unreliable, and increases energy consumption. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a refrigerator that uses a shape-memory alloy component to deform and drive the movement of a shielding component according to temperature changes, resulting in low cost, high reliability, and energy efficiency by utilizing the heat generated during defrosting.

[0005] The refrigerator according to a first aspect of the present invention includes:

[0006] The housing includes a storage chamber, an air duct, and an evaporator compartment, with the air duct communicating with both the evaporator compartment and the storage chamber.

[0007] A fan is installed inside the air duct and has an air outlet.

[0008] The refrigerator also includes:

[0009] A shielding component is disposed within the air duct and is movable between a first position and a second position;

[0010] When the shielding member is in the first position, the air outlet is closed, and the connection between the air duct and the evaporator compartment is interrupted; when the shielding member is in the second position, the air outlet is open.

[0011] A driving component is disposed between the shielding component and the inner wall of the air duct. The driving component is connected to the shielding component and / or the inner wall. The driving component drives the shielding component to move. The driving component is a shape memory alloy component.

[0012] According to the refrigerator of this invention, the driving component drives the shielding component to move between a first position and a second position by means of temperature changes within the air duct, without consuming energy. Furthermore, the driving component's movement of the shielding component is a purely mechanical structure, making it easy to use; and the driving component is a metal sheet structure, resulting in low cost and high reliability.

[0013] According to some embodiments of the present invention, the driving component includes:

[0014] A connecting segment, wherein the connecting segment is connected to the inner wall;

[0015] The first deformable segment has one end connected to the connecting segment and the other end connected to the shielding member. The first deformable segment is bendable relative to the connecting segment.

[0016] The specific advantages or beneficial effects of the above solution are as follows: The segmented design of the drive component ensures the deformation of the drive component, allowing for long-term normal operation. It also ensures the connection between the drive component and the inner wall, improving the stability of the drive component in use.

[0017] According to some embodiments of the present invention, when the shielding member is located in the first position, the first deformable segment and the connecting segment are perpendicular to each other; and / or

[0018] When the shielding member is in the second position, the first deformable segment and the connecting segment are on the same plane, or the first deformable segment is inclined relative to the connecting segment.

[0019] The specific advantages or beneficial effects of the above solution are as follows: the deformation mode of the driving component is simple, and the way the driving component drives the movement of the shielding component is also simple and easy to implement, thereby improving the convenience of use when defrosting the refrigerator.

[0020] According to some embodiments of the present invention, the driving component further includes:

[0021] The second deformable segment has one end connected to the end of the connecting segment away from the first deformable segment, and the other end connected to the shielding member. The second deformable segment is bendable relative to the connecting segment.

[0022] The specific advantages or beneficial effects of the above scheme are as follows: the first deformation section and the second deformation section jointly support the shielding component, which improves the stability of the shielding component in use.

[0023] According to some embodiments of the present invention, a groove is formed on the side of the shielding member away from the fan, and a mating member is provided on the other end of the first deformed section, the mating member fitting into the groove.

[0024] The specific advantages or beneficial effects of the above scheme are as follows: it improves the connection stability between the driving component and the shielding component, and also facilitates the stable driving of the shielding component to move during the deformation process.

[0025] According to some embodiments of the present invention, the driving component is opposite to the center of the fan.

[0026] The specific advantages or beneficial effects of the above scheme are as follows: the structure is simple and easy to implement, thereby improving installation efficiency.

[0027] According to some embodiments of this utility model, there are multiple shielding members, which are arranged along the height direction of the housing, and together cover the air outlet.

[0028] There are multiple driving components, and each of the multiple driving components drives a multiple of the shielding components to close and open the air outlet.

[0029] The specific advantages or beneficial effects of the above solution are as follows: multiple shielding components work together to close the air outlet, reduce the weight of the shielding components, facilitate the movement of the shielding components by the drive component, and improve the flexibility of the drive component.

[0030] According to some embodiments of this utility model, the movement distance of the shielding member is greater than the thickness of the fan.

[0031] The specific advantages or beneficial effects of the above scheme are as follows: it effectively ensures that when the shielding component is in the second position, the shielding component completely covers the fan, that is, the air outlet is completely closed.

[0032] According to some embodiments of this utility model, the lowest deformation temperature of the shape memory alloy part is T1, the highest deformation temperature of the shape memory alloy part is T2, and the temperature difference between T1 and T2 is... Among them, T1, T2, satisfy: =|T2-T1|, ≥5℃; and / or,

[0033] The memory alloy component is a two-way memory alloy component.

[0034] The specific advantages or beneficial effects of the above scheme are as follows: It effectively ensures that the distance the shielding component moves due to the deformation of the driving component is greater than the thickness of the fan, so that the shielding component can completely cover the fan in the first position, that is, completely block the air outlet. Furthermore, it facilitates the driving component to drive the shielding component to move back and forth between the first and second positions according to temperature changes.

[0035] The refrigerator according to a second aspect embodiment of the present invention includes:

[0036] The housing includes a storage chamber, an air duct, and an evaporator compartment, with the air duct communicating with both the evaporator compartment and the storage chamber.

[0037] A fan is installed inside the air duct and has an air outlet.

[0038] The refrigerator also includes:

[0039] A shielding component is disposed within the air duct and is movable between a first position and a second position;

[0040] When the shielding member is in the first position, the air outlet is closed, and the connection between the air duct and the evaporator compartment is interrupted; when the shielding member is in the second position, the air outlet is open.

[0041] An elastic drive structure is provided, with its two ends connected to the shielding component and the inner wall of the air duct, respectively. The elastic drive structure can be stretched and contracted to drive the shielding component to move. The elastic drive structure is a shape memory alloy component.

[0042] The specific advantages or beneficial effects of the above solution are as follows: it is easy to drive the shielding component to move between the first and second positions. Furthermore, it is easy to use, highly reliable, and energy-efficient.

[0043] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0044] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0045] Figure 1 This is a schematic diagram of a refrigerator according to an embodiment of the present utility model, with the shielding member located in the first position;

[0046] Figure 2 This is a partial schematic diagram of a refrigerator according to an embodiment of the present utility model, with the shielding member located in the first position;

[0047] Figure 3 yes Figure 2 Cross-sectional view along the CC line;

[0048] Figure 4 This is a schematic diagram of a refrigerator according to an embodiment of the present utility model, with the shielding member located in the second position;

[0049] Figure 5 This is a partial schematic diagram of a refrigerator according to an embodiment of the present utility model, with the shielding member located in the second position;

[0050] Figure 6 yes Figure 5 Cross-sectional view along the DD line;

[0051] Figure 7 This is a partial schematic diagram of a refrigerator according to the second embodiment of the present invention, with the shielding member located in the first position;

[0052] Figure 8 yes Figure 7 Cross-sectional view along the EE line;

[0053] Figure 9 This is a partial schematic diagram of a refrigerator according to the second embodiment of the present invention, with the shielding member located in the second position;

[0054] Figure 10 yes Figure 9 Cross-sectional view along the FF line;

[0055] Figure 11 This is a partial schematic diagram of a refrigerator according to the third embodiment of the present utility model, with the shielding member located in the first position;

[0056] Figure 12 yes Figure 11 Cross-sectional view along line GG in the middle;

[0057] Figure 13 This is a partial schematic diagram of a refrigerator according to the third embodiment of the present invention, with the shielding member located in the second position;

[0058] Figure 14 yes Figure 13 Cross-sectional view along line HH in the middle;

[0059] Figure 15 This is a schematic diagram of the assembly of the shielding component and the slide groove of a refrigerator according to an embodiment of the present utility model;

[0060] Figure 16 This is an assembly diagram of the fan and shielding component of a refrigerator according to the fourth embodiment of the present utility model, wherein the shielding component is located between the first position and the second position;

[0061] Figure 17 This is an assembly diagram of the fan and shielding component of a refrigerator according to the fourth embodiment of the present invention, with the shielding component located in the second position.

[0062] Figure label:

[0063] 100. Refrigerator;

[0064] 1. Housing; 11. Storage compartment; 12. Air duct; 13. Evaporator compartment; 131. Evaporator; 132. Heater;

[0065] 2. Fan; 21. Air outlet;

[0066] 3. Shielding component; 31. Slide groove; 311. First slide groove; 312. Second slide groove;

[0067] 4. Driving component; 41. Connecting section; 42. First deformation section; 43. Second deformation section; 44. Mating component;

[0068] 5. Cooling fan; 6. Condenser; 7. Fasteners. Detailed Implementation

[0069] The embodiments of this utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figures 1-17 A refrigerator 100 according to a first aspect embodiment of the present invention is described.

[0070] like Figure 1 and Figure 4 As shown, the refrigerator 100 according to the first aspect of the present invention includes a cabinet 1, a fan 2, a shielding member 3, and a driving member 4.

[0071] Specifically, the housing 1 has a storage chamber 11, an air duct 12 and an evaporator compartment 13. The air duct 12 is connected to the evaporator compartment 13 and the storage chamber 11 respectively. The fan 2 is installed in the air duct 12 and has an air outlet 21.

[0072] For example, in Figure 4 In the example, the evaporator compartment 13 is also connected to the storage compartment 11. During the cooling process of the refrigerator 100, cold air can circulate sequentially along the evaporator compartment 13, the air duct 12, and the storage compartment 11 (e.g., Figure 4 The path indicated by the middle arrow B allows for the cooling of items (such as food and drinks) in the storage compartment 11, thus enabling the refrigerator 100 to function properly.

[0073] Combination Figure 1 and Figure 4 The shielding member 3 is disposed within the air duct 12 and is movable between a first position and a second position. When the shielding member 3 is in the first position, the air outlet 21 is closed, and the connection between the air duct 12 and the evaporator compartment 13 is interrupted. When the shielding member 3 is in the second position, the air outlet 21 is open. A driving member 4 is disposed between the shielding member 3 and the inner wall of the air duct 12, and is connected to the shielding member 3 and / or the aforementioned inner wall. The driving member 4 drives the shielding member 3 to move. The driving member 4 is a shape memory alloy component.

[0074] For example, the drive component 4 can be configured in the following ways: First, the drive component 4 is connected to the shielding component 3, that is, the drive component 4 is mounted on the shielding component 3. Second, the drive component 4 is connected to the inner wall, that is, the drive component 4 is mounted on the inner wall. Third, the drive component 4 is connected to both the shielding component 3 and the inner wall, that is, the drive component 4 is simultaneously connected to both the shielding component 3 and the inner wall. This allows for flexible configuration of the shielding component 3 according to actual usage.

[0075] The driving component 4 is a shape memory alloy component, which can deform according to temperature changes. When the refrigerator 100 is cooling, the temperature inside the refrigerator 100 is low. The driving component 4 cooperates with the shielding component 3, driving the shielding component 3 to the second position. The shielding component 3 does not cover the fan 2, and the air outlet 21 of the fan 2 is open. Cold air in the evaporator compartment 13 can enter the air duct 12 from the air outlet 21 along the fan 2, and then enter the storage compartment 11 from the air duct 12 to cool the items in the storage compartment 11 (such as...). Figure 4 (As indicated by the middle arrow B).

[0076] After prolonged cooling in the refrigerator 100, frost forms on the surface of the evaporator 131 in the evaporator compartment 13. To remove the frost, the refrigerator 100 stops cooling and turns on the heater 132 in the evaporator compartment 13, raising the temperature and defrosting. The hot air generated by the heater 132 also enters the air duct 12 along the air outlet 21 of the fan 2, raising the temperature within the air duct 12. The driving component 4 gradually deforms and bends due to the temperature, driving the shielding component 3 to move closer to the fan 2. The shielding component 3 moves to its first position, covering the fan 2, thus blocking the air outlet 21 of the fan 2 and closing it. This prevents the hot air in the evaporator compartment 13 from continuing to enter the storage compartment 11 along the fan 2 and air duct 12, causing the hot air to circulate within the storage compartment 11 (e.g., Figure 1 (As shown by arrow A), this prevents the temperature in the storage compartment 11 from rising, effectively extending the storage time of items and avoiding poor food preservation due to periodic thawing and freezing. It also prevents food from sticking together, improving the user experience. Furthermore, it reduces energy consumption for cooling the storage compartment 11 during defrosting. In addition, after the frost on the surface of the evaporator 131 inside the refrigerator 100 is removed, the cooling performance inside the refrigerator 100 is improved. Moreover, the drive component 4 drives the movement of the shielding component 3 according to temperature changes; it is a purely mechanical structure, easy to use, and the deformation of the drive component 4 utilizes temperature changes during the defrosting process, consuming no energy. Furthermore, the drive component 4 is a metal sheet, resulting in low cost and high reliability.

[0077] According to the refrigerator 100 of this utility model, the driving component 4 drives the shielding component 3 to move between a first position and a second position by means of temperature changes within the air duct 12, without consuming energy. Furthermore, the driving component 4 drives the shielding component 3 to move, which is a purely mechanical structure, making it easy to use. Also, the driving component 4 is a metal sheet structure, resulting in low cost and high reliability.

[0078] According to some embodiments of this utility model, refer to Figure 2 and Figure 3 The driving component 4 includes a connecting section 41 and a first deformable section 42. The connecting section 41 is connected to the inner wall. One end of the first deformable section 42 is connected to the connecting section 41, and the other end of the first deformable section 42 is connected to the shielding component 3. The first deformable section 42 is bendable relative to the connecting section 41.

[0079] For example, in Figure 2 and Figure 3 In the example, the connecting section 41 is fixedly connected to the inner wall of the air duct 12, and the other end of the first deformable section 42 is slidably connected to the shielding member 3, that is, the other end of the first deformable section 42 can slide along the surface of the shielding member 3. During temperature changes, the first deformable section 42 can bend and deform relative to the connecting section 41.

[0080] This configuration, with the drive component 4 divided into two sections, ensures the connection between the drive component 4 and the inner wall of the air duct 12 via the connecting section 41, improving the stability of the drive component 4. It also ensures that the deformable portion of the drive component 4, namely the first deformable section 42, deforms and pushes the shielding component 3 to move between a first and a second position, allowing the drive component 4 to operate normally for an extended period. Furthermore, during defrosting, the temperature change within the evaporator chamber 13 serves as the excitation medium, enabling directional control of the shape change of the temperature-controlled drive component 4. This allows for bending and straightening at different temperatures, thereby driving the shielding component 3 to move and prevent the flow of hot air. The connecting section 41 can be fixedly connected to the inner wall of the air duct 12 via welding, clamping, or fasteners 7 (e.g., bolts).

[0081] According to some embodiments of this utility model, refer to Figure 3 , Figure 6 , Figure 16 and Figure 17 When the shielding member 3 is in the first position, the first deformable segment 42 and the connecting segment 41 are perpendicular to each other; and / or, when the shielding member 3 is in the second position, the first deformable segment 42 and the connecting segment 41 are on the same plane, or the first deformable segment 42 is inclined relative to the connecting segment 41.

[0082] For example, the drive component 4 is configured in the following ways: First, when the shielding component 3 is in the first position, the first deformable segment 42 and the connecting segment 41 are perpendicular to each other (e.g., Figure 2 , Figure 3 and Figure 17 (As shown). Second, when the shielding member 3 is in the second position, the first deformable section 42 and the connecting section 41 are on the same plane (as shown). Figure 5 and Figure 6 (as shown), or the first deformable segment 42 is inclined relative to the connecting segment 41. Third, when the shielding member 3 is in the first position, the first deformable segment 42 and the connecting segment 41 are perpendicular to each other. At the same time, when the shielding member 3 is in the second position, the first deformable segment 42 and the connecting segment 41 are on the same plane, or the first deformable segment 42 is inclined relative to the connecting segment 41.

[0083] For example, in Figure 3 and Figure 6 In the example, when the first shielding member 3 is in the first position, the air outlet 21 is completely closed, and the deformation of the driving member 4 is relatively large, with the angle between the first deformable section 42 and the connecting section 41 being 90°. During the movement of the shielding member 3 from the first position to the second position, the other end of the first deformable section 42 gradually moves along the direction close to the aforementioned inner wall. When the shielding member 3 moves to the second position, the first deformable section 42 and the connecting section 41 are on the same plane, that is, the driving member 4 is in a straightened state. During the movement of the shielding member 3 from the first position to the second position, the shielding member 3 moves along the axial direction of the fan 2.

[0084] Or Figure 16 and Figure 17 In the example, when the first shielding member 3 is in the first position, the angle between the first deformable segment 42 and the connecting segment 41 is 90°. During the movement of the shielding member 3 from the first position to the second position, the shielding member 3 moves along the axial direction of the fan 2 towards the inner wall of the duct 12, and the other end of the first deformable segment 42 moves radially along the fan 2. When the shielding member 3 moves to the second position, the first deformable segment 42 is inclined relative to the connecting segment 41.

[0085] This configuration simplifies the deformation of the drive component 4 and the movement of the shielding component 3, making it easy to implement and improving the ease of use during defrosting of the refrigerator 100. Furthermore, it allows for flexible configuration based on actual usage to meet specific needs, further enhancing the ease of setting up the drive component 4.

[0086] According to some embodiments of this utility model, refer to Figures 7-10 The driving component 4 also includes a second deformable segment 43. One end of the second deformable segment 43 is connected to the end of the connecting segment 41 that is away from the first deformable segment 42, and the other end of the second deformable segment 43 is connected to the shielding component 3. The second deformable segment 43 is bendable relative to the connecting segment 41.

[0087] For example, in Figure 8 and Figure 10In the example, the first deformable segment 42 and the second deformable segment 43 are located at the two ends of the connecting segment 41, respectively. The end of the first deformable segment 42 away from the connecting segment 41 and the end of the second deformable segment 43 away from the connecting segment 41 are connected to the shielding member 3. The second deformable segment 43 also deforms according to temperature changes. When the temperature changes, both the second deformable segment 43 and the first deformable segment 42 bend and deform in a direction away from the inner wall. With this configuration, the first deformable segment 42 and the second deformable segment 43 deform simultaneously to support the shielding member 3, which improves the stability of the shielding member 3 during movement and also improves the stability of the shielding member 3 in use. This prevents the shielding member 3 from tilting during defrosting and causing the air outlet 21 to remain open, thereby effectively ensuring the freezing effect in the storage compartment 11 during the defrosting process, so that the refrigerator 100 can be used normally for a long time.

[0088] According to some embodiments of this utility model, refer to Figure 2 and Figure 3 A groove 31 is formed on the side of the shielding member 3 away from the fan 2, and a fitting member 44 is provided on the other end of the first deformed section 42, which fits into the groove 31.

[0089] For example, in Figure 2 and Figure 3 In the example, the mating part 44 is installed within the slide groove 31, and the mating part 44 moves within the slide groove 31. This arrangement allows the mating part 44 to engage with the slide groove 31, enabling the other end of the first deformable segment 42 to slide against the shielding part 3, improving the connection stability between the driving part 4 and the shielding part 3, and facilitating the stable driving of the shielding part 3 by the driving part 4 during deformation. Furthermore, the mating part 44 and the slide groove 31 are simple to assemble, improving installation efficiency.

[0090] Among them, such as Figure 7 and Figure 8 As shown, two grooves 31 are formed on the side of the shielding member 3 away from the fan 2. The two grooves 31 are arranged opposite each other. A mating member 44 is also provided on the other end of the second deformable section 43. The mating member 44 on the other end of the first deformable section 42 fits into one of the grooves 31, and the mating member 44 on the other end of the second deformable section 43 fits into the other groove 31. During temperature changes, the mating member 44 on the first deformable section 42 and the mating member 44 on the second deformable section 43 slide simultaneously in different grooves 31, thereby improving the stability of the shielding member 3 in use.

[0091] Optionally, refer to Figure 15 The slide 31 includes a first slide 311 or a second slide 312. When the first slide 311 extends in a radial direction perpendicular to the fan 2, and the shielding member 3 is in the second position, the first deformable section 42 and the connecting section 41 are on the same plane (e.g., Figure 6(As shown). When the second groove 312 extends along the radial direction of the fan 2, the first deformable section 42 extends obliquely relative to the connecting section 41 when the shielding member 3 is in the second position. This allows for flexible configuration according to different situations, improving the adaptability of the drive member 4.

[0092] According to some embodiments of this utility model, refer to Figures 11-14 The drive component 4 is opposite to the center of the fan 2. For example, in Figures 11-14 In the example, a driving component 4 and a shielding component 3 are provided. The driving component 4 drives the shielding component 3 to move along the central axis of the fan 2. This configuration is simple in structure and easy to implement, thereby improving installation efficiency. It should be noted that when the driving component 4 is set opposite to the center of the fan 2, the driving component 4 includes a first deformable section 42, a second deformable section 43, and a connecting section 41, which prevents the shielding component 3 from tilting during movement.

[0093] According to some embodiments of this utility model, refer to Figure 2 and Figure 5 There are multiple shielding components 3, and the multiple shielding components 3 are arranged along the height direction of the box body 1 (e.g., Figure 2 As shown in the vertical direction, multiple shielding elements 3 are arranged to cover the air outlet 21. Multiple driving elements 4 drive multiple shielding elements 3 to close and open the air outlet 21. In the description of this utility model, "multiple" means two or more.

[0094] For example, in Figure 2 and Figure 5 In the example, there are two shielding components 3 arranged vertically, and two driving components 4 connected to the two shielding components 3 respectively, meaning there is a one-to-one correspondence between the two shielding components 3 and the two driving components 4. This arrangement allows multiple shielding components 3 to work together to close the air outlet 21, reducing the weight of the shielding components 3, facilitating the movement of the shielding components 3 by the driving components 4, and improving the flexibility of the driving components 4. However, this is not the only possibility. It should be noted that the number and arrangement of the driving components 4 and shielding components 3 can be tailored to specific needs based on actual usage. Specifically, when there are multiple shielding components 3 and multiple driving components 4, the driving component 4 can be two-segmented (i.e., including a connecting segment 41 and a first deformable segment 42) or three-segmented (i.e., including a connecting segment 41, a first deformable segment 42, and a second deformable segment 43).

[0095] According to some embodiments of this utility model, the movement distance of the shielding member 3 is greater than the thickness of the fan 2. For example, in Figure 2 and Figure 5In the example, the distance that the shielding member 3 moves from the first position to the second position along the left and right direction is greater than the thickness of the fan 2, thereby effectively ensuring that when the shielding member 3 is in the second position, the shielding member 3 completely covers the fan 2, that is, the air outlet 21 is completely closed. In this way, during the defrosting process, the amount of hot air entering the storage chamber 11 is effectively reduced, thereby extending the food preservation time.

[0096] According to some embodiments of this utility model, the lowest deformation temperature of the shape memory alloy part is T1, the highest deformation temperature of the shape memory alloy part is T2, and the temperature difference between T1 and T2 is... Among them, T1, T2, satisfy: =|T2-T1|, ≥5℃; and / or, the shape memory alloy parts are two-way shape memory alloy parts.

[0097] For example, shape memory alloys can be configured in the following ways: First, the lowest deformation temperature of the shape memory alloy component is T1, the highest deformation temperature is T2, and the temperature difference between T1 and T2 is... Among them, T1, T2, satisfy: =|T2-T1|, ≥5℃. Second, the shape memory alloy parts are two-way shape memory alloy parts. Third, the minimum deformation temperature of the shape memory alloy parts is... =|T2-T1|, ≥5℃. Furthermore, the shape memory alloy parts are two-way shape memory alloy parts.

[0098] When the temperature of the shape memory alloy part (i.e., the driving part 4) is lower than T1, the first deformation section 42 and the connecting section 41 of the driving part 4 are in the same plane, the driving part 4 is in a straight state, or the first deformation section 42 is tilted relative to the connecting section 41, the shielding part 3 is in the first position, the air outlet 21 is open, and the refrigerator 100 is in the cooling condition.

[0099] When the temperature of the shape memory alloy component is between T1 and T2, and the temperature of the drive component 4 is higher than T1, the drive component 4 begins to deform gradually due to heat. The first deformed segment 42 bends relative to the connecting segment 41, that is, the angle between the first deformed segment 42 and the connecting segment 41 gradually decreases. When the temperature of the drive component 4 reaches T2, the first deformed segment 42 is perpendicular to the connecting segment 41, the shielding component 3 is in the second position, the air outlet 21 is closed, and the refrigerator 100 is in defrosting mode.

[0100] When the temperature of the shape memory alloy part is higher than T2, the drive part 4 is stable in a bent state, that is, the first deformation section is stable in a state perpendicular to the connecting section 41.

[0101] exist When the temperature is <5℃, the distance that the deformation of the driving component 4 drives the shielding component 3 to move is less than the thickness of the fan 2. Therefore, the shielding component 3 cannot completely cover the fan 2 in the first position, that is, it cannot completely cover the air outlet 21. Therefore, when satisfy: At ≥5℃, it effectively ensures that the distance the drive component 4 deforms and drives the shielding component 3 to move is greater than the thickness of the fan 2, so that the shielding component 3 can completely cover the fan 2 in the first position, that is, completely block the air outlet 21. Among them, To meet the minimum temperature difference during the movement of the shielding component 3.

[0102] The two-way shape memory alloy component deforms when the temperature rises and returns to its original shape when the temperature drops, thereby improving the performance of the shape memory alloy component (i.e., the driving component 4) and facilitating the driving component 4 to drive the shielding component 3 to reciprocate between the first and second positions according to temperature changes. The refrigerator 100 also includes a cooling fan 5 and a condenser 6 to ensure normal operation of the refrigerator 100.

[0103] like Figure 1 and Figure 4 As shown, the refrigerator 100 according to the second aspect embodiment of the present invention includes a cabinet 1, a fan 2, a shielding member 3, and an elastic drive structure (not shown in the figure).

[0104] Specifically, the housing 1 has a storage chamber 11, an air duct 12, and an evaporator compartment 13, with the air duct 12 connected to both the evaporator compartment 13 and the storage chamber 11. A fan 2 is installed inside the air duct 12 and has an air outlet 21.

[0105] For example, in Figure 4 In the example, the evaporator compartment 13 is also connected to the storage compartment 11. During the cooling process of the refrigerator 100, cold air can circulate sequentially along the evaporator compartment 13, the air duct 12, and the storage compartment 11 (e.g., Figure 4 The path indicated by the middle arrow B allows for the cooling of items (such as food and drinks) in the storage compartment 11, thus enabling the refrigerator 100 to function properly.

[0106] Combination Figure 1 and Figure 4 The shielding member 3 is disposed within the air duct 12 and is movable between a first position and a second position. When the shielding member 3 is in the first position, the air outlet 21 is closed, and the connection between the air duct 12 and the evaporator compartment 13 is interrupted. When the shielding member 3 is in the second position, the air outlet 21 is open. The two ends of the elastic drive structure are connected to the shielding member 3 and the inner wall of the air duct 12, respectively. The elastic drive structure can stretch and contract to drive the movement of the shielding member 3. The elastic drive structure is a shape memory alloy component.

[0107] For example, the flexible drive structure can be configured in the following ways: First, the flexible drive structure is connected to the shielding member 3, meaning the flexible drive structure is mounted on the shielding member 3. Second, the flexible drive structure is connected to the inner wall, meaning the flexible drive structure is mounted on the inner wall. Third, the flexible drive structure is connected to both the shielding member 3 and the inner wall, meaning the flexible drive structure is connected to both the shielding member 3 and the inner wall. This allows for flexible configuration of the shielding member 3 according to actual usage.

[0108] The elastic drive structure is made of shape memory alloy, which can deform according to temperature changes. When the refrigerator 100 is cooling, the temperature inside the air duct 12 is low. The elastic drive structure compresses, driving the shielding member 3 to move to the second position. The shielding member 3 no longer covers the fan 2, and the air outlet 21 of the fan 2 is open. Cold air from the evaporator compartment 13 can enter the air duct 12 from the air outlet 21 along the fan 2, and then enter the storage compartment 11 from the air duct 12 to cool the items in the storage compartment 11 (such as...). Figure 4 (As indicated by arrow B). When the refrigerator 100 is defrosting, the refrigerator 100 stops cooling and turns on the heater 132 in the evaporator compartment 13. The temperature in the air duct 12 is high, the elastic drive structure stretches, and the shielding member 3 moves to the first position. The shielding member 3 covers the fan 2, that is, the shielding member 3 blocks the air outlet 21 of the fan 2, so that the shielding member 3 closes the air outlet 21 of the fan 2, allowing hot air to flow in the storage compartment 11 (e.g., ...). Figure 1 (As shown by arrow A), this reduces the amount of internal hot air entering the storage chamber 11. This design allows the elastic drive structure to deform easily and to a large extent, facilitating the movement of the shielding member 3 between the first and second positions. Furthermore, the purely mechanical structure is easy to use, highly reliable, and consumes no energy due to temperature changes during defrosting.

[0109] Other configurations and operations of the refrigerator 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0110] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0111] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0112] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A refrigerator, comprising: a cabinet, having a storage chamber, an air duct and an evaporator chamber in the cabinet, the air duct being in communication with the evaporator chamber and the storage chamber respectively; a fan, disposed in the air duct, the fan having an air outlet; characterized in that the refrigerator further comprises: a shielding member, disposed in the air duct, the shielding member being movable between a first position and a second position; wherein the air outlet is closed when the shielding member is in the first position, and the communication between the air duct and the evaporator chamber is interrupted, the air outlet is opened when the shielding member is in the second position; a driving member, disposed between the shielding member and an inner wall of the air duct, the driving member being connected with the shielding member and / or the inner wall, the driving member driving the shielding member to move, the driving member being a memory alloy member.

2. The refrigerator according to claim 1, characterized in that, the driving member comprises: a connecting segment, connected with the inner wall; a first deformed segment, one end of the first deformed segment being connected with the connecting segment, the other end of the first deformed segment being connected with the shielding member, the first deformed segment being bendable relative to the connecting segment.

3. The refrigerator according to claim 2, characterized in that, the first deformed segment is perpendicular to the connecting segment when the shielding member is in the first position; and / or the first deformed segment and the connecting segment are in the same plane, or the first deformed segment is inclined relative to the connecting segment when the shielding member is in the second position.

4. The refrigerator according to claim 2, characterized in that, the driving member further comprises: a second deformed segment, one end of the second deformed segment being connected with the connecting segment away from the first deformed segment, the other end of the second deformed segment being connected with the shielding member, the second deformed segment being bendable relative to the connecting segment.

5. The refrigerator according to claim 2, characterized in that, a sliding groove is formed on a side surface of the shielding member away from the fan, the other end of the first deformed segment is provided with a matching member, the matching member being matched in the sliding groove.

6. The refrigerator according to claim 1, characterized in that, the driving member is opposite to the center of the fan.

7. The refrigerator according to claim 1, characterized in that, a plurality of the shielding members are arranged along the height direction of the cabinet, the plurality of the shielding members collectively covering the air outlet, a plurality of the driving members respectively drive the plurality of the shielding members to close and open the air outlet.

8. The refrigerator according to claim 1, characterized in that, the movement distance of the shielding member is greater than the thickness of the fan.

9. The refrigerator according to any one of claims 1-8, characterized in that, The minimum deformation temperature of the memory alloy piece is T1, the maximum deformation temperature of the memory alloy piece is T2, the temperature difference between the T1 and the T2 is Wherein, the T1, T2, Satisfy: =|T2-T1|, ≥5℃; and / or, the memory alloy member is a double-path memory alloy member. 10.A refrigerator, comprising: a cabinet, having a storage chamber, an air duct and an evaporator chamber in the cabinet, the air duct being in communication with the evaporator chamber and the storage chamber respectively; a fan, disposed in the air duct, the fan having an air outlet; characterized in that the refrigerator further comprises: a shielding member, disposed in the air duct, the shielding member being movable between a first position and a second position; wherein the air outlet is closed when the shielding member is in the first position, and the communication between the air duct and the evaporator chamber is interrupted, the air outlet is opened when the shielding member is in the second position; The elastic driving structure is connected with the shielding member and the inner wall of the air duct respectively at two ends, and can be stretched and contracted to drive the shielding member to move. The elastic driving structure is a memory alloy piece.

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