Refrigerator

Abstract

The application relates to the technical field of household appliances, in particular to a refrigerator comprising a cabinet body, which has: a first refrigeration compartment located on the upper side of the cabinet body along the height direction of the cabinet body; a second refrigeration compartment located on the lower side of the first refrigeration compartment along the height direction of the cabinet body; an air duct assembly arranged in the cabinet body, the air duct assembly has: a first return air inlet in communication with the first refrigeration compartment; a second return air inlet in communication with the first refrigeration compartment; an air door assembly arranged in the air duct assembly, the air door assembly comprises: a driving piece; and a blocking piece movably connected to the driving piece, the blocking piece is configured to rotate under the driving of the driving piece to block the first return air inlet or the second return air inlet. The application simplifies the air duct design and reduces the manufacturing cost.

Description

Technical Field

[0001] This application relates to the field of home appliance technology, and more particularly to a refrigerator. Background Technology

[0002] As an indispensable home appliance in modern families, refrigerators have become increasingly sophisticated and functional with the development of technology, in order to meet users' needs for food preservation, storage, and other aspects.

[0003] In conceiving and implementing this application, the applicant discovered at least the following problems: Currently, refrigerators have a refrigeration compartment in the upper part and a variable temperature compartment or a specific preservation compartment in the lower part. In order to provide cold air to these compartments, the refrigerator is usually equipped with an air duct system. For the two compartments arranged vertically, each compartment is generally equipped with an independent air duct and damper, which leads to complex structure, increased cost and large space occupation.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] The main objective of this application is to provide a refrigerator that simplifies the air duct design and reduces manufacturing costs.

[0006] To achieve the above objectives, this application provides a refrigerator, comprising:

[0007] The enclosure has:

[0008] The first refrigeration compartment is located on the upper side of the cabinet along the height direction of the cabinet;

[0009] The second refrigeration compartment is located below the first refrigeration compartment along the height of the cabinet;

[0010] The air duct assembly, located within the enclosure, has the following features:

[0011] The first return air vent is connected to the first refrigeration room;

[0012] The second return air vent connects to the first refrigeration compartment.

[0013] A damper assembly, located within the duct assembly, includes:

[0014] Drive components;

[0015] A blocking element, movably connected to a drive element, is configured to rotate under the drive of the drive element to block the first return air vent or the second return air vent.

[0016] The beneficial effects of this application are: selective sealing of two return air vents at different locations can be achieved by using a single rotatable sealing component, eliminating the complex structure of multiple independent dampers and drive components, simplifying duct design, and reducing manufacturing costs and failure rates.

[0017] Based on the above technical solution, the following improvements can be made to this application.

[0018] In some alternative implementations, the duct assembly includes:

[0019] The first air duct plate extends along the height of the enclosure, and the first return air outlet is located on the first air duct plate.

[0020] The second air duct plate extends along the depth of the enclosure, and the second return air outlet is located on the second air duct plate.

[0021] The above technical solution has the following advantages or beneficial effects: by setting the first return air inlet and the second return air inlet on the first and second duct plates that are perpendicular to each other, a more convenient sealing path and installation position are created for the single rotating damper.

[0022] In some alternative implementations, the damper assembly is located at the junction of the first and second air duct plates.

[0023] The above technical solution has the following advantages or beneficial effects: by setting the damper assembly at the connection of the two air duct plates and using a rotation method to seal it, the corner space of the refrigerator is fully utilized, making the entire air duct system very compact and giving more space to the effective volume of the refrigerator.

[0024] In some alternative implementations, the damper assembly further includes:

[0025] A sealing element, attached to a sealing component.

[0026] The above technical solution has the following advantages or beneficial effects: by setting a sealing element on the sealing element, the airtightness in the sealed state is ensured, the loss of cold energy is reduced, and the energy efficiency of the refrigerator is improved.

[0027] In some alternative embodiments, the sealing element is a wind vane, and the sealing element has a first sealing surface and a second sealing surface;

[0028] There are at least two seals, which are respectively affixed to the first sealing surface and the second sealing surface.

[0029] The above technical solution has the following advantages or beneficial effects: through the double-sided sealing design, the sealing component is given bidirectional sealing capability, ensuring that it can achieve a better sealing effect when sealing either the first return air inlet or the second return air inlet.

[0030] In some alternative implementations, the driving element is a drive motor;

[0031] When the drive unit rotates along the first direction, the sealing unit is configured to rotate under the drive of the drive unit to seal the second return air inlet;

[0032] When the drive unit rotates in the second direction, the sealing element is configured to rotate under the drive of the drive unit to seal the first return air inlet;

[0033] The first direction and the second direction are opposite.

[0034] The above technical solution has the following advantages or beneficial effects: the blocking status of the first and second return air inlets can be directly controlled by the forward and reverse rotation of the drive motor, making the whole control simpler and more reliable.

[0035] In some alternative implementations, the damper assembly further includes:

[0036] The transmission component has a first transmission end and a second transmission end. The first transmission end is connected to the driving end of the driving component, and the second transmission end is connected to the sealing component.

[0037] The above technical solution has the following advantages or beneficial effects: it establishes a power transmission bridge between the driving component and the sealing component, provides layout flexibility, and allows for the conversion of speed and torque.

[0038] In some alternative implementations, the transmission component includes:

[0039] The first gear is coaxially mounted with the driving component;

[0040] The second gear is coaxially mounted with the sealing component;

[0041] The third gear meshes between the first and second gears.

[0042] The above technical solution has the following advantages or beneficial effects: while ensuring torque transmission, it can be applied to situations with limited space for power transmission and direction change.

[0043] In some alternative implementations, the second gear is an incomplete gear.

[0044] The above technical solution has the following advantages or beneficial effects: by utilizing the mechanical characteristics of incomplete gears, a rigid and reliable mechanical limit is provided for the rotation range of the damper, preventing system overshoot or damage, and no additional sensors or control programs are required.

[0045] In some alternative implementations, the damper assembly further includes:

[0046] The housing is located within the air duct assembly, and both the drive components and transmission components are housed within the housing.

[0047] A frame, located within the box, has the following features:

[0048] The first air outlet is positioned to match the first return air outlet.

[0049] The second air outlet is positioned to match the second return air outlet.

[0050] The above technical solution has the following advantages or beneficial effects: by setting up the box, the entire damper assembly is modularized, achieving dust prevention, interference prevention and easy assembly.

[0051] The refrigerator provided in this application includes a cabinet with: a first refrigeration compartment located on the upper side of the cabinet along the height direction; a second refrigeration compartment located on the lower side of the first refrigeration compartment along the height direction; an air duct assembly disposed in the cabinet, the air duct assembly having: a first return air inlet communicating with the first refrigeration compartment; a second return air inlet communicating with the first refrigeration compartment; and an air damper assembly disposed in the air duct assembly, the air damper assembly including: a driving member; and a sealing member movably connected to the driving member, the sealing member being configured to rotate under the drive of the driving member to block the first return air inlet or the second return air inlet.

[0052] Selective sealing of two return air vents at different locations can be achieved by using a single rotatable sealing component, eliminating the need for a complex structure of multiple independent dampers and drive components, simplifying duct design, and reducing manufacturing costs and failure rates. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 A schematic diagram of the refrigerator structure in the first state of the damper assembly provided in the embodiments of this application;

[0055] Figure 2 A schematic diagram of the refrigerator structure in the second state of the damper assembly provided in the embodiments of this application;

[0056] Figure 3 This is a schematic diagram of the structure of the refrigerator damper assembly provided in an embodiment of this application;

[0057] Figure 4 This is a structural schematic diagram of the refrigerator door assembly in a first state, viewed from a first perspective, provided in an embodiment of this application.

[0058] Figure 5 This is a structural schematic diagram of the refrigerator door assembly in a second state from a first perspective, provided in an embodiment of this application.

[0059] Figure 6 This is a structural schematic diagram of the refrigerator door assembly in a first state, viewed from a second perspective, provided in an embodiment of this application.

[0060] Figure 7 for Figure 6 A magnified view of a portion of point I in the middle;

[0061] Figure 8 This is a structural schematic diagram of the refrigerator door assembly in a second state from a second perspective, provided in an embodiment of this application.

[0062] Figure 9 for Figure 8 A magnified view of a section at point II;

[0063] Figure 10 This is a schematic diagram of the assembly of the sealing and plugging components in a refrigerator provided in an embodiment of this application;

[0064] Figure 11 This is a schematic diagram of the assembly of the box and frame in a refrigerator provided in an embodiment of this application.

[0065] Explanation of reference numerals in the attached figures:

[0066] 100 - Refrigerator;

[0067] 110 - Cabinet; 111 - First refrigeration compartment; 112 - Second refrigeration compartment;

[0068] 120-Gate Body;

[0069] 130 - Air duct assembly; 131 - First air duct plate; 1311 - First return air outlet; 132 - Second air duct plate; 1321 - Second return air outlet;

[0070] 140-Damper assembly; 141-Driver; 142-Blocking component; 143-Sealing component; 144-Transmission component; 1441-First gear; 1442-Second gear; 1443-Third gear; 145-Box; 146-Frame; 1461-First air outlet; 1462-Second air outlet;

[0071] 150 - Evaporator; 160 - Fan. Detailed Implementation

[0072] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. All other obtained embodiments are within the scope of protection of this application. In the absence of conflict, the following embodiments and features can be combined with each other.

[0073] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0074] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0076] Currently, refrigerators have a refrigerator compartment in the upper part and a variable temperature compartment or a special preservation compartment in the lower part. In order to provide cold air to these compartments, refrigerators are usually equipped with an air duct system. For the two compartments arranged vertically, each compartment is usually equipped with an independent air duct and damper, which leads to complex structure, increased cost and large space occupation.

[0077] To overcome the shortcomings of the prior art, the refrigerator provided in this application can selectively block two return air vents at different locations using a single rotatable sealing component, eliminating the complex structure of multiple independent dampers and drive components, simplifying the air duct design, and reducing manufacturing costs and failure rates.

[0078] The contents of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the contents of this application.

[0079] Figure 1 This is a schematic diagram of the refrigerator structure in the first state of the damper assembly provided in the embodiments of this application. Figure 2 This is a schematic diagram of the refrigerator structure in the second state of the damper assembly provided in the embodiment of this application. Figure 3 This is a schematic diagram of the structure of the refrigerator damper assembly provided in an embodiment of this application. Figure 4 This is a structural schematic diagram of the refrigerator door assembly in a first state, viewed from a first perspective, according to an embodiment of this application. Figure 5 This is a first-view structural schematic diagram of the refrigerator damper assembly in the second state provided in an embodiment of this application.

[0080] like Figures 1 to 5 As shown, this application embodiment provides a refrigerator 100, including:

[0081] Box 110 has:

[0082] The first refrigeration compartment 111 is located on the upper side of the cabinet 110 along the height direction of the cabinet 110;

[0083] The second refrigeration compartment 112 is located below the first refrigeration compartment 111 along the height direction of the cabinet 110;

[0084] Air duct assembly 130, disposed in housing 110, has the following features:

[0085] The first return air vent 1311 is connected to the first refrigeration chamber 111;

[0086] The second return air vent 1321 is connected to the first refrigeration chamber 111;

[0087] Damper assembly 140 is disposed in duct assembly 130, and damper assembly 140 includes:

[0088] Drive component 141;

[0089] The blocking member 142 is movably connected to the drive member 141 and is configured to rotate under the drive of the drive member 141 to block the first return air vent 1311 or the second return air vent 1321.

[0090] With the above configuration, the refrigerator 100 of this application embodiment can selectively block two return air vents at different positions with a single rotatable sealing member 142, eliminating the complex structure of multiple independent dampers and drive members 141, simplifying the air duct design, and reducing manufacturing costs and failure rate.

[0091] It should be noted that the following provides a detailed explanation of each structure.

[0092] [Box 110]

[0093] The refrigerator 100 of this application embodiment may include a cabinet 110 and a door 120. The cabinet 110 may be configured with a refrigeration compartment. The refrigeration compartment has an opening for storing food and other items. There may be one or more refrigeration compartments. When there are multiple refrigeration compartments, the multiple refrigeration compartments may be divided into a refrigerator compartment, a freezer compartment, or a variable temperature compartment, etc.

[0094] The cabinet 110 has a first refrigeration compartment 111 and a second refrigeration compartment 112. The first refrigeration compartment 111 is located on the upper side of the cabinet 110 along the height direction (e.g., it can be a refrigerator compartment), and the second refrigeration compartment 112 is located on the lower side of the first refrigeration compartment 111 along the height direction of the cabinet 110 (e.g., it can be a variable temperature compartment or a freezer compartment).

[0095] Of course, the specific distribution of the first refrigeration room 111 and the second refrigeration room 112 as a cold storage room, a freezer room, or a variable temperature room can be adjusted according to the actual situation, and no further restrictions will be imposed here.

[0096] For example, the refrigerator body 110 may include an outer shell and an inner liner, the outer shell defining the external boundary of the refrigerator 100. The inner liner may be disposed within and connected to the outer shell. The inner liner may be recessed inward to form a cooling compartment. An insulation layer may be filled between the outer shell and the inner liner, which can insulate the cooling compartment, thereby reducing the energy consumption of the refrigerator 100.

[0097] The box 110 adopts a hollow cuboid structure. It is understood that in other embodiments, the box 110 may also adopt a hollow shell structure of other shapes.

[0098] It should be noted that X represents the depth direction of the box 110, and Z represents the height direction of the box 110.

[0099] It should be noted that the refrigerator 100 also includes a refrigeration component, which is used to provide cooling for the interior of the refrigerator 100 in order to maintain a low temperature environment in each refrigeration compartment.

[0100] In some embodiments, the refrigeration assembly includes a compressor, a condenser, an evaporator 150, a throttling device, etc. The specific structure and connection relationships of the refrigeration assembly can be found in related art, and will not be repeated here. The evaporator 150 provides different amounts of cooling capacity to different types of storage spaces, resulting in different temperatures within these spaces. For example, the temperature inside a refrigerator compartment is generally between 2°C and 10°C, preferably between 4°C and 7°C. The temperature range inside a freezer compartment is generally between -22°C and -14°C.

[0101] Different types of items have different optimal storage temperatures, and consequently, different suitable storage spaces. For example, fruits and vegetables are best stored in the refrigerator or crisper drawer, while meat is best stored in the freezer.

[0102] [Gate 120]

[0103] It should be noted that the door 120 can be connected to the cabinet 110 to open or close the refrigeration compartment.

[0104] A door 120 is disposed on the front surface of the enclosure 110 to enclose the refrigeration compartment. The door 120 is configured to open and close the refrigeration compartment, meaning it can open and close the front opening of the enclosure 110. Doors 120 can be correspondingly assigned to refrigeration compartments; that is, each refrigeration compartment can have one or more doors 120. The number of refrigeration compartments and doors 120, as well as the function of the refrigeration compartments, can be selected based on specific circumstances. One door 120 can be assigned to the same refrigeration compartment. Alternatively, two doors 120 can be assigned to the same refrigeration compartment.

[0105] In some possible implementations of this application, the door 120 can be rotatably connected to the housing 110 about the height direction Z of the housing 110. The door 120 can be pulled or pushed to rotate relative to the housing 110, thereby opening or closing the refrigeration compartment.

[0106] In some embodiments, the door 120 is a rotating door structure. The door 120 is rotatably disposed on the front side of the housing 110, and in this case, the door 120 can be used as a general door structure, such as a refrigerator door, a variable temperature door, etc.

[0107] Specifically, the door 120 and the cabinet 110 can be connected by a hinge so that the door 120 of the refrigerator 100 can rotate around the axis of the hinge, thereby opening and closing the door 120 and opening and closing the corresponding refrigeration compartment.

[0108] In some embodiments, the door 120 can also be a sliding door structure. The door 120 is slidably disposed on the front side of the cabinet 110, and in this case, the door 120 can be used as a drawer door. Specifically, guide rails (not shown in the figure) are respectively provided on the left and right inner side walls of the cabinet liner, and the door 120 is connected to the guide rails on both sides, thereby realizing the sliding function of the door 120 and realizing the opening and closing of the refrigeration compartment by extending and retracting the guide rails.

[0109] [Airflow Component 130]

[0110] It should be noted that the air duct assembly 130 is located at the back of the housing 110 or in the partition between the compartments. The air duct assembly 130 has a first return air inlet 1311 and a second return air inlet 1321, which are respectively connected to the first refrigeration compartment 111 and the second refrigeration compartment 112.

[0111] In some alternative implementations, the duct assembly 130 includes:

[0112] The first air duct plate 131 extends along the height direction of the housing 110, and the first return air outlet 1311 is opened on the first air duct plate 131.

[0113] The second air duct plate 132 extends along the depth direction of the housing 110, and the second return air vent 1321 is opened on the second air duct plate 132.

[0114] The above technical solution has the following advantages or beneficial effects: by setting the first return air inlet 1311 and the second return air inlet 1321 on the mutually perpendicular first air duct plate 131 and second air duct plate 132, a more convenient sealing path and installation position are created for the single rotating damper.

[0115] Furthermore, the first air duct plate 131 extends vertically along the height direction of the housing 110, and the first return air vent 1311 is opened on it; the second air duct plate 132 extends horizontally along the depth direction of the housing 110, and the second return air vent 1321 is opened on it. This makes the first return air vent 1311 and the second return air vent 1321 form an angle of approximately 90 degrees in space.

[0116] Furthermore, for a sealing element 142 rotating around a fixed point, its trajectory is an arc. Placing the two targets to be sealed (return air vents) at two different points on the circular trajectory is an efficient layout. This design allows the sealing element 142 to easily cover the first return air vent 1311 and the second return air vent 1321 by simply swinging at a small angle at the intersection of two vertical planes, with smooth movement and minimal driving force required.

[0117] [Damper assembly 140]

[0118] Figure 6This is a structural schematic diagram of the refrigerator damper assembly in a first state, viewed from a second perspective, according to an embodiment of this application. Figure 7 for Figure 6 A magnified view of a portion of point I in the middle. Figure 8 This is a structural schematic diagram of the refrigerator door assembly in a second state, viewed from a second perspective, according to an embodiment of this application. Figure 9 for Figure 8 A magnified view of a portion of point II in the middle.

[0119] like Figures 1 to 9 As shown, the damper assembly 140 is installed on the duct assembly 130 and is used to control the opening and closing of the first return air inlet 1311 and the second return air inlet 1321.

[0120] It should be noted that traditional solutions require two independent dampers and drive units to control the first return air inlet 1311 and the second return air inlet 1321, respectively. This application uses only a combination of "one drive component 141" and "one sealing component 142," which, through rotation, can cover the sealing requirements of both the first return air inlet 1311 and the second return air inlet 1321. This simplifies the mechanical structure, reduces the number of parts, and lowers manufacturing costs and assembly complexity.

[0121] Furthermore, since the sealing element 142 can completely block one of the return air vents, it can completely cut off the airflow circulation in the corresponding room.

[0122] When a strong cooling effect is needed for the second refrigeration compartment 112 (lower layer), the first return air vent 1311 (upper layer) can be blocked, forcing most of the cold air to circulate downwards, and vice versa. This effectively avoids unnecessary cold air exchange and odor crosstalk between the upper and lower compartments through the return air duct, improving the temperature independence and preservation effect of each compartment.

[0123] Furthermore, the damper assembly 140 typically saves more installation space compared to two separate sliding dampers. This compact design frees up more usable volume inside the refrigerator 100.

[0124] In some alternative embodiments, the damper assembly 140 is located at the junction of the first duct plate 131 and the second duct plate 132.

[0125] The above technical solution has the following advantages or beneficial effects: by setting the damper assembly 140 at the connection of the two air duct plates and sealing it by rotation, the corner space of the refrigerator 100 is fully utilized, making the entire air duct system very compact and giving more space to the effective volume of the refrigerator 100.

[0126] In other words, placing the damper assembly 140 at the structural intersection further optimizes the spatial layout and allows one of the sealing components 142 of the damper assembly 140 to easily cover the first return air inlet 1311 or the second return air inlet 1321 on the two vertical planes.

[0127] Placing the damper assembly 140 here means that its distance to the first return air outlet 1311 and the second return air outlet 1321 is the shortest, resulting in the most direct response and the most timely control.

[0128] Furthermore, from a structural and assembly perspective, this location typically has sufficient structural strength to support the damper assembly 140, and facilitates wiring and installation, improving production efficiency and ease of maintenance.

[0129] Figure 10 This is a schematic diagram of the assembly of the sealing and plugging components in the refrigerator provided in an embodiment of this application.

[0130] like Figure 9 As shown, in some alternative embodiments, the damper assembly 140 further includes a seal 143, which is attached to the sealing member 142.

[0131] The above technical solution has the following advantages or beneficial effects: by setting a sealing element 143 on the sealing element 142, the airtightness in the sealed state is ensured, the loss of cold energy is reduced, and the energy efficiency of the refrigerator 100 is improved.

[0132] The specific analysis is as follows: There will be tiny gaps and tolerances between the metal or plastic air flap and the air duct plate, making a complete seal impossible. The added seal 143 can fill these gaps.

[0133] When the sealing element 142 presses against the first return air inlet 1311 or the second return air inlet 1321, the sealing element 143 undergoes elastic deformation, forming a tight, surface-contact seal with the edge of the return air inlet. This effectively prevents cold air from leaking back into the air duct from the closed return air inlet, ensuring that all cool air is directed to the rooms that need cooling, avoiding energy waste and temperature fluctuations.

[0134] In some embodiments, the seal 143 is made of an elastic material such as rubber or silicone.

[0135] In some alternative embodiments, the sealing element 142 is a wind vane, and the sealing element 142 has a first sealing surface and a second sealing surface;

[0136] There are at least two seals 143, and the at least two seals 143 are respectively attached to the first sealing surface and the second sealing surface.

[0137] The above technical solution has the following advantages or beneficial effects: through the double-sided sealing design, the sealing component 142 is given bidirectional sealing capability, ensuring that it can achieve a better sealing effect when sealing either the first return air inlet 1311 or the second return air inlet 1321.

[0138] This means that regardless of whether the sealing element 142 rotates clockwise or counterclockwise, one of the first or second sealing surfaces with the sealing element 143 will always accurately press against the first return air inlet 1311 or the second return air inlet 1321. This ensures that the performance of the damper assembly 140 is symmetrical and consistent in both operating states, improving the reliability and consistency of the product.

[0139] like Figures 4 to 9 As shown, in some optional embodiments, the drive element 141 is a drive motor;

[0140] When the drive member 141 rotates along the first direction, the blocking member 142 is configured to rotate under the drive of the drive member 141 to block the second return air inlet 1321.

[0141] When the drive member 141 rotates along the second direction, the blocking member 142 is configured to rotate under the drive of the drive member 141 to block the first return air inlet 1311.

[0142] The first direction and the second direction are opposite.

[0143] The above technical solution has the following advantages or beneficial effects: the blocking status of the first return air inlet 1311 and the second return air inlet 1321 can be directly controlled by the forward and reverse rotation of the drive motor, making the whole control simpler and more reliable.

[0144] The specific analysis is as follows: Using a drive motor (such as a stepper motor or servo motor) as the power source results in precise control and rapid response.

[0145] Defining the motor's "forward rotation" and "reverse rotation" as "blocking the second return air vent 1321" and "blocking the first return air vent 1311" respectively makes the control logic very clear. The refrigerator 100's control system does not require complex coordinate calculations; it only needs to issue simple directional commands to complete the damper switching, reducing software complexity and improving system reliability.

[0146] Here, the first direction is the direction of clockwise rotation, and the second direction is the direction of counterclockwise rotation.

[0147] Alternatively, the second direction is the clockwise rotation direction, and the first direction is the counterclockwise rotation direction; only the rotation direction of the drive motor needs to be controlled.

[0148] In some embodiments, when it is necessary to shut off the return air of the second refrigeration compartment 112, the drive member 141 drives the sealing member 142 to rotate clockwise. The second sealing surface of the sealing member 142 and the sealing member 143 thereon press against the edge of the second return air inlet 1321, sealing it tightly. At this time, the first return air inlet 1311 remains unobstructed.

[0149] When it is necessary to close the return air of the first refrigeration chamber 111 and allow the return air of the second refrigeration chamber 112, the drive component 141 drives the sealing component 142 to rotate counterclockwise. The first sealing surface of the sealing component 142 and its sealing element 143 press against the edge of the first return air inlet 1311, sealing it tightly. At this time, the second return air inlet 1321 remains unobstructed.

[0150] In some alternative embodiments, the damper assembly 140 further includes a transmission member 144 having a first transmission end and a second transmission end, the first transmission end being connected to the drive end of the drive member 141, and the second transmission end being connected to the sealing member 142.

[0151] The above technical solution has the following advantages or beneficial effects: it establishes a power transmission bridge between the driving component 141 and the sealing component 142, provides layout flexibility, and allows for the conversion of speed and torque.

[0152] The specific analysis is as follows: Transmission component 144 solves the problem that the output shaft position of drive component 141 (such as a motor) may not be consistent with the rotating shaft position of sealing component 142. Through transmission component 144, power can be transmitted to the required location, increasing the freedom of mechanical design.

[0153] At the same time, the transmission speed and torque can be changed through the transmission component 144 (such as a gear set). For example, the rotational speed can be reduced to increase the torque, ensuring a sealing effect.

[0154] In some alternative embodiments, the transmission member 144 includes:

[0155] The first gear 1441 is coaxially arranged with the driving component 141;

[0156] The second gear 1442 is coaxially arranged with the sealing component 142;

[0157] The third gear 1443 meshes between the first gear 1441 and the second gear 1442.

[0158] The above technical solution has the following advantages or beneficial effects: while ensuring torque transmission, it can be applied to situations with limited space for power transmission and direction change.

[0159] The specific analysis is as follows: The first gear 1441 (input), the third gear 1443 (idler), and the second gear 1442 (output) constitute a gear transmission chain. Gear transmission is highly efficient, has a precise transmission ratio, and is reliable in operation. The addition of the third gear 1443 (idler) not only transmits power but also changes the direction of rotation.

[0160] In some embodiments, to transmit power more smoothly and precisely and limit the rotation angle, the damper assembly 140 is provided with a transmission member 144. The transmission member 144 includes a first gear 1441, a second gear 1442, and a third gear 1443. The first gear 1441 is mounted on the output shaft of the drive member 141. The second gear 1442 is coaxially fixed to the rotating shaft of the sealing member 142. The third gear 1443 acts as an idler gear, meshing with both the first gear 1441 and the second gear 1442, transmitting power from the motor to the sealing member 142.

[0161] In some alternative implementations, the second gear 1442 is an incomplete gear.

[0162] The above technical solution has the following advantages or beneficial effects: by utilizing the mechanical characteristics of incomplete gears, a rigid and reliable mechanical limit is provided for the rotation range of the damper, preventing system overshoot or damage, and no additional sensors or control programs are required.

[0163] The specific analysis is as follows: When the toothed part of the incomplete gear finishes meshing with the idler gear and enters the toothless zone, the transmission will be automatically interrupted, and the sealing component 142 (damper) will immediately stop at the precise design position, ensuring that the sealing component 142 can rotate to the correct angle to just block the return air inlet each time, and will not rotate excessively due to inertia.

[0164] Furthermore, even if the control system malfunctions and issues a continuous rotation command, the motor will not damage the damper or duct structure because the transmission has been mechanically disconnected.

[0165] In some embodiments, the second gear 1442 is designed as an incomplete gear, meaning that only a portion of its circumference has teeth. When the drive member 141 drives the second gear 1442 to rotate, the sealing member 142 will be driven to rotate due to the meshing of the third gear 1443 and the mutual meshing of the first gear 1441.

[0166] After the toothed part rotates, the toothless part aligns with the third gear 1443, the transmission stops, and the sealing component 142 also stops at the preset position. By precisely designing the angle of the toothed part, the rotation range of the sealing component 142 can be controlled, preventing it from rotating excessively and impacting the duct wall, thus improving the reliability and lifespan of the system.

[0167] Figure 11This is a schematic diagram of the assembly of the box and frame in a refrigerator provided in an embodiment of this application.

[0168] like Figures 3 to 11 As shown, in some optional embodiments, the damper assembly 140 further includes:

[0169] The housing 145 is located in the air duct assembly 130, and the drive component 141 and the transmission component 144 are both located inside the housing 145.

[0170] Frame 146, located on box 145, has the following features:

[0171] The first air outlet 1461 is positioned to match the first return air outlet 1311.

[0172] The second air outlet 1462 is positioned to match the second return air outlet 1321.

[0173] The above technical solution has the following advantages or beneficial effects: by setting the box 145, the entire damper assembly 140 is modularized, achieving dustproof, anti-interference and easy assembly.

[0174] Specifically, the housing 145 encapsulates the drive component 141 and the transmission component 144, forming an independent structural module. This effectively prevents dust, condensation, or foreign objects from entering and interfering with the operation of the gears and motor, greatly improving the long-term operational reliability of the mechanism.

[0175] On the assembly line, workers only need to install the entire module onto the air duct at once and connect the power and signal cables, greatly simplifying the assembly process. When maintenance is required, the entire module can be disassembled and replaced, reducing the difficulty and cost of maintenance.

[0176] In some embodiments, all moving parts (drive component 141, transmission component 144) of the damper assembly 140 can be integrated and installed in a separate housing 145. The entire housing 145 is then fixed as a module to a preset position of the duct assembly 130 by means of screws or clips.

[0177] The first air outlet 1461 and the second air outlet 1462 on the frame 146 are precisely matched with the first return air inlet 1311 and the second return air inlet 1321 of the duct assembly 130, respectively. This is key to realizing different operating modes (such as internal circulation, external circulation, and mixed mode) of equipment such as air conditioners and fresh air systems. Under the drive of the drive component 141 and the transmission component 144, the sealing component 142 can precisely open or close these two air outlets, thereby controlling the airflow path.

[0178] It should be noted that when the refrigerator 100 is running, the cold air generated by the evaporator 150 and the fan 160 is sent into each cooling compartment through the air supply duct. After circulating in the cooling compartment, the cold air becomes higher-temperature return air, which needs to return to the evaporator 150 through the return air vent for further cooling.

[0179] When the second cooling chamber 112 does not require cooling, the control system commands the drive component 141 to rotate, causing the sealing component 142 to block the second return air vent 1321. At this time, only the return air from the first cooling chamber 111 can enter the air duct through the first return air vent 1311, and the cold air is centrally supplied to the first cooling chamber 111.

[0180] When the second refrigeration chamber 112 needs to be cooled, the control system instructs the drive component 141 to rotate in the opposite direction, causing the sealing component 142 to block the first return air vent 1311. At this time, cold air is supplied centrally to the first refrigeration chamber 111 and the second refrigeration chamber 112.

[0181] The refrigerator provided in this application includes a cabinet with: a first refrigeration compartment located on the upper side of the cabinet along the height direction; a second refrigeration compartment located on the lower side of the first refrigeration compartment along the height direction; an air duct assembly disposed in the cabinet, the air duct assembly having: a first return air inlet communicating with the first refrigeration compartment; a second return air inlet communicating with the first refrigeration compartment; and an air damper assembly disposed in the air duct assembly, the air damper assembly including: a driving member; and a sealing member movably connected to the driving member, the sealing member being configured to rotate under the drive of the driving member to block the first return air inlet or the second return air inlet.

[0182] Selective sealing of two return air vents at different locations can be achieved by using a single rotatable sealing component, eliminating the need for a complex structure of multiple independent dampers and drive components, simplifying duct design, and reducing manufacturing costs and failure rates.

[0183] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "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 based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0184] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0185] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A refrigerator (100), characterized in that, include: The enclosure (110) has: The first refrigeration chamber (111) is located on the upper side of the box (110) along the height direction of the box (110); The second refrigeration chamber (112) is located below the first refrigeration chamber (111) along the height direction of the box body (110); Air duct assembly (130), disposed in the housing (110), the air duct assembly (130) having: The first return air vent (1311) is connected to the first refrigeration chamber (111); The second return air vent (1321) is connected to the first refrigeration chamber (111); A damper assembly (140) is disposed in the air duct assembly (130), the damper assembly (140) comprising: Drive unit (141); A blocking element (142) is movably connected to the drive element (141) and is configured to rotate under the drive of the drive element (141) to block the first return air vent (1311) or the second return air vent (1321).

2. The refrigerator (100) according to claim 1, characterized in that, The air duct assembly (130) includes: The first air duct plate (131) extends along the height direction of the box (110), and the first return air vent (1311) is opened on the first air duct plate (131). The second air duct plate (132) extends along the depth direction of the box (110), and the second return air vent (1321) is opened on the second air duct plate (132).

3. The refrigerator (100) according to claim 2, characterized in that, The damper assembly (140) is located at the connection between the first air duct plate (131) and the second air duct plate (132).

4. The refrigerator (100) according to any one of claims 1-3, characterized in that, The damper assembly (140) also includes: A sealing element (143) is attached to the sealing element (142).

5. The refrigerator (100) according to claim 4, characterized in that, The sealing element (142) is a wind vane, and the sealing element (142) has a first sealing surface and a second sealing surface; There are at least two sealing elements (143), and at least two sealing elements (143) are respectively attached to the first sealing surface and the second sealing surface.

6. The refrigerator (100) according to any one of claims 1-3, characterized in that, The driving component (141) is a drive motor; When the drive member (141) rotates along the first direction, the blocking member (142) is configured to rotate under the drive of the drive member (141) to block the second return air inlet (1321). When the drive member (141) rotates along the second direction, the blocking member (142) is configured to rotate under the drive of the drive member (141) to block the first return air vent (1311). The first direction and the second direction are opposite in direction.

7. The refrigerator (100) according to claim 6, characterized in that, The damper assembly (140) also includes: The transmission component (144) has a first transmission end and a second transmission end. The first transmission end is connected to the driving end of the driving component (141), and the second transmission end is connected to the sealing component (142).

8. The refrigerator (100) according to claim 7, characterized in that, The transmission component (144) includes: The first gear (1441) is coaxially arranged with the driving member (141); The second gear (1442) is coaxially arranged with the sealing member (142); The third gear (1443) meshes between the first gear (1441) and the second gear (1442).

9. The refrigerator (100) according to claim 8, characterized in that, The second gear (1442) is an incomplete gear.

10. The refrigerator (100) according to claim 7, characterized in that, The damper assembly (140) also includes: The housing (145) is located in the air duct assembly (130), and the drive component (141) and the transmission component (144) are both located inside the housing (145); A frame (146) is disposed on the box body (145), the frame (146) having: The first air outlet (1461) is positioned to match the first return air outlet (1311); The second air outlet (1462) is positioned to match the second return air outlet (1321).

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