refrigerator

Abstract

The present invention provides a refrigerator, comprising a cabinet and a door. The door is rotatably mounted on the cabinet. A door storage space and an air inlet duct connected to the door storage space are provided in the door, and the air inlet end of the air inlet duct is coaxial with the rotation axis of the door. The air outlet end of the air outlet duct of the cabinet is connected to the air inlet end of the air inlet duct in a rotational manner around the rotation axis of the door, and the outlet of the air outlet duct is connected to the inlet of the air inlet duct. Since the air outlet end of the air outlet duct is connected to the air inlet end of the air inlet duct in a rotational manner around the rotation axis of the door, the air outlet duct and the air inlet duct form a closed air path. During the opening and closing process of the door, the stability of the air path can be ensured, the sealing of the air path is improved, and airflow overflow can be prevented. Therefore, the problem of air path failure caused by deformation of the door storage space of the refrigerator can be solved, thereby achieving the effect of adding storage space that can be used for a long time to the refrigerator.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerated storage, and in particular to a refrigerator. Background Art

[0002] With the improvement of living standards, people have higher and higher requirements for the quality of life. For example, different foods or items need to be stored in different temperature environments. In the existing technology, refrigerators have few partitions and cannot meet people's needs for storing different foods or items. In the related art, there is a technology that sets up storage space in the refrigerator door and delivers cold air through air holes set respectively on the door and the box body, so that the refrigerator door has an independent storage space. However, there is a problem that the air holes are misaligned due to deformation of the door, which in turn causes the air path to fail, affecting the normal use of the door storage space. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide a refrigerator that overcomes the above problems or at least partially solves the above problems, which can solve the problem of failure of the air path of the storage space of the refrigerator door and achieve the effect of adding storage space that can be used for a long time to the refrigerator.

[0004] Specifically, the present invention provides a refrigerator, characterized in that it comprises a box body and a door body, wherein the door body is rotatably mounted on the box body;

[0005] The door body has a door body storage space and an air inlet duct connected to the door body storage space, and the box body has an air outlet duct;

[0006] The air inlet end of the air inlet duct is coaxial with the rotation axis of the door body, and / or the air outlet end of the air outlet duct is coaxial with the rotation axis of the door body, and / or the outlet on the air outlet end of the air outlet duct is coaxial with the rotation axis of the door body, and / or the inlet on the air inlet end of the air inlet duct is coaxial with the rotation axis of the door body, so that the air outlet end of the outlet duct and the air inlet end of the air inlet duct are rotatably connected around the rotation axis of the door body or the surface where the outlet on the air outlet end of the air outlet duct is located and the surface where the inlet on the air inlet end of the air inlet duct is located are always in contact and rotate relative to each other, and at the same time, the outlet on the air outlet end of the air outlet duct and the inlet on the air inlet end of the air inlet duct are always connected.

[0007] Optionally, the outlet on the outlet end of the air outlet duct is coaxial with the rotation axis of the door body; the inlet on the inlet end of the air inlet duct is coaxial with the rotation axis of the door body;

[0008] The inlet on the air inlet end of the air inlet duct is inserted into the outlet on the air outlet end of the air outlet duct, or the outlet on the air outlet end of the air outlet duct is inserted into the inlet on the air inlet end of the air inlet duct, or the inlet on the air inlet end of the air inlet duct is aligned with the outlet on the air outlet end of the air outlet duct and contacts each other.

[0009] Optionally, the air inlet end of the air inlet duct is coaxial with the rotation axis of the door body, and the air inlet end of the air inlet duct is inserted into the air outlet duct so that the air outlet end of the outlet duct is rotatably connected with the air inlet end of the air inlet duct around the rotation axis of the door body; and the inlet on the air inlet end of the air inlet duct is located inside the air outlet end of the air outlet duct and is connected with the air outlet duct, so that the airflow in the outlet duct enters the air inlet duct through the inlet on the air inlet end of the air inlet duct; or,

[0010] The outlet end of the air outlet duct is coaxial with the rotation axis of the door body, and the outlet end of the air outlet duct is inserted into the air inlet duct so that the outlet end of the air outlet duct and the air inlet end of the air inlet duct are rotatably connected around the rotation axis of the door body; and the outlet on the outlet end of the air outlet duct is located inside the air inlet end of the air inlet duct and is connected with the air inlet duct, so that the airflow in the air outlet duct enters the air inlet duct through the outlet on the outlet end of the air outlet duct.

[0011] Optionally, the air outlet duct includes an air supply section extending in a horizontal direction, and the lower surface of the air supply section is inclined to guide water at the air outlet end of the air supply section to the air inlet end of the air supply section, and the angle between the lower surface of the air supply section and the horizontal plane is greater than or equal to 4°.

[0012] Optionally, it also includes an air supply fan and a damper device;

[0013] A cooling chamber is provided in the box body, and the inlet of the air outlet duct is communicated with the cooling chamber;

[0014] The inlet of the air outlet duct is located on the wall of the cooling chamber or in the cooling chamber;

[0015] The cooling chamber is also in communication with the box storage space of the box;

[0016] The damper device is configured to control the connection between the cooling chamber and the box storage space of the box and / or the connection of the air outlet duct;

[0017] The air supply fan is configured to force air flow into the box storage space and the air outlet duct.

[0018] Optionally, the outlet on the outlet end of the air outlet duct is inserted into the inlet on the inlet end of the air inlet duct.

[0019] An annular opening groove coaxial with the rotation axis of the door body is provided on the outer side of the outlet on the outlet end of the air outlet duct, and the inlet on the air inlet end of the air inlet duct is inserted into the annular opening groove;

[0020] The inner peripheral wall surface of the annular opening groove is part or all of the outer peripheral wall surface of the outlet at the outlet end of the air outlet duct;

[0021] The inner annular edge of the opening of the annular opening groove is provided with a chamfer, and the outer annular edge of the opening of the annular opening groove is provided with a chamfer.

[0022] Optionally, the air outlet duct also includes an air outlet section, which is horizontally arranged and connected to the air outlet end of the air supply section; a vertically arranged connecting pipe is provided on the air outlet section, and the outlet of the connecting pipe is the outlet on the air outlet end of the air outlet duct, and the inlet of the air supply section is the inlet of the air outlet duct.

[0023] Optionally, it also includes:

[0024] A heating wire, which is arranged on the outer surface of the air outlet duct and is a thin film heating wire;

[0025] A humidity sensor is provided on the outer surface of the air outlet duct;

[0026] a first temperature sensor, the first temperature sensor being disposed on an outer surface of the air outlet duct;

[0027] A second temperature sensor is disposed in the door storage space.

[0028] Optionally, the door body includes a thermal insulation layer, and the door body storage space is located inside the thermal insulation layer.

[0029] Optionally, the opening of the outlet on the outlet end of the air outlet duct faces upward, the air inlet duct extends in a vertical direction, and the lower end of the air inlet duct is the air inlet end of the air inlet duct; the side wall of the air inlet duct is provided with an air supply hole connected to the door storage space; the bottom of the door storage space is also provided with a return air hole, and the return air hole is connected to the box storage space of the box body.

[0030] In the refrigerator provided by the present invention, the outlet end of the air outlet duct of the cabinet and the inlet end of the air inlet duct of the door are rotatably connected around the rotation axis of the door, or the surface of the outlet on the air outlet end of the air outlet duct and the surface of the inlet on the air inlet end of the air inlet duct are always in contact and rotate relative to each other, so that the air outlet duct and the air inlet duct always form a closed air path. During the opening and closing process of the door, the rotation of the air inlet duct relative to the air outlet duct does not affect the stability of the air path, greatly improving the sealing of the air path, preventing airflow overflow, and solving the problem of air path failure caused by deformation of the refrigerator door storage space, thereby ensuring long-term and stable use of the refrigerator storage space.

[0031] Furthermore, in the refrigerator of the present invention, since the door body is provided with an independent door storage space wrapped in a thermal insulation layer, the connection between this storage space and the air inlet channel allows the door storage space to be cooled and maintained at a low temperature, ensuring independent temperature control in the door area to preserve food or items. Therefore, the refrigerator of the present invention can provide a refrigerated space, a 0°C space, or a soft freezer space on the door body. Users can set the temperature zone according to their storage needs, thereby making better use of the refrigerator's storage space and allowing the refrigerator to have more functional partitions.

[0032] Furthermore, in the refrigerator of the present invention, a heating wire is provided on the outer surface of the air outlet duct. During use, the heating wire heats the air outlet duct, ensuring that condensation does not form on the outer surface of the duct. Furthermore, the heating wire is a thin film heating wire that is directly applied to the outer surface of the air outlet duct, enabling rapid and direct heating of the air outlet duct, thus saving energy.

[0033] Different from the traditional anti-condensation method of wire heating wire + foam layer, the volume of the air duct is greatly reduced, which increases the usable volume of the refrigerator and improves the volume ratio of the refrigerator. The thin film heating wire used in this patent is directly attached to the surface of the air duct, which heats quickly and directly, saving electricity. Specifically, the original wire heating wire is attached to the inside of the air duct, and the heating is indirectly heated through the air duct. The heating speed of the air duct surface is slow. The original air duct needs to be heated to 8°C above the condensation temperature to ensure that the outer surface of the air duct does not condense, which results in high energy consumption.

[0034] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0036] Figure 1 is a schematic structural diagram of a refrigerator according to one embodiment of the present invention;

[0037] Figure 2 is a schematic structural diagram of a refrigerator according to one embodiment of the present invention;

[0038] Figure 3 is a schematic cross-sectional view of a refrigerator according to one embodiment of the present invention;

[0039] Figure 4 is a schematic partial structural diagram of a refrigerator according to one embodiment of the present invention;

[0040] Figure 5 is a schematic exploded view of a refrigerator according to one embodiment of the present invention;

[0041] Figure 6 is a schematic partial structural diagram of a refrigerator according to one embodiment of the present invention;

[0042] Figure 7 is a schematic partial cross-sectional view of a refrigerator according to one embodiment of the present invention;

[0043] Figure 8 is a schematic partial cross-sectional view of a refrigerator according to one embodiment of the present invention. DETAILED DESCRIPTION

[0044] Refer to the following Figures 1 to 8 to describe the refrigerator of the embodiment of the present invention. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0045] Unless otherwise expressly defined or limited, terms such as "disposed," "installed," "connected," "connected," "fixed," and "coupled" should be broadly interpreted. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two elements or interaction between two elements, unless otherwise expressly defined. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0046] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact via another feature between them. That is, in the description of this embodiment, the first feature being "above," "above," and "above" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below," "below," or "below" the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0047] In the description of the present embodiment, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples.

[0048] Figure 1 FIG. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention. Figure 1 As shown, and reference Figures 2 to 8 An embodiment of the present invention provides a refrigerator, comprising a cabinet 200 and a door 100. The door 100 is rotatably mounted on the cabinet 200. The door 100 has a door storage space 110 and an air inlet duct 120 communicating with the door storage space 110. The cabinet 200 has an air outlet duct 210.

[0049] The air inlet end of the air inlet duct 120 is arranged coaxially with the rotation axis of the door body 100. And / or, the outlet 310 on the air outlet end of the air outlet duct 210 is arranged coaxially with the rotation axis of the door body 100. And / or, the inlet on the air inlet end of the air inlet duct 120 is arranged coaxially with the rotation axis of the door body 100. And / or, the air outlet end of the air outlet duct 210 is coaxial with the rotation axis of the door body 100.

[0050] This arrangement allows the outlet end of the air outlet duct 210 and the inlet end of the air inlet duct 120 to be rotatably connected around the rotation axis of the door body 100, or allows the surface where the outlet 310 on the outlet end of the air outlet duct 210 is located to be in constant contact with the surface where the inlet end of the air inlet duct 120 is located, and to rotate relative to each other. This ensures that the outlet of the air outlet duct 210 is always connected to the inlet of the air inlet duct 120.

[0051] Therefore, the refrigerator of the embodiment of the present invention can form a closed air path with the air outlet duct 210 and the air inlet duct 120. During the opening and closing process of the door body 100, the rotation of the air inlet duct 120 relative to the air outlet duct 210 does not affect the stability of the air path. This ensures the stability of the air path, greatly improves the sealing of the air path, and prevents airflow from overflowing. This solves the problem of air path failure in the refrigerator door storage space due to deformation of the door body 100, thereby adding storage space that can be used for a long time to the refrigerator.

[0052] For example, in some embodiments of the present invention, the outlet 310 on the outlet end of the outlet duct 210 is coaxial with the rotation axis of the door body 100. The inlet on the inlet end of the inlet duct 120 is coaxial with the rotation axis of the door body 100. The inlet on the inlet end of the inlet duct 120 is inserted into the outlet 310 on the outlet end of the outlet duct 210, or the outlet 310 on the outlet end of the outlet duct 210 is inserted into the inlet on the inlet end of the inlet duct 120, or the inlet on the inlet end of the inlet duct 120 is aligned with and in contact with the outlet 310 on the outlet end of the outlet duct 210.

[0053] The outlet 310 at the outlet end of the air outlet duct 210 and the inlet at the inlet end of the air inlet duct 120 are both coaxial with the rotation axis of the door body 100 to ensure that they do not affect the opening and closing of the door body 100. At the same time, a variety of connection methods are provided for the inlet at the inlet end of the air inlet duct 120 and the outlet 310 at the outlet end of the air outlet duct 210 to meet the needs of refrigerators of different models and sizes.

[0054] For another example, in some embodiments of the present invention, the air inlet end of the air inlet duct 120 is coaxial with the rotation axis of the door body, and the air inlet end of the air inlet duct 120 is inserted into the air outlet duct 210, so that the air outlet end of the air outlet duct 210 is rotatably connected to the air inlet end of the air inlet duct 120 about the rotation axis of the door body 100. Furthermore, the inlet on the air inlet end of the air inlet duct 120 is located within the air outlet end of the air outlet duct 210 and communicates with the air outlet duct 210, so that the airflow within the air outlet duct 210 enters the air inlet duct 120 through the inlet on the air inlet end of the air inlet duct 120. For another example, in some embodiments of the present invention, the air outlet end of the air outlet duct 210 is coaxial with the rotation axis of the door body 100, and the air outlet end of the air outlet duct 210 is inserted into the air inlet duct 120, so that the air outlet end of the air outlet duct 210 is rotatably connected to the air inlet end of the air inlet duct 120 about the rotation axis of the door body 100. The outlet 310 on the outlet end of the outlet duct 210 is located inside the inlet end of the inlet duct 120 and is connected to the inlet duct 120 , so that the airflow in the outlet duct 210 enters the inlet duct 120 through the outlet 310 on the outlet end of the outlet duct 210 .

[0055] In some embodiments of the present invention, Figure 6 As shown, the air outlet duct 210 includes an air supply section 211 extending horizontally. Furthermore, the air outlet duct 210 also includes an air outlet section 212, which is horizontally arranged and connected to the air outlet end of the air supply section 211. A vertically arranged connecting pipe 330 is provided on the air outlet section 212. The outlet of the connecting pipe 330 is the outlet 310 at the air outlet end of the air outlet duct 210, and the inlet of the air supply section 211 is the inlet of the air outlet duct 210.

[0056] Preferably, the upper end opening of the connecting pipe 330 is the outlet 310 on the outlet end of the air outlet duct 210, and the air inlet duct 120 is arranged on the upper side of the air outlet duct 210. The lower surface of the air supply section 211 is inclined to guide the water at the outlet end of the air supply section 211 to the air inlet end of the air supply section 211, and the angle between the lower surface of the air supply section 211 and the horizontal plane is greater than or equal to 4°. In the refrigerator provided by the embodiment of the present invention, the lower surface of the air supply section 211 is inclined so that the condensation water in the air supply section 211 can flow along the lower surface of the air supply section 211 to the air inlet end of the air supply section 211, thereby avoiding the accumulation of water in the air outlet duct 210 and affecting the use of the refrigerator. In particular, the condensation water in the air inlet duct 120 is prevented from entering the air supply section 211 and accumulating in the air supply section 211.

[0057] In some embodiments of the present invention, a cooling chamber 220 is provided within the housing 200, and the inlet of the outlet duct 210 is connected to the cooling chamber 220. This allows condensation water within the air supply section 211 to flow along the lower surface of the air supply section 211 toward the air inlet end of the air supply section 211. Specifically, the condensation water within the air supply section 211 flows toward the inlet of the outlet duct 210, ultimately flowing into the cooling chamber 220, and then into the evaporator water receiving box and being discharged, thus preventing the condensation water from flowing freely. This arrangement allows the cooling energy generated by the evaporator within the cooling chamber to be directly utilized.

[0058] In some embodiments of the present invention, housing 200 includes an outlet cover, an outlet base, and an outlet duct. The outlet cover and outlet base are connected and define an outlet section 212 and a portion of an air supply section 211. The outlet duct defines the remainder of the air supply section 211. This arrangement facilitates design, processing, and manufacturing.

[0059] The cabinet 200 has a cabinet storage space, and a part of the air supply section 211, that is, the air outlet duct can be arranged in the cabinet storage space. The air outlet section extends in the left-right direction. The other part of the air supply section 211 can space the air outlet section and the cabinet. The connecting pipe 330 is arranged on the rear side of the air outlet section. The door body also has a makeshift space, and the other part of the air supply section 211 and the air outlet section can be located in the makeshift space of the door body. This arrangement can ensure that the coldness of the air outlet duct will not leak to the outside of the refrigerator, the special structure of the air outlet duct will not cause interference with the rotation of the door body, and the sealing effect of the door body is guaranteed to the greatest extent.

[0060] In some preferred embodiments of the present invention, Figures 7 and 8 As shown, the outlet 310 at the outlet end of the outlet duct 210 is inserted into the inlet at the inlet end of the inlet duct 120. An annular opening groove 320 is provided on the outside of the outlet 310 at the outlet end of the outlet duct 210, coaxial with the rotation axis of the door body 100. The inlet at the inlet end of the inlet duct 120 is inserted into the annular opening groove 320. The inner peripheral wall surface of the annular opening groove 320 forms part or all of the outer peripheral wall surface of the outlet 310 at the outlet end of the outlet duct 210. The use of the annular opening groove 320 provides a better sealing effect between the outlet duct 210 and the inlet duct 120.

[0061] Specifically, a sleeve 340 is mounted on the outside of the connecting tube 330. The sleeve 340 and the connecting tube 330 are connected via a connecting ring, so that the connecting tube 330, the sleeve 340, and the connecting ring define an annular opening groove 320. If there are multiple annular opening grooves 320, there will be multiple corresponding sleeves 340, and the multiple sleeves 340 are sequentially mounted. The inlet at the air inlet end of the corresponding air inlet duct 120 can have multiple insert rings, each of which is inserted into the multiple annular opening grooves 320.

[0062] In some embodiments of the present invention, the distance between one end of the inner circumferential wall surface of the annular opening groove 320 away from the bottom wall surface of the annular opening groove 320 and the bottom wall surface is greater than the distance between one end of the outer circumferential wall surface of the annular opening groove 320 away from the bottom wall surface of the annular opening groove 320 and the bottom wall surface.

[0063] In some embodiments of the present invention, at least one of the inner circumferential wall surface, outer circumferential wall surface, and bottom wall surface of the annular opening groove 320 is spaced apart from the corresponding surface of the inlet at the air inlet end of the air inlet duct 120. Furthermore, when two of the inner circumferential wall surface, outer circumferential wall surface, and bottom wall surface of the annular opening groove 320 are spaced apart from the corresponding surface of the inlet at the air inlet end of the air inlet duct 120, the two spacings are spaced apart at different distances. Optionally, an annular ridge is provided on the inner circumferential wall surface, outer circumferential wall surface, and / or bottom wall surface of the annular opening groove 320, and the annular ridge contacts and abuts the inlet at the air inlet end of the air inlet duct 120. In other embodiments of the present invention, at least one of the inner circumferential wall surface, outer circumferential wall surface, and bottom wall surface of the annular opening groove 320 contacts or abuts the corresponding surface of the inlet at the air inlet end of the air inlet duct 120.

[0064] In some embodiments of the present invention, a chamfer 350 is provided at the inner annular edge of the opening of the annular opening groove 320, and a chamfer 350 is provided at the outer annular edge of the opening of the annular opening groove 320. During installation, the chamfer 350 can guide the insertion of the air inlet end on the air inlet end of the air inlet duct 120, making the installation of the air inlet duct 120 convenient and quick. The connecting pipe 330, the sleeve 340 and the connecting ring can be collectively referred to as the air supply connection device 300. Of course, the annular opening groove 320 can also be opened on a larger supporting surface to form the outlet 310 on the air outlet end of the air outlet duct 210, and the outer side of the outlet 310 has an annular opening groove 320.

[0065] In some embodiments of the present invention, the refrigerator further includes a heating wire 400. The heating wire 400 is disposed on the outer surface of the air outlet duct 210. Specifically, the outer surfaces of the air outlet extension section, the horizontal section, and the air outlet section within the cabinet are all provided with a thin film heating wire. The heating wire 400 is a thin film heating wire. During use, the heating wire 400 heats the air outlet duct 210, ensuring that condensation does not form on the outer surface of the duct. Furthermore, the thin film heating wire is directly applied to the outer surface of the air outlet duct 210, enabling quick and direct heating of the air outlet duct 210, thus saving energy.

[0066] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the refrigerator also includes a humidity sensor 500 and a first temperature sensor 600. The humidity sensor 500 is disposed on the outer surface of the air outlet duct 210. The first temperature sensor 600 is disposed on the outer surface of the air outlet duct 210. The humidity sensor 500 is used to detect the humidity on the outer surface of the air outlet duct 210, and the first temperature sensor 600 is used to detect the temperature on the outer surface of the air outlet duct 210. The condensation temperature condition under the temperature and humidity is determined based on the temperature and humidity, and the air outlet duct 210 is heated to increase the outer surface temperature of the air outlet duct to a value higher than the preset condensation temperature condition, which is 1°C to 3°C. The humidity sensor 500 and the first temperature sensor 600 are disposed on the lower surface of the air outlet extension section.

[0067] In other words, the computer AI processes and dynamically adjusts the heating power according to the real-time condensation conditions to prevent condensation on the surface of the air duct, so that the temperature of the air duct surface is raised to about 1 to 3°C under the existing condensation temperature conditions. Real-time adjustment of the heating power can ensure sufficient heating. Different from the traditional anti-condensation method of wire heating wire + foam layer, the volume of the air duct is greatly reduced, which increases the usable volume of the refrigerator and improves the volume ratio of the refrigerator. Direct heating of the air duct surface is rapid and direct, saving electricity. Specifically, the original wire heating wires are all attached to the inside of the air duct, and the heating is indirectly heated through the air duct. The heating speed of the air duct surface is slow. The original air duct needs to be heated to 8°C above the condensation temperature to prevent condensation on the outer surface of the air duct, which results in high energy consumption.

[0068] In some embodiments of the present invention, the refrigerator further includes a second temperature sensor 700 , which is disposed in the door storage space 110 . The second temperature sensor 700 is used to detect the temperature of the door storage space 110 .

[0069] In some embodiments of the present invention, the door 100 includes an insulating layer, and the door storage space 110 is located inside the insulating layer. Because the door 100 is provided with an independent door storage space 110 wrapped in the insulating layer, the door storage space 110 is cooled and maintained at a low temperature, ensuring independent temperature zone control in the door area to preserve food or items. Therefore, the refrigerator of the present invention can provide a refrigerated space, a 0° space, or a soft freezer space on the door 100. Users can set the temperature zone according to their storage needs, thereby making better use of the refrigerator's storage space and increasing the number of functional partitions in the refrigerator.

[0070] In some embodiments of the present invention, Figure 2 、 Figure 3 As shown, the air inlet duct 120 extends in a vertical direction, and the lower end of the air inlet duct 120 is the air inlet end of the air inlet duct 120. The side wall of the air inlet duct 120 is provided with an air supply hole 121 that communicates with the door storage space 110. The bottom of the door storage space 110 is also provided with a return air hole 111, which communicates with the box storage space of the box body 200. During use, low-temperature air enters the door storage space 110 from the air supply hole 121 of the air inlet duct 120, bringing cooling to the door storage space 110, and then the air flows out of the door storage space 110 from the return air hole 111, forming a cycle.

[0071] In some embodiments of the present invention, the refrigerator further includes a blower and a damper device. The cooling chamber 220 is also connected to the cabinet storage space of the cabinet 200. The damper device is configured to control the connection between the cooling chamber 220 and the cabinet storage space of the cabinet 200 and / or the connection of the air outlet duct. The blower is configured to promote airflow into the cabinet storage space and the air outlet duct 210.

[0072] At this point, those skilled in the art will recognize that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A refrigerator, characterized in that: It comprises a box body and a door body, wherein the door body is rotatably mounted on the box body; The door body has a door body storage space and an air inlet duct connected to the door body storage space, and the box body has an air outlet duct; The outlet end of the air outlet duct and the inlet end of the air inlet duct are connected to rotate around the rotation axis of the door body; the outlet on the outlet end of the air outlet duct is coaxial with the rotation axis of the door body; the inlet on the inlet end of the air inlet duct is coaxial with the rotation axis of the door body; or the surface where the outlet on the outlet end of the air outlet duct is located and the surface where the inlet on the inlet end of the air inlet duct is located are always in contact with and rotate relative to each other, and the outlet on the outlet end of the air outlet duct is always connected to the inlet on the inlet end of the air inlet duct.

2. The refrigerator according to claim 1, wherein: The inlet on the air inlet end of the air inlet duct is inserted into the outlet on the air outlet end of the air outlet duct, or the outlet on the air outlet end of the air outlet duct is inserted into the inlet on the air inlet end of the air inlet duct, or the inlet on the air inlet end of the air inlet duct is aligned with the outlet on the air outlet end of the air outlet duct and contacts each other.

3. The refrigerator according to claim 1, wherein: Also included are air supply fans and damper devices; The air outlet duct includes an air supply section extending in a horizontal direction, the lower surface of the air supply section is inclined to guide water at the air outlet end of the air supply section to the air inlet end of the air supply section, and the angle between the lower surface of the air supply section and the horizontal plane is greater than or equal to 4°; A cooling chamber is provided in the box body, and the inlet of the air outlet duct is communicated with the cooling chamber; The cooling chamber is also in communication with the box storage space of the box; The damper device is configured to control the connection between the cooling chamber and the box storage space of the box and / or the connection of the air outlet duct; The air supply fan is configured to force air flow into the box storage space and the air outlet duct.

4. The refrigerator according to claim 2, wherein: The outlet on the outlet end of the air outlet duct is inserted into the inlet on the inlet end of the air inlet duct. An annular opening groove coaxial with the rotation axis of the door body is provided on the outer side of the outlet on the outlet end of the air outlet duct, and the inlet on the air inlet end of the air inlet duct is inserted into the annular opening groove; The inner peripheral wall surface of the annular opening groove is part or all of the outer peripheral wall surface of the outlet at the outlet end of the air outlet duct; The inner annular edge of the opening of the annular opening groove is provided with a chamfer, and the outer annular edge of the opening of the annular opening groove is provided with a chamfer.

5. The refrigerator according to claim 3, characterized in that The air outlet duct also includes an air outlet section, which is horizontally arranged and connected to the air outlet end of the air supply section; a vertically arranged connecting pipe is provided on the air outlet section, the outlet of the connecting pipe is the outlet on the air outlet end of the air outlet duct, and the inlet of the air supply section is the inlet of the air outlet duct.

6. The refrigerator according to claim 1, wherein: Also includes: A heating wire, which is arranged on the outer surface of the air outlet duct and is a thin film heating wire; A humidity sensor is provided on the outer surface of the air outlet duct; a first temperature sensor, the first temperature sensor being disposed on an outer surface of the air outlet duct; A second temperature sensor is disposed in the door storage space.

7. The refrigerator according to claim 1, wherein The door body includes a heat-insulating insulation layer, and the door body storage space is located inside the heat-insulating insulation layer.

8. The refrigerator according to claim 2, wherein: The opening of the outlet on the outlet end of the air outlet duct faces upward, the air inlet duct extends in a vertical direction, and the lower end of the air inlet duct is the air inlet end of the air inlet duct; the side wall of the air inlet duct is provided with an air supply hole connected to the door storage space; the bottom of the door storage space is also provided with a return air hole, and the return air hole is connected to the box storage space of the box body.

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