Refrigerator

Abstract

The utility model relates to the technical field of refrigeration equipment, and aims to solve the problem that the use experience of a user is reduced due to the fact that food materials stored in a drawer cavity of an air-cooled refrigerator cannot be quickly frozen. The utility model provides a refrigerator. A freezing chamber is arranged in the refrigerator. The freezing drawer is movably arranged in the freezing chamber in the front-back direction, a drawer cavity is formed in the freezing drawer, and the freezing drawer comprises a cold conduction piece located at the bottom of the drawer cavity; the low-temperature refrigerating system is arranged in the box body, is used for providing cooling capacity for the cold conduction piece so as to enable the temperature of the cold conduction piece to be smaller than or equal to minus 30 DEG C, and comprises a refrigerating coil arranged on the cold conduction piece, and a heat exchange working medium flows in the refrigerating coil; and the first end of the telescopic hose communicates with the refrigerating coil, the second end of the telescopic hose penetrates through the wall of the freezing chamber, and the telescopic hose is used for transporting the heat exchange working medium between the cold guide part and the wall of the freezing chamber and adapting to the position change of the freezing drawer in the freezing chamber. According to the utility model, the technical problem is solved.

Description

Technical Field

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

[0002] With the development of science and technology, people's living standards are constantly improving. Refrigerator technology is also constantly being iterated and updated to meet people's needs.

[0003] Currently, in existing technology, some refrigerators have a cold-conducting plate in the freezer compartment and a low-temperature refrigeration system including a Stirling refrigerator and refrigerant circulation pipes. The Stirling refrigerator is located inside the refrigerator. The refrigerant circulation pipes are connected to the cold end of the Stirling refrigerant and pass through the wall of the freezer compartment, positioned on the cold-conducting plate. This allows the cold air from the cold end of the Stirling refrigerator to be transferred to the cold-conducting plate, quickly freezing food placed on it. However, when a freezer drawer is installed in the freezer compartment, and the cold-conducting plate is placed inside the drawer cavity, the refrigerant circulation pipes, being metal, cannot adapt to changes in the position of the freezer drawer within the freezer compartment. Consequently, the low-temperature refrigeration system cannot provide cold air to the cold-conducting plate through the refrigerant circulation pipes, and the refrigerator cannot quickly freeze food stored in the drawer cavity, resulting in a reduced user experience. Utility Model Content

[0004] One objective of this invention is to provide a refrigerator that can solve at least one of the technical defects in the prior art.

[0005] A further objective of this invention is to enable the air-cooled refrigerator to quickly freeze food stored in the drawer compartments, thereby improving the user experience.

[0006] Specifically, this utility model provides a refrigerator, which includes:

[0007] The cabinet contains a freezer compartment.

[0008] A freezer drawer is movably disposed in a freezer compartment in a front-to-back direction, and has a drawer cavity therein, which includes a cooling guide located at the bottom of the drawer cavity;

[0009] A low-temperature refrigeration system, installed inside the enclosure, provides cooling to the cooling components to maintain a temperature of -30 degrees Celsius or lower on the components, including:

[0010] Refrigeration coils are installed on the cooling conductors, and heat exchange working fluid flows inside them;

[0011] The flexible hose has one end connected to the refrigeration coil and the other end inserted through the wall of the freezer compartment. It is used to transport the heat exchange medium between the heat-conducting components and the wall of the freezer compartment and to accommodate changes in the position of the freezer drawer within the freezer compartment.

[0012] Furthermore, the telescopic hose is bent and coiled in either direction.

[0013] Furthermore, the telescopic hose is coiled in a disc shape, with one end of the telescopic hose coiled around its center and the other end coiled around its edge.

[0014] Furthermore, the telescopic hose is spirally coiled in the front-to-back direction and is located below the freezer drawer; or, the telescopic hose is S-shaped and coiled.

[0015] Furthermore, the refrigeration coil is bent and coiled on the cooling conductor.

[0016] Furthermore, the cryogenic refrigeration system also includes:

[0017] The Stirling refrigeration unit is located at the bottom of the enclosure.

[0018] A heat exchanger, located on the cold end of a Stirling refrigerator, includes a heat exchange base plate and heat exchange tubes located on the heat exchange base plate. The second end of a flexible hose is connected to the heat exchange tubes to facilitate the transfer of cold energy from the cold end of the Stirling refrigerator to the heat-conducting components.

[0019] Furthermore, a foam layer is provided between the cabinet and the freezer compartment. The cold end and heat exchanger of the Stirling refrigerator are located within the foam layer to limit the leakage of cold air at the cold end and heat exchanger of the Stirling refrigerator.

[0020] Furthermore, the cryogenic refrigeration system also includes a connecting pipe that connects the second end of the telescopic flexible hose and the heat exchange tube. The connecting pipe extends in the vertical direction and is arranged within the foam layer.

[0021] Furthermore, a cooling chamber is provided at the bottom of the cabinet, and an air supply duct is provided at the rear of the freezer compartment; and,

[0022] A cold air duct is installed between the top of the freezer drawer and the top wall of the freezer compartment, and the cold air duct is connected to the air supply channel; and,

[0023] The drawer cavity has an upward-facing access opening at the top; and,

[0024] The refrigerator also includes:

[0025] A vapor compression refrigeration system includes a cooling fan and a compressor, condenser, throttling device and evaporator connected in sequence. The cooling fan and evaporator are located in the cooling chamber. The cooling fan is used to guide the refrigerated airflow after heat exchange with the evaporator through the air supply channel into the air-cooled cooling duct.

[0026] A circulating fan is installed inside the air-cooled cooling duct, with its air outlet facing the drawer cavity. When the fan is running, it is used to encourage the flow of refrigerant air from the air-cooled cooling duct into the drawer cavity.

[0027] Furthermore, a foam layer is provided between the cabinet and the freezer compartment, and the cold end, hot end, and heat exchanger of the Stirling refrigerator are disposed within the foam layer; and,

[0028] The vapor compression refrigeration system includes an evaporator coil connected in parallel to the evaporator, and the evaporator coil is arranged at the hot end of the Stirling refrigeration machine to dissipate heat from the hot end of the Stirling refrigeration machine.

[0029] This refrigerator, by incorporating a cooling coil on the cold-conducting component and a flexible telescopic hose between the cooling coil and the wall of the freezer compartment, adapts to changes in the freezer drawer's position within the freezer compartment. The low-temperature refrigeration system can then supply its heat exchange medium from the freezer compartment wall to the cooling coil via the telescopic hose. Thus, the low-temperature refrigeration system provides cooling capacity to the cold-conducting component through the telescopic hose and the cooling coil. Therefore, this refrigerator can rapidly freeze food stored in the drawer compartments, ensuring a superior user experience.

[0030] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0031] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0032] Figure 1 This is a schematic diagram of the structure of a refrigerator according to an embodiment of the present invention;

[0033] Figure 2 This is one of the internal structural schematic diagrams of a refrigerator according to an embodiment of the present invention;

[0034] Figure 3 This is a cross-sectional schematic diagram of the freezer drawer in a refrigerator according to an embodiment of the present invention;

[0035] Figure 4 This is an exploded view of a refrigerator according to an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the heterogeneous phase separator in a refrigerator according to an embodiment of the present invention;

[0037] Figure 6 This is a second schematic diagram of the internal structure of a refrigerator according to an embodiment of the present invention;

[0038] Figure 7 yes Figure 6 Enlarged diagram of section "A" in the image;

[0039] Figure 8 This is a schematic diagram of the structure of a telescopic hose in a refrigerator according to an embodiment of the present invention;

[0040] Figure 9 This is one of the schematic diagrams showing the connection structure of the refrigeration coil and the cold-conducting component in a refrigerator according to an embodiment of the present invention;

[0041] Figure 10 This is the second schematic diagram of the connection structure of the refrigeration coil and the cold-conducting component in a refrigerator according to an embodiment of the present invention. Detailed Implementation

[0042] In the description of this embodiment, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention 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. Therefore, they should not be construed as limitations on the present invention.

[0043] 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, that is, include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically stated, this indicates that other features are not excluded and may be further included.

[0044] Unless otherwise expressly specified and limited, the terms "installation," "setup," and "connection" 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 should be able to understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] Unless otherwise specified, all terms (including technical and scientific terms) used in the description of these embodiments have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0047] In the description of this embodiment, the reference to terms such as "embodiment," "embodiment mode," etc., means 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 the present invention. 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.

[0048] The following is combined with Figures 1 to 10 The refrigerator of this embodiment will be described in detail below. Among them, Figure 2 and Figure 6 The hollow arrows in the diagram indicate the flow path and direction of the cooling airflow.

[0049] In existing technology, the freezer compartment of a frost-free refrigerator is equipped with a freezer drawer. Freezing airflow is circulated around the drawer to freeze the food inside. This prevents the freezing airflow from directly contacting the food and avoids blowing directly on it, thus better preserving the food's moisture. However, this freezing method is slow and cannot meet the storage needs of some foods that require rapid freezing (such as seafood), thereby failing to meet user needs and resulting in a reduced user experience.

[0050] Reference Figure 1 , Figure 2 and Figure 3 In this embodiment, the refrigerator includes a cabinet 100, a freezer drawer 200, and a low-temperature refrigeration system 300.

[0051] The cabinet 100 is equipped with a freezer compartment 110.

[0052] The freezer drawer 200 is disposed in the freezer compartment 110, and the freezer drawer 200 is provided with a drawer cavity 210. The freezer drawer 200 includes a cooling guide 220 located at the bottom of the drawer cavity 210.

[0053] The low-temperature refrigeration system 300 is installed inside the enclosure 100. The low-temperature refrigeration system 300 is used to provide cooling to the cooling component 220 so that the temperature on the cooling component 220 is less than or equal to minus 30 degrees Celsius.

[0054] In this embodiment of the refrigerator, because a cooling guide 220 is provided at the bottom of the drawer cavity 210, food can be placed directly on the cooling guide 220 when storing food in the drawer cavity 210. The cooling guide 220 can then directly transfer its cold energy to the food. Furthermore, the cold energy on the cooling guide 220 is provided by the refrigerator's low-temperature refrigeration system 300, which can ensure that the temperature on the cooling guide 220 is less than or equal to -30 degrees Celsius. All of these factors contribute to the rapid freezing of the food in the drawer cavity 210. Therefore, the refrigerator of this embodiment can rapidly freeze food, meeting the user's need for quick freezing and improving the user experience.

[0055] Reference Figure 2 and Figure 3 In the first embodiment of the low-temperature refrigeration system 300 of this example, a cooling duct 230 is provided at the bottom of the freezer drawer 200. The cooling duct 230 is located below the drawer cavity 210, and the cooling component 220 is located between the drawer cavity 210 and the cooling duct 230.

[0056] The bottom of the cabinet 100 is provided with a cooling cavity 120, and the rear of the freezer compartment 110 is provided with an air supply duct 130, which is connected between the cooling cavity 120 and the cooling air duct 230.

[0057] The low-temperature refrigeration system 300 includes a refrigeration unit 310 and a cooling fan 320. At least a portion of the refrigeration unit 310 is disposed within the cooling chamber 120, and the refrigeration unit 310 is used to provide cooling capacity. The cooling fan 320 is disposed within the cooling chamber 120, and the cooling fan 320 is used to guide the frozen airflow after heat exchange with the refrigeration unit 310 through the air supply channel 130 into the cooling airflow duct 230, and the cooling element 220 is used to exchange heat with the frozen airflow in the cooling airflow duct 230 to cool the food placed on it.

[0058] It is understandable that the low-temperature refrigeration system 300 can provide the cooling capacity of the refrigeration unit 310 to the cooling conductor 220 in the form of airflow, and this can be achieved by constructing the cooling supply air duct 230 and the cooling chamber 120 in conjunction with the cooling fan 320.

[0059] Reference Figure 2 and Figure 3 In this embodiment, a cooling air duct 140 is provided between the top of the freezer drawer 200 and the top wall of the freezer compartment 110, and the cooling air duct 140 is connected to the air supply duct 130.

[0060] The top of the drawer cavity 210 has an upward-facing access port 211. The cooling fan 320 is used to guide the refrigerated airflow after heat exchange with the refrigeration unit 310 through the air supply channel 130 into the air-cooled cooling duct 140.

[0061] The refrigerator also includes a circulating fan 700. The circulating fan 700 is located in the air-cooled cooling duct 140, and the air outlet of the circulating fan 700 faces the drawer cavity 210. The circulating fan 700 is used to cause the refrigerant air in the air-cooled cooling duct 140 to flow into the drawer cavity 210 when it is in the activated state.

[0062] It is understandable that by setting up the circulating fan 700 and constructing the air-cooled cooling duct 140, the freezing airflow provided by the low-temperature refrigeration system 300 is guided into the drawer cavity 210, so as to further improve the freezing speed of food in the drawer cavity 210, further ensure the refrigerator's quick-freezing effect on food, and ensure the user's experience.

[0063] Reference Figure 4Additionally, the refrigerator may include an air duct plate 500, which is disposed at the rear of the freezer compartment 110. The air supply duct 130 may be located between the air duct plate 500 and the rear wall of the freezer compartment 110. A cold air outlet 510 is provided on the air duct plate 500 at a position corresponding to the cold air supply duct 230 to connect the air supply duct 130 and the cold air supply duct 230; and a cold air outlet 520 is provided on the air duct plate 500 at a position corresponding to the cold air supply duct 140 to connect the air supply duct 130 and the cold air supply duct 140.

[0064] Furthermore, referring to Figure 4 A drawer top cover 240 is also provided at the access port 211, and a circulating air vent 241 is opened on the drawer top cover 240. The circulating fan 700 is located at the circulating air vent 241. Therefore, when the circulating fan 700 is stopped, the drawer top cover 240 can restrict the flow of the freezing air in the air-cooled cooling duct 140 into the drawer cavity 210, so as to avoid the freezing air directly blowing on the food in the drawer cavity 210 and avoid moisture loss of the food. Combined with the quick-freezing effect of the cooling guide 220, the refrigerator of this embodiment can not only achieve quick freezing of food, but also effectively ensure the frozen quality of the food.

[0065] In some alternative implementations, the refrigerator may include a conventional refrigeration cycle system, and a separate cooling chamber 120 and air supply duct 130 may be provided within the cabinet 100. This allows the conventional refrigeration cycle system to provide a separate cooling airflow to the air-cooled cooling duct 140, and the cooling airflow provided by the conventional refrigeration cycle system is delivered to the drawer cavity 210. This also improves the freezing speed of food in the drawer cavity 210, further ensuring the refrigerator's rapid freezing effect and guaranteeing the user experience.

[0066] Reference Figure 2 In this embodiment, the cryogenic refrigeration system 300 includes a Stirling refrigerator 330.

[0067] The Stirling refrigerator 330 is located at the bottom of the housing 100. The refrigeration unit 310 includes the cold end 311 of the Stirling refrigerator 330 and a heat exchanger 312 connected to the cold end 311 of the Stirling refrigerator 330. The heat exchanger 312 is located in the cooling chamber 120. The cooling fan 320 is used to guide the refrigerated airflow after heat exchange with the heat exchanger 312 through the air supply channel 130 into the cooling air duct 230 and the air-cooled cooling air duct 140.

[0068] It is understandable that the low-temperature refrigeration system 300 can be a refrigeration system composed of a Stirling refrigerator 330. Furthermore, the temperature of the cold end 311 of the Stirling refrigerator 330 can reach -200°C, which can cause the temperature of the cooling component 220 to be lower than -30°C, and deliver the freezing airflow into the air-cooled cooling duct 140 to ensure that the refrigerator can freeze food quickly.

[0069] Furthermore, the heat exchanger 312 ensures the heat exchange efficiency and heat exchange capacity between the cold end 311 of the Stirling refrigerator 330 and the airflow that exchanges heat with it, thereby further ensuring the refrigerator's quick-freezing effect on food.

[0070] In some alternative embodiments, the low-temperature refrigeration system 300 may be a refrigeration cycle system including a compressor, condenser, throttling device, and evaporator 420. The compressor, condenser, throttling device, and evaporator 420 are connected sequentially. Furthermore, a low-temperature refrigerant may be used to achieve a temperature below -30°C for the cooling conductor 220. Examples include refrigerants such as R23, R508B, and R404A. In this case, the refrigeration unit 310 may include the evaporator 420. The evaporator 420 is disposed within the cooling chamber 120, and the cooling fan 320 guides the frozen airflow after heat exchange with the evaporator 420 through the air supply channel 130 into the cooling air duct 230 and the air-cooled cooling air duct 140, thereby ensuring that the refrigerator can quickly freeze food.

[0071] In some alternative embodiments, the low-temperature refrigeration system 300 can be a stacked refrigeration cycle system. For example, a two-stage stacked refrigeration system or a three-stage stacked refrigeration system. Each stage of the refrigeration system is a refrigeration cycle system including a compressor, a condenser, a throttling device, and an evaporator 420. The compressor, condenser, throttling device, and evaporator 420 are connected in sequence. The two stages of the refrigeration cycle system are connected by connecting the evaporator 420 and the condenser. The evaporator 420 of the low-temperature stage is located in the cooling chamber 120. The cooling fan 320 is used to guide the frozen airflow after heat exchange with the evaporator 420 through the air supply channel 130 into the cooling air supply duct 230, so as to make the temperature of the cooling component 220 lower than -30°C, and deliver the frozen airflow into the air-cooled cooling air supply duct 140 to ensure that the refrigerator can quickly freeze the food.

[0072] Reference Figure 2 and Figure 5 In this embodiment, a heterogeneous separator 600 is provided in the cooling chamber 120. The heterogeneous separator 600 is located between the refrigeration section 310 (located in the part of the cooling chamber 120, i.e. the aforementioned heat exchanger 312 / evaporator 420) and the air supply channel 130. The heterogeneous separator 600 is used to remove frost from the freezing airflow.

[0073] Understandably, due to the low temperature of the cooling section 310 in the low-temperature refrigeration system 300, frost will form on the cooling section 310. Consequently, after the airflow passes through the cooling section 310 for heat exchange, it will carry the frost into the freezer compartment. Therefore, by setting up a heterogeneous phase separator 600, the frost in the freezing airflow can be removed, preventing frost from being blown into the freezer compartment and ensuring a good user experience.

[0074] In this embodiment, the air inlet 610 of the heterogeneous separator 600 is connected to the air outlet of the refrigeration unit 310, the gas phase outlet 620 of the heterogeneous separator 600 is connected to the air supply channel 130, and the solid phase outlet 630 of the heterogeneous separator 600 is connected to the bottom of the refrigeration unit 310.

[0075] Understandably, by connecting / extending the solid outlet 630 of the heterogeneous separator 600 to / from the bottom of the refrigeration section 310, the frost removed by the heterogeneous separator 600 can be transported to the bottom (in the drip tray) of the refrigeration section 310 (located in the portion of the cooling chamber 120, i.e., the aforementioned evaporator 420 / heat exchanger 312). When the refrigeration section 310 heats up to defrost, the frost at the bottom of the refrigeration section 310 melts and is discharged to the outside of the cabinet 100 or discharged into the evaporator tray of the refrigerator.

[0076] Reference Figure 6 In the second embodiment of the low-temperature refrigeration system 300 of this example, the freezer drawer 200 is movably disposed in the freezer compartment 110 in the front-to-back direction; and the low-temperature refrigeration system 300 includes a refrigeration coil 340 and a telescopic hose 350.

[0077] The refrigeration coil 340 is mounted on the cooling conductor 220. A heat exchange medium flows inside the refrigeration coil 340 to provide cooling capacity to the cooling conductor 220.

[0078] The first end of the telescopic hose 350 is connected to the refrigeration coil 340, and the second end of the telescopic hose 350 is inserted through the wall of the freezer compartment 110. The telescopic hose 350 is used to transport the heat exchange medium between the heat conduction component 220 and the wall of the freezer compartment 110 and to adapt to the positional changes of the freezer drawer 200 in the freezer compartment 110.

[0079] Because the refrigerator in this embodiment has a cooling coil 340 on the cooling guide 220, and a flexible hose 350 between the cooling coil 340 and the wall of the freezer compartment 110, the flexible hose 350 can adapt to the positional changes of the freezer drawer 200 within the freezer compartment 110. Therefore, the low-temperature refrigeration system 300 can supply its heat exchange medium from the wall of the freezer compartment 110 to the cooling coil 340 through the flexible hose 350. Thus, the low-temperature refrigeration system 300 can provide cooling capacity to the cooling guide 220 through the flexible hose 350 and the cooling coil 340. Therefore, the refrigerator in this embodiment can quickly freeze food stored in the drawer cavity 210, ensuring a better user experience.

[0080] Of course, it should be noted that in the first embodiment of the aforementioned low-temperature refrigeration system 300, the low-temperature refrigeration system 300 provides the cooling capacity of the refrigeration unit 310 to the cooling conductor 220 in the form of airflow, without considering the positional changes of the freezer drawer 200 within the freezer compartment 110.

[0081] Reference Figure 6 and Figure 8 In this embodiment, the telescopic hose 350 is bent and coiled in any direction so that the entire telescopic hose 350 can occupy as little space as possible in other directions in the freezer compartment 110, thus ensuring the storage space of the drawer cavity 210 and the user experience.

[0082] Reference Figure 8 In this embodiment, the telescopic hose 350 is coiled in a disc shape, with one end of the telescopic hose 350 coiled in the middle and the other end coiled around its edge.

[0083] Understandably, the telescopic hose 350 can be arranged parallel to the rear wall of the freezer compartment 110 between the rear wall of the freezer compartment 110 and the freezer drawer 200 to ensure the space of the freezer compartment 110 in the front-back direction; or, the telescopic hose 350 can be arranged parallel to the left / right side walls of the freezer compartment 110 between the left / right side walls of the freezer compartment 110 and the freezer drawer 200 to ensure the space of the freezer compartment 110 in the left / right direction, ensure the storage space of the drawer cavity 210, and ensure the user's experience.

[0084] Reference Figure 6 In this embodiment, the telescopic hose 350 is spirally coiled in the front-to-back direction and is located below the freezer drawer 200.

[0085] It is understandable that the telescopic hose 350 can also be spirally bent and coiled in the front and back direction, and the telescopic hose 350 can be located below the freezer drawer 200 to ensure the vertical space of the freezer compartment 110, the storage space of the drawer cavity 210, and the user experience.

[0086] In this embodiment, the telescopic hose is arranged in an S-shape with a coiled configuration (e.g., as shown in the image). Figure 9 The freezer coils are arranged in an S-shape to ensure sufficient storage space in the drawer cavity 210 and to guarantee a good user experience. Specifically, the flexible retractable hoses can be installed on the rear wall, left side wall, right side wall, or bottom surface of the freezer compartment.

[0087] Reference Figure 9 and Figure 10 In this embodiment, the refrigeration coil 340 is bent and coiled around the cold-conducting component 220. This ensures that the cooling capacity exchanged by the refrigeration coil 340 onto the cold-conducting component 220 is maintained, thus ensuring the rapid freezing effect of the refrigerator and the user experience.

[0088] Specifically, the cooling coil 340 can be arranged in multiple nested rings on the cooling conductor 220, or it can be arranged in an S-shape on the cooling conductor 220.

[0089] Reference Figure 6 In this embodiment, the cooling coil 340 can be arranged on the lower side of the cooling conductor 220 or pass through the cooling conductor 220.

[0090] Reference Figure 6 and Figure 7 In this embodiment, the cryogenic refrigeration system 300 also includes a Stirling refrigerator 330 and a heat exchanger 360.

[0091] The Stirling refrigeration unit 330 is located at the bottom of the enclosure 100.

[0092] The heat exchanger 360 is disposed on the cold end 311 of the Stirling refrigerator 330. The heat exchanger 360 includes a heat exchange base 361 and a heat exchange tube 362 disposed on the heat exchange base 361. The second end of the telescopic hose 350 is connected to the heat exchange tube 362 to facilitate the transfer of cold energy on the cold end 311 of the Stirling refrigerator 330 to the heat conduction component 220.

[0093] It is understandable that the low-temperature refrigeration system 300 can be a refrigeration system composed of a Stirling refrigerator 330. Furthermore, the temperature of the cold end 311 of the Stirling refrigerator 330 can reach -200°C, which can cause the temperature of the cooling component 220 to be lower than -30°C, and deliver the freezing airflow into the air-cooled cooling duct 140 to ensure that the refrigerator can freeze food quickly.

[0094] Furthermore, the arrangement of the heat exchanger 360 ensures the heat exchange efficiency and heat capacity between the cold end 311 of the Stirling refrigerator 330 and the heat exchange medium, thereby further guaranteeing the refrigerator's quick-freezing effect on food.

[0095] Reference Figure 6 and Figure 7 In this embodiment, a foam layer 150 is provided between the cabinet 100 and the freezer compartment 110.

[0096] Reference Figure 6 and Figure 7 In this embodiment, the cold end 311 of the Stirling refrigerator 330 and the heat exchanger 360 are disposed within the foam layer 150 to limit the leakage of cold air at the cold end 311 of the Stirling refrigerator 330 and the heat exchanger 360, thereby further ensuring the quick-freezing effect of the refrigerator on food.

[0097] Reference Figure 6 and Figure 7 In this embodiment, the low-temperature refrigeration system 300 also includes a connecting pipe 370 connected between the second end of the telescopic flexible hose 350 and the heat exchange tube 362. The connecting pipe 370 extends in the vertical direction and is arranged within the foam layer 150 to realize the transport of the heat exchange medium between the heat exchange tube 362 and the telescopic flexible hose 350, and to limit the loss of cold energy of the cold end 311 of the Stirling refrigerator 330 during the transport of the cold-guided cooling element 220, thereby further ensuring the quick-freezing effect of the refrigerator on food.

[0098] In some alternative embodiments, the cryogenic refrigeration system 300 may be a refrigeration cycle system further comprising a compressor, a condenser, and a throttling device, wherein the compressor, condenser, throttling device, and refrigeration coil 340 are connected in sequence, and the outlet and inlet of the refrigeration coil 340 are respectively connected to a compression-evaporation type refrigeration cycle system via telescopic hoses 350. Furthermore, a cryogenic refrigerant may be used to achieve a temperature below -30°C for the cooling conductor 220. Examples of refrigerants include R23, R508B, and R404A.

[0099] In other alternative embodiments, the low-temperature refrigeration system 300 can be a stacked refrigeration cycle system. For example, a two-stage stacked refrigeration system or a three-stage stacked refrigeration system. Each stage of the refrigeration cycle system includes a compressor, a condenser, a throttling device, and an evaporator 420. The compressor, condenser, throttling device, and evaporator 420 are connected sequentially. The low-temperature stage refrigeration cycle system consists of a compressor, condenser, throttling device, and refrigeration coil 340 connected sequentially. The outlet and inlet of the refrigeration coil 340 are connected to the low-temperature stage refrigeration cycle system via flexible hoses 350 to ensure that the temperature of the cooling element 220 is below -30°C, allowing the refrigerator to freeze food quickly.

[0100] Reference Figure 6 In this embodiment, a cooling chamber 120 is provided at the bottom of the cabinet 100, and an air supply duct 130 is provided at the rear of the freezer compartment 110.

[0101] A cooling duct 140 is provided between the top of the freezer drawer 200 and the top wall of the freezer compartment 110, and the cooling duct 140 is connected to the air supply duct 130.

[0102] The top of the drawer cavity 210 has an upward-facing access opening 211. The refrigerator also includes a vapor compression refrigeration system 400.

[0103] The vapor compression refrigeration system 400 includes a cooling fan 410 and a compressor, condenser, throttling device and evaporator 420 connected in sequence. The cooling fan 410 and evaporator 420 are located in the cooling chamber 120. The cooling fan 410 is used to guide the refrigerated airflow after heat exchange with the evaporator 420 through the air supply channel 130 into the air-cooled cooling duct 140.

[0104] The circulating fan 700 is installed in the air-cooled cooling duct 140, and the fan outlet of the circulating fan 700 faces the drawer cavity 210. The circulating fan 700 is used to cause the refrigerant air in the air-cooled cooling duct 140 to flow into the drawer cavity 210 when it is in the start-up state.

[0105] It is understandable that by setting up the circulating fan 700 and constructing the air-cooled cooling duct 140, cooling chamber 120 and air supply channel 130, the freezing airflow provided by the vapor compression refrigeration system 400 is guided into the drawer cavity 210, so as to further improve the freezing speed of food in the drawer cavity 210, further ensure the refrigerator's quick-freezing effect on food, and ensure the user's experience.

[0106] Of course, the refrigerant circulating in the vapor compression refrigeration system 400 in this embodiment can be a refrigerant commonly used in household refrigerators, such as R600A and R134a; or it can be a low-temperature refrigerant such as R23, R508B, and R404A.

[0107] Reference Figure 4 Additionally, the refrigerator may include an air duct plate 500, which is disposed at the rear of the freezer compartment 110. The air supply duct 130 may be located between the air duct plate 500 and the rear wall of the freezer compartment 110. An air-cooled air outlet 520 is provided on the air duct plate 500 at a position corresponding to the air-cooled cooling duct 140 to achieve communication between the air supply duct 130 and the air-cooled cooling duct 140.

[0108] Furthermore, referring to Figure 4A drawer top cover 240 is also provided at the access port 211, and a circulating air vent 241 is opened on the drawer top cover 240. The circulating fan 700 is located at the circulating air vent 241. Therefore, when the circulating fan 700 is stopped, the drawer top cover 240 can restrict the flow of the freezing air in the air-cooled cooling duct 140 into the drawer cavity 210, so as to avoid the freezing air directly blowing on the food in the drawer cavity 210 and avoid moisture loss of the food. Combined with the quick-freezing effect of the cooling guide 220, the refrigerator of this embodiment can not only achieve quick freezing of food, but also effectively ensure the frozen quality of the food.

[0109] In some alternative embodiments, the vapor compression refrigeration system 400 can be replaced by the low-temperature refrigeration system 300 in the first embodiment of the low-temperature refrigeration system 300, which exchanges heat in the form of airflow. In conjunction with the low-temperature refrigeration system 300 in this embodiment, which provides cooling capacity to the cooling conductor 220 via a telescopic hose 350, the freezing speed of food within the drawer cavity 210 can be further improved, ensuring the refrigerator's rapid freezing effect and enhancing the user experience.

[0110] Reference Figure 7 In this embodiment, the cold end 311, the hot end 331, and the heat exchanger 360 of the Stirling refrigerator 330 are disposed within the foam layer 150. The vapor compression refrigeration system 400 includes an evaporator coil 430 connected in parallel to the evaporator 420, and the evaporator coil 430 is arranged at the hot end 331 of the Stirling refrigerator 330 to dissipate heat from the hot end 331 of the Stirling refrigerator 330.

[0111] Understandably, due to the structural limitations of the Stirling refrigerator 330, the distance between the cold end 311 and the hot end 331 of the Stirling refrigerator 330 is approximately 50mm. Therefore, to minimize cold leakage at the cold end 311, the hot end 331 can be arranged together with the cold end within the foam layer 150. Alternatively, this can be understood as increasing the height of the foam layer 150 along the direction from the cold end 311 to the hot end 331 of the Stirling refrigerator 330. This embodiment further limits cold leakage between the cold end 311 of the Stirling refrigerator 330 and the heat exchanger 360, further ensuring the refrigerator's rapid freezing effect on food.

[0112] Furthermore, since the hot end 331 of the Stirling refrigerator is covered by the foam layer 150, the hot end 331 of the Stirling refrigerator can no longer dissipate heat to the surrounding environment. Therefore, the vapor compression refrigeration system 400 can be used to dissipate heat from the hot end 331 of the Stirling refrigerator, so as to ensure the refrigeration performance of the cold end 311 of the Stirling refrigerator 330 and ensure the quick-freezing effect of the refrigerator on food.

[0113] Reference Figure 1 and Figure 4 In this embodiment, the front side of the cabinet 100 is provided with an access port 111 that connects to the freezer compartment 110. The refrigerator also includes a drawer door 800, which is located at the access port 111 and is connected to the freezer drawer 200.

[0114] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can 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 recognized as covering all such other variations or modifications.

Claims

1. A refrigerator, characterized in that, include: The cabinet contains a freezer compartment. A freezer drawer is movably disposed in the freezer compartment in the front-to-back direction, and has a drawer cavity therein, which includes a cooling guide located at the bottom of the drawer cavity; A low-temperature refrigeration system, installed inside the enclosure, is used to provide cooling to the cooling conductor to reduce the temperature on the cooling conductor to less than or equal to -30 degrees Celsius, including: A cooling coil is disposed on the cooling conductor, and a heat exchange medium flows inside it to provide cooling capacity to the cooling conductor. A flexible telescopic hose, with its first end connected to the refrigeration coil and its second end passing through the wall of the freezer compartment, is used to transport the heat exchange medium between the heat-conducting component and the wall of the freezer compartment and to accommodate changes in the position of the freezer drawer within the freezer compartment.

2. The refrigerator according to claim 1, characterized in that, The telescopic hose is bent and coiled in any direction.

3. The refrigerator according to claim 2, characterized in that, The telescopic hose is coiled in a disc shape, with one end coiled around its center and the other end coiled around its edge.

4. The refrigerator according to claim 2, characterized in that, The telescopic hose is spirally coiled in the front-to-back direction, and is located below the freezer drawer; or, The flexible hose is arranged in an S-shape with a coiled configuration.

5. The refrigerator according to claim 1, characterized in that, The refrigeration coil is bent and coiled around the cooling conductor.

6. The refrigerator according to claim 1, characterized in that, The cryogenic refrigeration system also includes: A Stirling refrigeration unit is located at the bottom of the enclosure. A heat exchanger, disposed on the cold end of the Stirling refrigerator, includes a heat exchange base plate and a heat exchange tube disposed on the heat exchange base plate. The second end of the telescopic flexible hose is connected to the heat exchange tube to facilitate the transfer of cold energy from the cold end of the Stirling refrigerator to the heat-conducting component.

7. The refrigerator according to claim 6, characterized in that, A foam layer is provided between the housing and the freezer compartment. The cold end of the Stirling refrigerator and the heat exchanger are located within the foam layer to limit the leakage of cold air at the cold end of the Stirling refrigerator and the heat exchanger.

8. The refrigerator according to claim 7, characterized in that, The cryogenic refrigeration system further includes a connecting pipe connecting the second end of the telescopic hose and the heat exchange tube, the connecting pipe extending in the vertical direction and disposed within the foam layer.

9. The refrigerator according to claim 6, characterized in that, The bottom of the cabinet is provided with a cooling cavity, and the rear of the freezer compartment is provided with an air supply duct; and, A cooling air duct is provided between the top of the freezer drawer and the top wall of the freezer compartment, and the cooling air duct is connected to the air supply channel. as well as, The top of the drawer cavity has an upward-facing access opening; as well as, The refrigerator also includes: A vapor compression refrigeration system includes a cooling fan and a compressor, a condenser, a throttling device and an evaporator connected in sequence. The cooling fan and the evaporator are disposed in the cooling chamber. The cooling fan is used to guide the refrigerated airflow after heat exchange with the evaporator through the air supply channel into the air-cooled cooling duct. A circulating fan is installed inside the air-cooled cooling duct, with its air outlet facing the drawer cavity. When the fan is activated, it is used to cause the refrigerant airflow in the air-cooled cooling duct to flow into the drawer cavity.

10. The refrigerator according to claim 9, characterized in that, A foam layer is provided between the cabinet and the freezer compartment, and the cold end of the Stirling refrigerator, the hot end of the Stirling refrigerator, and the heat exchanger are disposed within the foam layer; and, The vapor compression refrigeration system includes an evaporator coil connected in parallel to the evaporator, and the evaporator coil is arranged at the hot end of the Stirling refrigerator to dissipate heat from the hot end of the Stirling refrigerator.

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