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 cannot be quickly frozen by an air-cooled refrigerator. The utility model provides a refrigerator which comprises a refrigerator body, a refrigerator door and a refrigerator door, the freezing drawer is arranged in the freezing chamber, 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; and the low-temperature refrigerating system is arranged in the box body and is used for providing cooling capacity for the cold conducting piece so as to enable the temperature of the cold conducting piece to be smaller than or equal to minus 30 DEG C. According to the utility model, the technical problem is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration equipment technical field, in particular to a refrigerator. BACKGROUND

[0002] With the development of science and technology, people's living standards are constantly improving. The technology of refrigerator is also constantly updated to meet people's use demand.

[0003] At present, in the prior art, the freezing chamber of the air-cooled refrigerator is provided with a freezing drawer, and the freezing air flow is caused to flow around the freezing drawer to realize the freezing of the food in the freezing drawer. In this way, the freezing air flow does not directly contact the food in the freezing drawer, and the freezing air flow does not directly blow the food, which can better ensure that the moisture of the food is not lost. However, such freezing method is slow in the freezing process of the food, which cannot meet the storage needs of some food (such as aquatic products) that need to be quickly frozen, and thus cannot meet the use demand of the user, resulting in the reduction of the use experience of the user. SUMMARY

[0004] An object of the utility model is to provide a refrigerator which can solve at least one technical defect in the prior art.

[0005] A further object of the utility model is to enable the air-cooled refrigerator to quickly freeze the food, meet the use demand of the user that the food needs to be quickly frozen, and improve the use experience of the user.

[0006] In particular, the utility model provides a refrigerator, which comprises:

[0007] a cabinet, which is provided with a freezing compartment inside;

[0008] a freezing drawer, which is arranged in the freezing compartment and is provided with a drawer cavity inside, and comprises a cold guide arranged at the bottom of the drawer cavity;

[0009] a low-temperature refrigeration system, which is arranged in the cabinet and is used for providing cold to the cold guide to cause the temperature on the cold guide to be less than or equal to minus 30 degrees Celsius.

[0010] Further, the bottom of the freezing drawer is provided with a cold supply air duct, the cold supply air duct is located below the drawer cavity, and the cold guide is located between the drawer cavity and the cold supply air duct; and

[0011] the bottom of the cabinet is provided with a cold supply cavity, the rear part of the freezing compartment is provided with an air supply channel, and the air supply channel is communicated between the cold supply cavity and the cold supply air duct; and

[0012] the low-temperature refrigeration system comprises:

[0013] The refrigeration part is arranged at least partially in the cooling cavity and is configured to provide cold energy.

[0014] The cooling fan is arranged in the cooling cavity and is configured to guide the refrigerated air flow after heat exchange with the refrigeration part to flow into the cold air supply channel through the air supply passage.

[0015] Further, the air-cooled cooling air channel is arranged between the top of the refrigeration drawer and the top wall of the refrigeration compartment and is communicated with the air supply passage.

[0016] The top of the drawer cavity is provided with a taking opening upwardly, and the cooling fan is configured to guide the refrigerated air flow after heat exchange with the refrigeration part to flow into the air-cooled cooling air channel through the air supply passage.

[0017] The refrigerator further comprises:

[0018] The circulating fan is arranged in the air-cooled cooling air channel and has a fan outlet directed to the drawer cavity, and is configured to flow the refrigerated air flow in the air-cooled cooling air channel into the drawer cavity when in an activated state.

[0019] Further, the low-temperature refrigeration system comprises:

[0020] The Stirling refrigerator is arranged at the bottom of the box body, the refrigeration part comprises a cold end of the Stirling refrigerator and a heat exchanger connected to the cold end of the Stirling refrigerator, the heat exchanger is arranged in the cooling cavity, and the cooling fan is configured to guide the refrigerated air flow after heat exchange with the heat exchanger to flow into the cold air supply channel and the air-cooled cooling air channel through the air supply passage.

[0021] Further, the cooling cavity is provided with a heterogeneous phase separator arranged between the refrigeration part and the air supply passage, and the heterogeneous phase separator is configured to remove frost in the refrigerated air flow.

[0022] Further, the air inlet of the heterogeneous phase separator is communicated with the air outlet of the refrigeration part, the gas phase outlet of the heterogeneous phase separator is communicated with the air supply passage, and the solid phase outlet of the heterogeneous phase separator is communicated with the bottom of the refrigeration part.

[0023] Further, the refrigeration drawer is movably arranged in the refrigeration compartment in the front-rear direction.

[0024] The low-temperature refrigeration system comprises:

[0025] The refrigeration coil is arranged on the cold guide and has a heat exchange working medium flowing therein, and is configured to provide cold energy to the cold guide.

[0026] 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 cooling components and the wall of the freezer compartment and to accommodate changes in the position of the freezer drawer within the freezer compartment.

[0027] Furthermore, the cryogenic refrigeration system also includes:

[0028] The Stirling refrigeration unit is located at the bottom of the enclosure.

[0029] A heat exchanger, installed on the cold end of a Stirling refrigerator, includes a heat exchange substrate and heat exchange tubes installed on the heat exchange substrate. 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.

[0030] 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,

[0031] 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,

[0032] The drawer cavity has an upward-facing access opening at the top; and,

[0033] The refrigerator also includes:

[0034] 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.

[0035] 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.

[0036] 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,

[0037] The vapor compression refrigeration system also 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.

[0038] The refrigerator of the utility model, because the bottom of the drawer cavity is provided with a cold guide, when food materials are stored in the drawer cavity, the food materials can be directly placed on the cold guide, and then the cold guide can directly exchange the cold quantity on it to the food materials.

[0039] The above and other objects, advantages and features of the present utility model will become more apparent from the following detailed description of some embodiments thereof, when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0040] Some specific embodiments of the present utility model will be described in detail hereinafter with reference to the accompanying drawings in an exemplary and non-limiting manner. The same reference numerals in the drawings denote the same or similar components or parts. It should be understood by those skilled in the art that the drawings are not necessarily drawn to scale. In the drawings:

[0041] Figure 1 is a structural schematic view of a refrigerator according to one embodiment of the present utility model;

[0042] Figure 2 is one of internal structure schematic views of a refrigerator according to one embodiment of the present utility model;

[0043] Figure 3 is a sectional view schematic view of a freezing drawer in a refrigerator according to one embodiment of the present utility model;

[0044] Figure 4 is an exploded view of a refrigerator according to one embodiment of the present utility model;

[0045] Figure 5 is a structural schematic view of a heterogeneous phase separator in a refrigerator according to one embodiment of the present utility model;

[0046] Figure 6 is the second internal structure schematic view of a refrigerator according to one embodiment of the present utility model;

[0047] Figure 7 is an enlarged schematic view of "A" in Figure 6

[0048] Figure 8 is a structural schematic view of a telescopic hose in a refrigerator according to one embodiment of the present utility model;

[0049] Figure 9 ​It is one of connection structure schematic views of the refrigerating coil and the cold guide in the refrigerator according to one embodiment of the utility model;

[0050] Figure 10 It is two of connection structure schematic views of the refrigerating coil and the cold guide in the refrigerator according to one embodiment of the utility model. DETAILED DESCRIPTION

[0051] In the description of the present embodiments, it is to be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and other similar terms are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0052] The terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implying a specific number of the technical features indicated. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include at least one of the features, i.e. one or more of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited. When a certain feature "includes or contains" a certain or certain features, unless otherwise specifically described, it indicates that other features are not excluded and can further include other features.

[0053] Unless otherwise specifically defined and limited, the terms "mounting", "setting", "connection" and other terms should be broadly understood, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. Those skilled in the art should be able to understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0054] In addition, in the description of the present embodiments, the first feature "above" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. That is, in the description of the present embodiments, the first feature "above", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" or "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0055] Unless otherwise defined, all terms (including technical and scientific terms) used in the description of the present embodiments have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0056] In the description of the present embodiments, the description referring to the terms "embodiment", "embodiment mode" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in an appropriate manner.

[0057] The refrigerator of the present embodiments will be described in detail below with reference to Figures 1 to 10 , among which, Figure 2 , and Figure 6 The hollow arrows in

[0058] With reference to Figure 1 , Figure 2 , and Figure 3 , in the present embodiments, the refrigerator comprises a cabinet 100, a freezing drawer 200 and a low-temperature refrigeration system 300.

[0059] The freezing compartment 110 is arranged in the cabinet 100.

[0060] The freezing drawer 200 is arranged in the freezing compartment 110, and the freezing drawer 200 comprises a drawer cavity 210 and a cold guide 220 arranged at the bottom of the drawer cavity 210.

[0061] The low-temperature refrigeration system 300 is arranged in the cabinet 100, and the low-temperature refrigeration system 300 is configured to provide cold energy to the cold guide 220 to make the temperature on the cold guide 220 less than or equal to minus 30 degrees Celsius.

[0062] The refrigerator of the present embodiments, since the bottom of the drawer cavity 210 is provided with the cold guide 220, when food is stored in the drawer cavity 210, the food can be directly placed on the cold guide 220, and then the cold guide 220 can directly exchange the cold energy thereon to the food. Moreover, the cold energy on the cold guide 220 is provided by the low-temperature refrigeration system 300 of the refrigerator, and the low-temperature refrigeration system 300 can make the temperature on the cold guide 220 less than or equal to minus 30 degrees Celsius. All the above can make the food in the drawer cavity 210 freeze quickly. Therefore, the refrigerator of the present embodiments can quickly freeze the food, meet the use demand of the user that the food needs to be quickly frozen, and improve the use experience of the user.

[0063] With reference toFigure 2 and Figure 3 In the first embodiment of the low-temperature refrigeration system 300, the bottom of the freezing drawer 200 is provided with a cold-guiding and cold-supply air duct 230, which is located below the drawer cavity 210, and the cold-guiding member 220 is located between the drawer cavity 210 and the cold-guiding and cold-supply air duct 230.

[0064] The bottom of the cabinet 100 is provided with a cold-supply cavity 120, and the rear of the freezing compartment 110 is provided with an air supply passage 130, which is communicated between the cold-supply cavity 120 and the cold-guiding and cold-supply air duct 230.

[0065] The low-temperature refrigeration system 300 includes a refrigeration part 310 and a cold-supply fan 320. At least part of the refrigeration part 310 is arranged in the cold-supply cavity 120, and the refrigeration part 310 is used to provide cold energy. The cold-supply fan 320 is arranged in the cold-supply cavity 120, and the cold-supply fan 320 is used to guide the freezing airflow after heat exchange with the refrigeration part 310 to flow into the cold-guiding and cold-supply air duct 230 through the air supply passage 130, and the cold-guiding member 220 is used to exchange heat with the freezing airflow in the cold-guiding and cold-supply air duct 230 to cool the food placed thereon.

[0066] It can be understood that the low-temperature refrigeration system 300 can provide cold energy of the refrigeration part 310 to the cold-guiding member 220 in the form of airflow, and this can be achieved by the construction of the cold-guiding and cold-supply air duct 230 and the cold-supply cavity 120, and the cooperation of the cold-supply fan 320.

[0067] Referring to Figure 2 and Figure 3 In this embodiment, the top of the freezing drawer 200 and the top wall of the freezing compartment 110 are provided with an air-cooled cold-supply air duct 140, which is communicated with the air supply passage 130.

[0068] The top of the drawer cavity 210 has a taking opening 211 opened upward, and the cold-supply fan 320 is used to guide the freezing airflow after heat exchange with the refrigeration part 310 to flow into the air-cooled cold-supply air duct 140 through the air supply passage 130.

[0069] The refrigerator further includes a circulating fan 700. The circulating fan 700 is arranged in the air-cooled cold-supply air duct 140, and the fan outlet of the circulating fan 700 faces the drawer cavity 210, and the circulating fan 700 is used to flow the freezing airflow in the air-cooled cold-supply air duct 140 into the drawer cavity 210 in the state of being started.

[0070] It can be understood that through the arrangement of the circulating fan 700 and the construction of the air-cooled cooling air duct 140, the frozen air flow provided by the low-temperature refrigeration system 300 can be guided into the drawer cavity 210, so as to further improve the freezing speed of the food in the drawer cavity 210, further ensure the quick-freezing effect of the refrigerator on the food, and ensure the user's experience.

[0071] With reference to Figure 4 In addition, the refrigerator can include an air duct plate 500 arranged at the rear of the freezing chamber 110, and the air supply channel 130 can be located between the air duct plate 500 and the rear wall of the freezing chamber 110. The air duct plate 500 is provided with a cold air outlet 510 corresponding to the cold air supply and cooling air duct 230, so as to realize the communication between the air supply channel 130 and the cold air supply and cooling air duct 230; and the air duct plate 500 is provided with an air-cooled air outlet 520 corresponding to the air-cooled cooling air duct 140, so as to realize the communication between the air supply channel 130 and the air-cooled cooling air duct 140.

[0072] And with reference to Figure 4 The drawer top cover 240 is further provided at the taking opening 211, and the circulating fan 700 is arranged at the circulating air outlet 241 of the drawer top cover 240. Further, when the circulating fan 700 is in a stopped state, the drawer top cover 240 can prevent the frozen air flow in the air-cooled cooling air duct 140 from flowing into the drawer cavity 210, so as to avoid the direct blowing of the frozen air flow to the food in the drawer cavity 210, avoid the loss of moisture of the food, and in combination with the quick-freezing effect of the cold guide 220 on the food, the refrigerator of the embodiment can realize the quick-freezing of the food while effectively ensuring the freezing quality of the food.

[0073] In some alternative embodiments, the refrigerator can include a common refrigeration cycle system, and a cooling cavity 120 and an air supply channel 130 are separately arranged in the cabinet 100. So that the common refrigeration cycle system separately provides the frozen air flow for the air-cooled cooling air duct 140, and the frozen air flow provided by the common refrigeration cycle system is delivered into the drawer cavity 210, which can also improve the freezing speed of the food in the drawer cavity 210, further ensure the quick-freezing effect of the refrigerator on the food, and ensure the user's experience.

[0074] With reference to Figure 2 In the embodiment, the low-temperature refrigeration system 300 includes a Stirling refrigerator 330.

[0075] The Stirling refrigerator 330 is arranged at the bottom of the cabinet 100, the refrigeration part 310 includes a 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 arranged in the cooling cavity 120, and the cooling fan 320 is used to guide the refrigerated air flow after heat exchange with the heat exchanger 312 to flow into the cold air supply channel 230 and the air-cooled cooling air duct 140 through the air supply channel 130.

[0076] It can be understood that the low-temperature refrigeration system 300 can be a refrigeration system composed of the Stirling refrigerator 330. Moreover, the temperature of the cold end 311 of the Stirling refrigerator 330 can reach minus 200℃, thereby the temperature of the cold guide 220 can be lower than minus 30℃, and the refrigerated air flow is delivered into the air-cooled cooling air duct 140, so as to ensure that the refrigerator can quickly freeze food.

[0077] Moreover, through the arrangement of the heat exchanger 312, the heat exchange efficiency and heat exchange amount between the cold end 311 of the Stirling refrigerator 330 and the air flow after heat exchange with the cold end 311 can be ensured, so as to further ensure the quick freezing effect of the refrigerator on food.

[0078] In some alternative embodiments, the low-temperature refrigeration system 300 can be a refrigeration cycle system including a compressor, a condenser, a throttling device and an evaporator 420. The compressor, the condenser, the throttling device and the evaporator 420 are sequentially connected. Moreover, a low-temperature refrigerant can be used to achieve the temperature of the cold guide 220 lower than minus 30℃. For example, R23, R508B, R404A and the like. At this time, the refrigeration part 310 can include the evaporator 420. The evaporator 420 is arranged in the cooling cavity 120, and the cooling fan 320 is used to guide the refrigerated air flow after heat exchange with the evaporator 420 to flow into the cold air supply channel 230 and the air-cooled cooling air duct 140 through the air supply channel 130, so as to ensure that the refrigerator can quickly freeze food.

[0079] In some alternative embodiments, the low-temperature refrigeration system 300 can be a refrigeration cycle system including a compressor, a condenser, a throttling device and an evaporator 420. The compressor, the condenser, the throttling device and the evaporator 420 are sequentially connected. Moreover, a low-temperature refrigerant can be used to achieve the temperature of the cold guide 220 lower than minus 30℃. For example, R23, R508B, R404A and the like. At this time, the refrigeration part 310 can include the evaporator 420. The evaporator 420 is arranged in the cooling cavity 120, and the cooling fan 320 is used to guide the refrigerated air flow after heat exchange with the evaporator 420 to flow into the cold air supply channel 230 and the air-cooled cooling air duct 140 through the air supply channel 130, so as to ensure that the refrigerator can quickly freeze food.

[0080] Referring to Figure 2 and Figure 5 In the embodiment, a heterogeneous separator 600 is arranged in the cooling cavity 120, and the heterogeneous separator 600 is arranged between the refrigeration part 310 (located in the part of the cooling cavity 120, i.e., the aforementioned heat exchanger 312 / evaporator 420) and the air supply channel 130, and the heterogeneous separator 600 is used to remove frost in the freezing air flow.

[0081] It can be understood that, due to the low temperature of the refrigeration part 310 of the low-temperature refrigeration system 300, frost will be deposited on the refrigeration part 310. Then, after the air flow passes through the refrigeration part 310 for heat exchange, the frost will be carried into the freezing chamber. Then, the heterogeneous separator 600 can be arranged to remove the frost in the freezing air flow, so as to avoid the frost from being blown into the freezing chamber and ensure the user experience.

[0082] In the embodiment, the air inlet 610 of the heterogeneous separator 600 is communicated with the air outlet of the refrigeration part 310, the gas phase outlet 620 of the heterogeneous separator 600 is communicated with the air supply channel 130, and the solid phase outlet 630 of the heterogeneous separator 600 is communicated with the bottom of the refrigeration part 310.

[0083] It can be understood that, by communicating / extending the solid phase outlet 630 of the heterogeneous separator 600 to the bottom of the refrigeration part 310, the frost removed by the heterogeneous separator 600 can be transported to the bottom of the refrigeration part 310 (in the water pan), and when the refrigeration part 310 is heated to defrost, the frost at the bottom of the refrigeration part 310 will melt and be discharged to the outside of the cabinet 100 or be discharged into the evaporator pan of the refrigerator.

[0084] In addition, in the prior art, some refrigerators are provided with a cold guide plate in the freezing chamber 110, and the refrigerator is provided with a low-temperature refrigeration system 300 including a Stirling refrigerator 330 and a refrigerant circulation pipe. The Stirling refrigerator 330 is arranged in the cabinet 100. The refrigerant circulation pipe is connected to the cold end 311 of the Stirling refrigerant and is arranged on the cold guide plate through the wall of the freezing chamber 110, so as to exchange the cold energy of the cold end 311 of the Stirling refrigerator 330 to the cold guide plate through the refrigerant circulation pipe, and quickly freeze the food placed on the cold guide plate. However, the freezing drawer 200 is arranged in the freezing chamber 110, and the cold guide plate is arranged in the drawer cavity 210 of the freezing drawer 200. Since the refrigerant circulation pipe is a metal pipe, the refrigerant circulation pipe cannot adapt to the change of the position of the freezing drawer 200 in the freezing chamber 110, so that the low-temperature refrigeration system 300 cannot provide cold energy to the cold guide plate through the refrigerant circulation pipe, and the refrigerator cannot quickly freeze the food stored in the drawer cavity 210, which reduces the user experience.

[0085] Referring to Figure 6 In the second embodiment of the low-temperature refrigeration system 300 of the present embodiment, the freezing drawer 200 is movably arranged in the freezing compartment 110 in the front-rear direction; and the low-temperature refrigeration system 300 comprises a refrigeration coil 340 and an elastic hose 350.

[0086] The refrigeration coil 340 is arranged on the cold guide 220, and a heat exchange medium flows in the refrigeration coil 340, which is used to provide cold energy to the cold guide 220.

[0087] The first end of the elastic hose 350 is communicated with the refrigeration coil 340, and the second end of the elastic hose 350 is arranged through the wall of the freezing compartment 110, and the elastic hose 350 is used to transport the heat exchange medium between the cold guide 220 and the wall of the freezing compartment 110 and adapt to the position change of the freezing drawer 200 in the freezing compartment 110.

[0088] Since the refrigerator of the present embodiment is provided with the refrigeration coil 340 on the cold guide 220, and the elastic hose 350 is arranged between the refrigeration coil 340 and the wall of the freezing compartment 110, the elastic hose 350 can adapt to the position change of the freezing drawer 200 in the freezing compartment 110, and then the low-temperature refrigeration system 300 can provide the heat exchange medium in it to the refrigeration coil 340 from the wall of the freezing compartment 110 through the elastic hose 350, so that the low-temperature refrigeration system 300 can provide cold energy to the cold guide 220 through the elastic hose 350 and the refrigeration coil 340. Therefore, the refrigerator of the present embodiment can quickly freeze the food stored in the drawer cavity 210, ensuring the user's experience.

[0089] Of course, it should be noted that the above-mentioned first embodiment of the low-temperature refrigeration system 300, i.e., the low-temperature refrigeration system 300 provides cold energy of the refrigeration part 310 to the cold guide 220 in the form of air flow, without considering the position change of the freezing drawer 200 in the freezing compartment 110,

[0090] Referring to Figure 6 and Figure 8 In the present embodiment, the elastic hose 350 is arranged in a curved and coiled manner in any direction to facilitate the whole elastic hose 350 to occupy as little space as possible in the freezing compartment 110 in other directions except the direction, to ensure the storage space of the drawer cavity 210 and the user's experience.

[0091] Referring to Figure 8 In the present embodiment, the elastic hose 350 is arranged in a curved and coiled manner in a disc shape, and one end of the elastic hose 350 is coiled at the middle part, and the other end of the elastic hose 350 is coiled at the edge.

[0092] It can be understood that the whole of the flexible hose 350 can be arranged between the rear side wall of the freezing chamber 110 and the freezing drawer 200 in parallel to the rear side wall of the freezing chamber 110 to ensure the space of the freezing chamber 110 in the front-rear direction; or the whole of the flexible hose 350 can be arranged between the left / right side wall of the freezing chamber 110 and the freezing drawer 200 in parallel to the left / right side wall of the freezing chamber 110 to ensure the space of the freezing chamber 110 in the left-right direction, ensure the storage space of the drawer cavity 210, and ensure the use experience of the user.

[0093] With reference to Figure 6 In the embodiment, the flexible hose 350 is arranged in a spiral shape and curved in the front-rear direction, and the flexible hose 350 is located below the freezing drawer 200.

[0094] It can be understood that the whole of the flexible hose 350 can also be arranged in a spiral shape and curved in the front-rear direction, and the flexible hose 350 can be located below the freezing drawer 200 to ensure the space of the freezing chamber 110 in the up-down direction, ensure the storage space of the drawer cavity 210, and ensure the use experience of the user.

[0095] In the embodiment, the flexible hose is arranged in an S shape and curved (for example, as shown in Figure 9 the freezing coil is arranged in an S shape and curved), to ensure the storage space of the drawer cavity 210, and ensure the use experience of the user. Specifically, the flexible hose can be arranged on the rear wall / left side wall / right side wall / bottom surface of the freezing chamber.

[0096] With reference to Figure 9 and Figure 10 In the embodiment, the refrigeration coil 340 is arranged on the cold guide 220. To ensure that the refrigeration coil 340 exchanges cold energy to the cold guide 220, ensure the quick-freezing effect of the refrigerator, and ensure the use experience of the user.

[0097] Specifically, the refrigeration coil 340 can be arranged on the cold guide 220 in a plurality of annular shapes, or can be arranged on the cold guide 220 in an S shape.

[0098] With reference to Figure 6 In the embodiment, the refrigeration coil 340 can be arranged on the lower side of the cold guide 220 or penetrate into the cold guide 220.

[0099] With reference to Figure 6 and Figure 7 In the embodiment, the low-temperature refrigeration system 300 further includes a Stirling refrigerator 330 and a heat exchanger 360.

[0100] The Stirling refrigerator 330 is arranged at the bottom of the box body 100.

[0101] The heat exchanger 360 is arranged on the cold end 311 of the Stirling refrigerator 330, and the heat exchanger 360 comprises a heat exchange base 361 and a heat exchange pipe 362 arranged on the heat exchange base 361. The second end of the flexible hose 350 is communicated with the heat exchange pipe 362, so as to promote the heat exchange of the cold end 311 of the Stirling refrigerator 330 to the cold guide 220.

[0102] It can be understood that the low-temperature refrigeration system 300 can be a refrigeration system composed of the Stirling refrigerator 330. Moreover, the temperature of the cold end 311 of the Stirling refrigerator 330 can reach minus 200℃, so as to promote the temperature of the cold guide 220 to be lower than minus 30℃, and the frozen air flow is delivered into the air-cooled refrigeration air duct 140, so as to ensure that the refrigerator can quickly freeze food.

[0103] Moreover, through the arrangement of the heat exchanger 360, the heat exchange efficiency and the heat exchange amount between the cold end 311 of the Stirling refrigerator 330 and the heat exchange working medium can be ensured, so as to further ensure the quick freezing effect of the refrigerator on food.

[0104] Referring to Figure 6 and Figure 7 In the embodiment, the foaming layer 150 is arranged between the cabinet 100 and the freezing chamber 110.

[0105] Referring to Figure 6 and Figure 7 In the embodiment, the cold end 311 of the Stirling refrigerator 330 and the heat exchanger 360 are arranged in the foaming layer 150, so as to limit the leakage of cold energy at the cold end 311 of the Stirling refrigerator 330 and the heat exchanger 360, and further ensure the quick freezing effect of the refrigerator on food.

[0106] Referring to Figure 6 and Figure 7 In the embodiment, the low-temperature refrigeration system 300 further comprises a connecting pipe 370 connected between the second end of the flexible hose 350 and the heat exchange pipe 362. The connecting pipe 370 is arranged in the up-down direction, and the connecting pipe 370 is arranged in the foaming layer 150, so as to realize the delivery of the heat exchange working medium between the heat exchange pipe 362 and the flexible hose 350, and limit the loss of the cold energy of the cold end 311 of the Stirling refrigerator 330 during the transportation to the cold guide 220, and further ensure the quick freezing effect of the refrigerator on food.

[0107] In some alternative embodiments, the low-temperature refrigeration system 300 can be a refrigeration cycle system further comprising a compressor, a condenser, a throttling device, the compressor, the condenser, the throttling device and the refrigeration coil 340 being connected in sequence, and the outlet and the inlet of the refrigeration coil 340 being connected to the refrigeration cycle system in a compression evaporation mode through the flexible hoses 350. And a low-temperature refrigerant can be used to achieve the temperature of the cold guide 220 below minus 30°C. For example, R23, R508B, R404A and the like.

[0108] In some alternative embodiments, the low-temperature refrigeration system 300 can be a refrigeration cycle system further comprising a compressor, a condenser, a throttling device, the compressor, the condenser, the throttling device and the refrigeration coil 340 being connected in sequence, and the outlet and the inlet of the refrigeration coil 340 being connected to the refrigeration cycle system in a compression evaporation mode through the flexible hoses 350. And a low-temperature refrigerant can be used to achieve the temperature of the cold guide 220 below minus 30°C. For example, R23, R508B, R404A and the like.

[0109] Referring to Figure 6 In the present embodiment, the bottom of the cabinet 100 is provided with the cooling cavity 120, and the rear of the freezing chamber 110 is provided with the air supply passage 130.

[0110] The top of the freezing drawer 200 and the top wall of the freezing chamber 110 are provided with the air-cooled cooling air duct 140, which is communicated with the air supply passage 130.

[0111] The top of the drawer cavity 210 is provided with the upwardly open access opening 211. The refrigerator further comprises a vapor compression refrigeration system 400.

[0112] The vapor compression refrigeration system 400 comprises a cooling fan 410 and a compressor, a condenser, a throttling device and an evaporator 420 connected in sequence, the cooling fan 410 and the evaporator 420 being arranged in the cooling cavity 120, and the cooling fan 410 being used to guide the refrigeration airflow after heat exchange with the evaporator 420 to flow into the air-cooled cooling air duct 140 through the air supply passage 130.

[0113] The circulating fan 700 is arranged in the air-cooled cooling air duct 140, and the fan outlet of the circulating fan 700 faces the drawer cavity 210, and the circulating fan 700 is used to flow the refrigeration airflow in the air-cooled cooling air duct 140 into the drawer cavity 210 in the state of being started.

[0114] It can be understood that through the arrangement of the circulating fan 700 and the construction of the air-cooled cooling air duct 140, the cooling cavity 120 and the air supply channel 130, the refrigeration air flow provided by the vapor compression refrigeration system 400 can be guided into the drawer cavity 210, so as to further improve the freezing speed of the food in the drawer cavity 210, further ensure the quick-freezing effect of the refrigerator on the food, and ensure the user's experience.

[0115] Of course, the refrigerant circulating in the vapor compression refrigeration system 400 in the embodiment can be the refrigerant commonly used in household refrigerators, such as R600A and R134a; or the low-temperature refrigerant R23, R508B, and R404A.

[0116] With reference to Figure 4 In addition, the refrigerator can include an air duct plate 500 arranged at the rear of the freezing chamber 110, and the air supply channel 130 can be located between the air duct plate 500 and the rear wall of the freezing chamber 110. An air-cooled air outlet 520 is arranged at a position of the air duct plate 500 corresponding to the air-cooled cooling air duct 140, so as to realize the communication between the air supply channel 130 and the air-cooled cooling air duct 140.

[0117] With reference to Figure 4 In addition, the refrigerator can include an air duct plate 500 arranged at the rear of the freezing chamber 110, and the air supply channel 130 can be located between the air duct plate 500 and the rear wall of the freezing chamber 110. An air-cooled air outlet 520 is arranged at a position of the air duct plate 500 corresponding to the air-cooled cooling air duct 140, so as to realize the communication between the air supply channel 130 and the air-cooled cooling air duct 140.

[0118] 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 through air flow. In combination with the low-temperature refrigeration system 300 in the embodiment which provides cold energy to the cold guide 220 through the flexible hose 350, the food freezing speed in the drawer cavity 210 can be further improved, the quick-freezing effect of the refrigerator on the food can be ensured, and the user's experience can be ensured.

[0119] With reference to Figure 7In the embodiment, the cold end 311 of the Stirling refrigerator 330, the hot end 331 of the Stirling refrigerator 330 and the heat exchanger 360 are arranged in the foaming layer 150. The vapor compression refrigeration system 400 comprises an evaporating coil 430 connected in parallel with the evaporator 420, and the evaporating 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.

[0120] It can be understood that, due to the limitation of the structure of the Stirling refrigerator 330, the distance between the cold end 311 and the hot end 331 of the Stirling refrigerator 330 is about 50mm, and in order to minimize the leakage of cold energy from the cold end 311 of the Stirling refrigerator 330, the hot end 331 of the Stirling refrigerator 330 can be arranged together with the cold end in the foaming layer 150. Of course, it can also be understood that the height of the foaming layer 150 in the direction from the cold end 311 to the hot end 331 of the Stirling refrigerator 330 is increased. Therefore, the embodiment can further limit the leakage of cold energy from the cold end 311 of the Stirling refrigerator 330 and the heat exchanger 360, and further ensure the quick freezing effect of the refrigerator on food.

[0121] Moreover, since the hot end 331 of the Stirling refrigerator is surrounded by the foaming layer 150, the hot end 331 of the Stirling refrigerator cannot dissipate heat to the surrounding environment, and 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 the quick freezing effect of the refrigerator on food.

[0122] Referring to Figure 1 and Figure 4 In the embodiment, the front side of the cabinet 100 is provided with an access opening 111 communicating with the freezing compartment 110, and the refrigerator further comprises a drawer door 800 arranged at the access opening 111 and connected to the freezing drawer 200.

[0123] At this point, those skilled in the art should recognize that, although the present application has been shown and described in detail in this paper, many other variants or modifications conforming to the principles of the present application can be directly determined or deduced from the content disclosed in the present application without departing from the spirit and scope of the present application. Therefore, the scope of the present application should be understood and recognized as covering all these other variants or modifications.

Claims

1. A refrigerator characterized by comprising: Comprise: a cabinet, in which a freezing compartment is arranged; a freezing drawer arranged in the freezing compartment, in which a drawer cavity is arranged, which comprises a cold guide arranged at the bottom of the drawer cavity; a low-temperature refrigeration system arranged in the cabinet, which is used to provide cold energy to the cold guide to make the temperature on the cold guide less than or equal to minus 30 degrees Celsius.

2. The refrigerator according to claim 1, wherein a cold supply air duct is arranged at the bottom of the freezing drawer, the cold supply air duct is arranged below the drawer cavity, and the cold guide is arranged between the drawer cavity and the cold supply air duct; and a cold supply cavity is arranged at the bottom of the cabinet, a supply air passage is arranged at the rear of the freezing compartment, and the supply air passage is communicated between the cold supply cavity and the cold supply air duct; and the low-temperature refrigeration system comprises: a refrigeration part, which is at least partially arranged in the cold supply cavity, and is used to provide cold energy; a cold air fan, which is arranged in the cold supply cavity, and is used to guide the refrigeration airflow after heat exchange with the refrigeration part to flow into the cold supply air duct through the supply air passage, and the cold guide is used to exchange heat with the refrigeration airflow in the cold supply air duct to cool the food placed thereon.

3. The refrigerator according to claim 2, wherein a wind cooling cold supply air duct is arranged between the top of the freezing drawer and the top wall of the freezing compartment, and the wind cooling cold supply air duct is communicated with the supply air passage; and the top of the drawer cavity has a taking opening opened upwardly, and the cold air fan is used to guide the refrigeration airflow after heat exchange with the refrigeration part to flow into the wind cooling cold supply air duct through the supply air passage; and the refrigerator further comprises: a circulating fan, which is arranged in the wind cooling cold supply air duct, and the fan outlet of the circulating fan is directed to the drawer cavity, and is used to make the refrigeration airflow in the wind cooling cold supply air duct flow into the drawer cavity in the state of being started.

4. The refrigerator according to claim 3, wherein the low-temperature refrigeration system comprises: a Stirling refrigerator, which is arranged at the bottom of the cabinet, the refrigeration part comprises a cold end of the Stirling refrigerator and a heat exchanger connected to the cold end of the Stirling refrigerator, the heat exchanger is arranged in the cold supply cavity, and the cold air fan is used to guide the refrigeration airflow after heat exchange with the heat exchanger to flow into the cold supply air duct and the wind cooling cold supply air duct through the supply air passage.

5. The refrigerator according to claim 2, wherein a heterogeneous separator is arranged in the cold supply cavity, the heterogeneous separator is arranged between the refrigeration part and the supply air passage, and the heterogeneous separator is used to remove frost in the refrigeration airflow.

6. The refrigerator according to claim 5, wherein the air inlet of the heterogeneous separator is communicated with the air outlet of the refrigeration part, the gas phase outlet of the heterogeneous separator is communicated with the supply air passage, and the solid phase outlet of the heterogeneous separator is communicated with the bottom of the refrigeration part.

7. The refrigerator according to claim 1, wherein the freezing drawer is movably arranged in the freezing compartment in the front-rear direction; and The low-temperature refrigeration system comprises: a refrigeration coil arranged on the cold guide, in which a heat exchange working medium flows, for providing cold to the cold guide; a flexible hose having a first end connected to the refrigeration coil and a second end penetrating through a wall of the freezing compartment, for transporting the heat exchange working medium between the cold guide and the wall of the freezing compartment and adapting to the position change of the freezing drawer in the freezing compartment.

8. The refrigerator according to claim 7, wherein the low-temperature refrigeration system further comprises: a Stirling refrigerator arranged at the bottom of the cabinet; a heat exchanger arranged at the cold end of the Stirling refrigerator, comprising a heat exchange base and a heat exchange pipe arranged on the heat exchange base, and the second end of the flexible hose is connected to the heat exchange pipe, so as to cause the cold at the cold end of the Stirling refrigerator to be exchanged to the cold guide.

9. The refrigerator according to claim 8, wherein the bottom of the cabinet is provided with a cooling cavity, and the rear part of the freezing compartment is provided with an air supply channel; and an air-cooled cooling air duct is arranged between the top of the freezing drawer and the top wall of the freezing compartment, and the air-cooled cooling air duct is connected to the air supply channel; and the top of the drawer cavity is provided with a taking opening upwardly opened; and the refrigerator further comprises: a vapor compression refrigeration system comprising a cooling fan and a compressor, a condenser, a throttling device and an evaporator connected in sequence, the cooling fan and the evaporator are arranged in the cooling cavity, and the cooling fan is used to guide the refrigeration airflow after heat exchange with the evaporator to flow into the air-cooled cooling air duct through the air supply channel; a circulating fan is arranged in the air-cooled cooling air duct, and the fan outlet of the circulating fan faces the drawer cavity, for causing the refrigeration airflow in the air-cooled cooling air duct to flow into the drawer cavity when the circulating fan is started.

10. The refrigerator according to claim 9, wherein a foaming layer is arranged between the cabinet and the freezing compartment, and the cold end of the Stirling refrigerator, the hot end of the Stirling refrigerator and the heat exchanger are arranged in the foaming layer; and the vapor compression refrigeration system further comprises an evaporating coil connected in parallel to the evaporator, and the evaporating 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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