Refrigerator

Abstract

The utility model belongs to the technical field of household appliances, and particularly relates to a refrigerator which comprises a refrigerator body, a storage chamber, a refrigerator door, a drawer unit, an air exhaust device, a gas separation shell and a gas filtering unit, the gas separation shell is provided with a first gas inlet and at least one first gas outlet, and the first gas inlet communicates with a closed space; the interior of the gas separation shell is communicated with a gas extractor through a first gas outlet; the gas filtering unit is arranged in the gas separation shell and is provided with a second gas inlet and a second gas outlet, the second gas inlet is correspondingly communicated with the first gas inlet, and the second gas outlet is communicated with the first gas outlet; when the air extractor operates, part of gas in the closed space enters the gas filtering unit through the first gas inlet and the second gas inlet, the gas selectively penetrating through the gas filtering unit is discharged through the second gas outlet, and the gas discharged from the second gas outlet is extracted from the first gas outlet under the action of the air extractor. According to the invention, the oxygen reduction amount is increased, and the fresh-keeping effect of the drawer unit is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of household appliances, and specifically relates to a refrigerator. Background Art

[0002] With the continuous improvement of living standards and dietary structure, people have higher and higher requirements for the freshness and durability of food. Refrigerators are the terminal for consumers to store food, and people's demand for refrigerators' freshness-preserving functions is increasing.

[0003] Currently, fresh-keeping technologies generally meet people's needs. These technologies typically utilize vacuum equipment to adjust the oxygen concentration or vacuum level within a drawer. By reducing the oxygen concentration or increasing the vacuum level within the drawer, these technologies inhibit aerobic respiration of fruits and vegetables, reduce moisture loss in ingredients, and slow down oxidative spoilage.

[0004] However, existing vacuum equipment has unsatisfactory oxygen reduction effects, leading to food spoilage. Utility Model Content

[0005] The purpose of this application is to solve the problem in the prior art that vacuum equipment has a poor oxygen reduction effect on drawers.

[0006] The present application provides a refrigerator, comprising: a box body; a storage chamber formed in the box body; a box door for opening and closing the storage chamber; a drawer unit, at least one of the drawer units being arranged in the storage chamber, the drawer unit comprising: a drawer body having a storage opening; a storage drawer capable of sliding relative to the drawer body, the storage drawer being capable of closing the storage opening of the drawer body to form a closed space with the drawer body; an air extraction device being arranged in the box body; the refrigerator further comprising: a gas separation shell, the gas separation shell being an internal hollow structure, the gas separation shell being provided with a first air inlet and at least one first air outlet, the first air inlet being connected to the closed space, the gas The interior of the gas separation shell is connected to the gas extraction device through the first air outlet; the gas filter unit is arranged inside the gas separation shell, and the gas filter unit is provided with a second air inlet and a second air outlet, the second air inlet is connected to the first air inlet correspondingly, and the second air outlet is connected to the first air outlet; wherein, when the gas extraction device is running, part of the gas in the enclosed space can enter the gas filter unit through the first air inlet and the second air inlet, and the gas selectively permeated through the gas filter unit is discharged through the second air outlet, and under the action of the gas extraction device, the gas discharged from the second air outlet is extracted from the first air outlet.

[0007] Another technical solution among the above technical solutions has the following advantages or beneficial effects:

[0008] The exhaust device allows the gas in the enclosed space to enter the gas filter unit through the first air inlet and the second air inlet of the gas separation shell. The gas filter unit can selectively pass the gas. The gas selectively passed through the gas filter unit enters the gas separation shell through the second air outlet. Under the action of the exhaust device, the gas enriched in the gas separation shell is extracted from the first air outlet. The exhaust device and the gas filter unit can effectively reduce the gas content in the enclosed space and improve the freshness preservation effect of the drawer unit.

[0009] In an exemplary embodiment of the present application, the gas filter unit includes: a filter unit body, on which the second air inlet and the second air outlet are provided; a filter element, including a fiber bundle, and a plurality of the fiber bundles are integrated and arranged in the filter unit body.

[0010] Another technical solution among the above technical solutions has the following advantages or beneficial effects:

[0011] A filter element is installed within the filter unit body, comprising multiple fiber bundles. A vacuum device creates a negative pressure inside the gas separation housing, reducing the pressure outside the filter unit body. Under this pressure, gas entering the gas filter unit permeates the fiber bundles at varying rates, selectively passing through the second outlet on the filter unit body. The selectively permeated gas accumulates within the gas separation housing. The multiple fiber bundles selectively filter gas entering the first and second inlets, effectively reducing the amount of gas in the confined space.

[0012] In an exemplary embodiment of the present application, the separation assembly is provided on the inner top wall of the drawer body.

[0013] Another technical solution among the above technical solutions has the following advantages or beneficial effects:

[0014] Since the water vapor in the drawer unit has a low density, it is easy to condense on the top of the drawer unit. Therefore, when the separation component is arranged at the inner top of the drawer body, the water vapor in the drawer unit can also be separated, and the water vapor is enriched inside the gas separation shell. The water vapor is then extracted from the first air outlet through the exhaust device, thereby reducing the humidity in the drawer unit and improving the dehumidification effect of the drawer unit.

[0015] In an exemplary embodiment of the present application, a card slot is provided on the outer wall of the gas separation shell; a clip that cooperates with the card slot is provided on the inner top wall of the drawer body; wherein the gas separation shell is clipped to the inner wall of the drawer body through the card slot and the clip.

[0016] Another technical solution among the above technical solutions has the following advantages or beneficial effects:

[0017] The gas separation shell and the drawer body are connected by the card groove on the outer wall of the gas separation shell and the card buckle on the top wall of the drawer body, so that the separation component can be quickly installed and fixed on the drawer body, improving the convenience of use.

[0018] In an exemplary embodiment of the present application, the gas separation shell is a flat structure, and a top wall and / or a bottom wall of the gas separation shell is provided with a plurality of the first air inlets, and the plurality of the first air inlets are arranged at intervals.

[0019] Another technical solution among the above technical solutions has the following advantages or beneficial effects:

[0020] The flat structure of the gas separation housing reduces the space it occupies within the drawer unit, increasing the space available for food storage. Furthermore, multiple first air inlets are provided on the top and / or bottom walls of the gas separation housing, increasing the rate of gas extraction from the enclosed space and ensuring rapid gas extraction.

[0021] In an exemplary embodiment of the present application, the gas separation shell includes the top wall, the bottom wall, and a first side wall, a second side wall, a third side wall, and a fourth side wall arranged between the top wall and the bottom wall, wherein the first side wall, the second side wall, the third side wall, and the fourth side wall are arranged around the top wall and the bottom wall;

[0022] At least one of the first side wall, the second side wall, the third side wall and the fourth side wall is provided with at least one first air outlet.

[0023] Another technical solution among the above technical solutions has the following advantages or beneficial effects:

[0024] By arranging at least one first air outlet on at least one side wall of the gas separation shell, the gas extraction rate inside the gas separation shell can be increased, and the air pressure inside the gas separation shell can be reduced as quickly as possible, so that the gas in the enclosed space can quickly pass through the first air inlet and enter the gas filter unit, thereby increasing the gas extraction rate.

[0025] In an exemplary embodiment of the present application, one of the first side wall, the second side wall, the third side wall and the fourth side wall is provided with three first air outlets, and adjacent first air outlets are spaced apart from each other.

[0026] Another technical solution among the above technical solutions has the following advantages or beneficial effects:

[0027] By setting three first air outlets on one side wall, the extraction rate of the gas inside the gas separation shell can be guaranteed, while also avoiding setting too many exhaust pipes, which affects the space utilization inside the drawer body, and optimizes the space.

[0028] In an exemplary embodiment of the present application, three first air outlets are evenly spaced and arranged on the first side wall, and the three first air outlets are located at the same height, and the distance between adjacent first air outlets is one quarter of the length of the first side wall.

[0029] Another technical solution among the above technical solutions has the following advantages or beneficial effects:

[0030] By providing three extraction ports on the first sidewall of the gas separation shell, the extraction rate can be increased. Furthermore, the spacing between adjacent first gas outlets is equal to one-quarter the length of the first sidewall. This ensures that the three first gas outlets uniformly extract gas from the gas separation shell, avoiding localized uneven gas concentrations within the shell and varying inlet pressures at multiple first gas inlets, ensuring a consistent extraction rate across all first gas inlets.

[0031] In an exemplary embodiment of the present application, an exhaust joint is provided on the outside of the drawer body, and the exhaust joint is connected to the enclosed space. The exhaust joint is provided with a first exhaust interface located on the outside of the drawer body and a second exhaust interface located on the inside of the drawer body; the exhaust device includes: an exhaust piece; a first exhaust pipe, the first end of the first exhaust pipe is connected to the exhaust piece, and the second end of the first exhaust pipe is connected to the first exhaust interface; a second exhaust pipe, the first end of the second exhaust pipe is connected to the second exhaust interface, and the second end is connected to the first air outlet.

[0032] Another technical solution among the above technical solutions has the following advantages or beneficial effects:

[0033] By providing an exhaust joint on the drawer body, it can be ensured that the gas in the enclosed space flows out through the exhaust joint, and it can be avoided that the exhaust pipe is directly inserted into the drawer body to affect the overall air tightness of the drawer unit.

[0034] In an exemplary embodiment of the present application, the exhaust device further includes a ferrule, one end of the ferrule is sleeved on the first air outlet, and the other end of the ferrule is sleeved on the second exhaust pipe, and the ferrule is used to connect the first air outlet and the second exhaust pipe.

[0035] Another technical solution among the above technical solutions has the following advantages or beneficial effects:

[0036] Connecting the second exhaust pipe to the first air outlet through a ferrule can avoid the problem of poor connection effect caused by direct connection of the second exhaust pipe to the first air outlet. The ferrule can ensure the airtightness of the connection between the second exhaust pipe and the first air outlet, avoiding the problem of the second exhaust pipe falling off from the first air outlet.

[0037] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by practice of the present application.

[0038] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0040] Figure 1 A schematic diagram of the three-dimensional structure of a refrigerator provided in an embodiment of the present application is shown.

[0041] Figure 2 A structural schematic diagram of the connection between the storage drawer and the drawer body provided in an embodiment of the present application is shown.

[0042] Figure 3 A structural schematic diagram of the connection between the air extraction device provided in an embodiment of the present application and the drawer body is shown.

[0043] Figure 4 A front view structural schematic diagram of the connection between the air extraction device provided in an embodiment of the present application and the drawer body is shown.

[0044] Figure 5 A structural schematic diagram shows that a separation component connecting the air extraction device provided in an embodiment of the present application and the drawer body is arranged on the top wall of the drawer body.

[0045] Figure 6 A schematic cross-sectional structure diagram of the gas separation shell, the first gas extraction pipe and the gas extraction joint provided in an embodiment of the present application is shown.

[0046] Figure 7 A schematic diagram of the structure of a filter element for separating gas provided in an embodiment of the present application is shown.

[0047] Figure 8 A schematic structural diagram of the connection between the gas separation shell and the gas extraction device provided in an embodiment of the present application is shown.

[0048] Figure 9 A schematic diagram of the exploded structure of the air extraction joint, the first air outlet, and the first air extraction pipe provided in an embodiment of the present application is shown.

[0049] Figure 10 Shown Figure 3 Schematic diagram of the structure where the first exhaust pipe is connected to the exhaust joint at A in the middle.

[0050] Figure 11 A structural schematic diagram showing a second exhaust pipe provided in an embodiment of the present application is shown.

[0051] Figure 12 A schematic structural diagram of the gas separation shell provided by an embodiment of the present application and the inner top wall of the drawer body is shown.

[0052] Figure 13 Shown Figure 8 Schematic diagram of the structure in which the second exhaust pipe at B is connected to the first air outlet through a ferrule.

[0053] Description of reference numerals:

[0054] 100, refrigerator; 110, cabinet; 120, storage compartment; 130, door;

[0055] 140, drawer unit; 141, drawer body; 1410, exhaust connector; 1411, buckle; 142, storage drawer; 1420, drawer body; 1421, door;

[0056] 150, exhaust device; 151, exhaust member; 152, first exhaust pipe; 153, second exhaust pipe; 1530, first exhaust section; 1531, second exhaust section; 1532, third exhaust section; 154, ferrule; 154a, first ferrule; 154b, second ferrule; 154c, third ferrule;

[0057] 161. Gas separation shell; 1610. First air inlet; 1611. First air outlet; 1612. Accommodating chamber; 1613. Slot; 1614. Top wall; 1615. Bottom wall; 1616. First side wall; 1617. Second side wall; 1618. Third side wall; 1619. Fourth side wall; 162. Gas filter unit; 1620. Filter unit body; 1620a. Second air inlet; 1620b. Second air outlet; 1621. Filter element. DETAILED DESCRIPTION

[0058] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.

[0059] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically specified.

[0060] In this application, unless otherwise specified or limited, terms such as "assembly" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0061] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0062] The embodiment of the present application provides a refrigerator 100 that can preserve and refrigerate food.

[0063] Among them, see Figure 1 As shown, the refrigerator 100 may include a housing 110. The housing 110 may be a hollow rectangular parallelepiped structure. The housing 110 may be configured as an outer shell of the refrigerator 100. It is understood that in other embodiments, the housing 110 may also be a hollow shell structure of other shapes.

[0064] The refrigerator 100 may further include a storage chamber 120. The interior of the housing 110 may define the storage chamber 120, which may serve as an independent storage space, such as a freezer, a refrigerator, and a temperature-changing chamber, etc., and may meet different requirements of freezing, refrigeration, and temperature-changing according to different types of food to store food.

[0065] In some embodiments, a plurality of storage rooms 120 spaced apart from each other may be provided in the box body 110 , and the plurality of storage rooms 120 may be arranged vertically or horizontally.

[0066] In some embodiments, the refrigerator 100 may further include a door 130. Figure 1 As shown, a door 130 may be provided on the front side of the housing 110, and the door 130 may be used to open and close the storage compartment 120. The door 130 and the housing 110 may be connected by a hinge, so that the door 130 of the refrigerator 100 can rotate around the axis of the hinge to open and close the door 130 of the refrigerator 100, thereby opening and closing the corresponding storage compartment 120.

[0067] It is understandable that a plurality of doors 130 may be provided, and each door 130 may correspond to a storage chamber 120. Alternatively, a plurality of doors 130 may open and close a storage chamber 120 at the same time.

[0068] In some embodiments, the housing 110 may be provided with a housing liner (not shown), the front of which is open, and the storage compartment 120 is formed within the interior space of the housing liner. It is understood that multiple housing liner may be provided within the housing 110, and the multiple housing liner may be distributed side to side or vertically. Each housing liner may contain one or more storage compartments 120.

[0069] In some embodiments, see Figure 2 As shown, the refrigerator 100 may further include a drawer unit 140. A drawer unit 140 may be provided in the storage chamber 120. The drawer unit 140 may be maintained in a vacuum or low-pressure state to facilitate storage of food.

[0070] In other embodiments, the storage chamber 120 may be provided with a first drawer unit 140 and a second drawer unit 140. The first drawer unit 140 and the second drawer unit 140 may be distributed left to right or up to down, and the first drawer unit 140 and the second drawer unit 140 are independent of each other.

[0071] In some embodiments, three or more drawer units 140 may be provided in the storage chamber 120. The drawer units 140 may be arranged vertically or horizontally, and each drawer unit 140 is independent of each other.

[0072] In some embodiments, see Figure 2 As shown, the drawer unit 140 may include a drawer body 141. The drawer body 141 may have a storage chamber, and a storage port may be provided on one side of the storage chamber so that a storage drawer 142 described below is placed in the storage chamber to store food.

[0073] In some embodiments, see Figure 2As shown, the drawer unit 140 may further include a storage drawer 142 for storing food. The storage drawer 142 can slide in the storage chamber inside the drawer body 141, that is, the storage drawer 142 can be pushed into the storage chamber or pulled out from the storage chamber to facilitate storing food or taking food out from the storage drawer 142.

[0074] In some embodiments, see Figure 2 As shown, the storage drawer 142 may include a drawer body 1420. The top of the drawer body 1420 may be defined as an access opening for placing food. Pulleys may be provided at the bottom of the drawer body 1420, and rails may be provided inside the drawer body 141. The pulleys and rails cooperate with each other and can slide on the rails. The pulleys and rails allow the drawer body 1420 to slide within the storage chamber, allowing the drawer body 1420 to be pulled out or pushed in, thereby facilitating the addition of food to the drawer body 1420.

[0075] In other embodiments, a sliding rail may be provided at the bottom of the drawer body 1420, and a pulley may be provided on the inner bottom wall of the drawer body 141. The sliding rail and the pulley cooperate with each other, and the sliding rail can slide on the pulley. By sliding the sliding rail on the pulley, the drawer body 1420 can slide in the storage chamber to pull out or push in the drawer body 1420, so as to facilitate adding food into the drawer body 1420.

[0076] In some embodiments, see Figure 2 As shown, the storage drawer 142 may further include a door 1421. The door 1421 may be provided on one side of the drawer body 1420. When the drawer body 1420 is pushed into the storage chamber, the door 1421 may be used to close the storage opening to close the storage chamber to form a sealed space (not shown).

[0077] It is worth mentioning that the drawer unit 140 can be used to be defined as a vacuum or low pressure state.

[0078] In some embodiments, see Figure 3 As shown, in order to limit the drawer unit 140 to a vacuum state, the refrigerator 100 may further include an exhaust device 150. The exhaust device 150 may be provided in the box body 110, and is used to extract gas in the enclosed space to reduce the volume of gas in the enclosed space and extend the storage time of food.

[0079] In some embodiments, see Figure 4 As shown, the refrigerator 100 may further include a separation assembly (not shown). The separation assembly may be disposed in the storage chamber and spaced apart from the storage drawer 142 to prevent the separation assembly from affecting the pulling out or pushing in of the storage drawer 142 in the storage chamber, thereby ensuring the smoothness of the storage drawer 142.

[0080] In some embodiments, the separation assembly can be disposed within the storage chamber and connected to an external exhaust device 150. By utilizing the separation assembly in connection with the external exhaust device 150 to extract the gas in the enclosed space, compared to a solution in which the exhaust device 150 is directly connected to the drawer body 141 to extract the gas in the enclosed space, this solution can better extract the gas in the enclosed space, reduce the gas in the enclosed space, and ensure the freshness of the food in the enclosed space.

[0081] It can be understood that because the separation component is arranged in the storage chamber, the separation component is equivalent to being placed in a chamber filled with gas, and its contact area with the gas is larger than the solution in which the exhaust device 150 is directly connected to the drawer body 141, and the gas extraction rate is faster. Therefore, the separation component arranged in the storage chamber can be used to extract the gas in the enclosed space more quickly.

[0082] In some embodiments, see Figure 5 As shown, the separation assembly may include a gas separation shell 161. The gas separation shell 161 may be cylindrical or square, and is fixed inside the storage chamber.

[0083] In some embodiments, see Figure 6 As shown, the gas separation shell 161 may be an internal hollow structure.

[0084] A first gas inlet 1610 may be provided on the surface of the gas separation shell 161 , and the first gas inlet 1610 is communicated with the enclosed space.

[0085] In some embodiments, a first gas outlet 1611 may be further provided on the surface of the gas separation shell 161 . The first gas outlet 1611 is connected to the gas extraction device 150 and the interior of the gas separation shell 161 . The gas inside the gas separation shell 161 can be extracted through the gas extraction device 150 .

[0086] In some embodiments, a accommodating chamber 1612 is provided inside the gas separation shell 161 , and the gas extraction device 150 is in communication with the accommodating chamber 1612 to extract the gas in the accommodating chamber 1612 .

[0087] In some embodiments, see Figure 7 As shown, the separation assembly may further include a gas filter unit 162. The gas filter unit 162 may be disposed inside the gas separation housing 161 and may be capable of separating gases with different permeation rates.

[0088] In some embodiments, see Figure 7As shown, the gas filter unit 162 may include a filter unit body 1620. The filter unit body 1620 may be cylindrical or may have other shapes, such as a conical or square structure. The filter unit body 1620 may be provided with a second air inlet 1620a and a second air outlet 1620b. The second air inlet 1620a is connected to the first air inlet 1610. The second air outlet 1620b is connected to the interior of the gas separation housing 161, that is, to the accommodating chamber 1612.

[0089] It should be noted that the second air outlet 1620 b may be provided on the side wall of the filter unit body 1620 , or may be provided at other locations, as long as the second air outlet 1620 b is connected to the first air outlet 1611 .

[0090] In some embodiments, see Figure 7 As shown, the gas filter unit 162 may further include a filter element 1621. The filter element 1621 may be disposed within the filter unit body 1620 and may be capable of separating gases with different permeation rates.

[0091] When the air extraction device 150 is in operation, the gas with a high permeation rate in the enclosed space passes through the first air inlet 1610 and the second air inlet 1620a and enters the filter element 1621. It is then discharged from the second air outlet 1620b into the gas separation shell 161, that is, into the accommodating chamber 1612. Under the action of the air extraction device 150 and the gas filter unit 162, the gas with a high permeation rate is extracted from the first air outlet 1611, and the gas with a slow permeation rate is trapped in the enclosed space.

[0092] It can be understood that since the air intake areas of the first air inlet 1610 and the second air inlet 1620a are certain, when the gas with a fast permeation rate flows into the first air inlet 1610 and the second air inlet 1620a, there is no space left at the first air inlet 1610 and the second air inlet 1620a for the gas with a slow permeation rate, which will cause the gas with a slow permeation rate to be retained in the enclosed space.

[0093] It is worth mentioning that gases with fast permeation rates may include water vapor, carbon dioxide, hydrogen, helium and oxygen, etc.; gases with slow permeation rates may include nitrogen, methane, etc.

[0094] That is to say, the gas with slow permeation rate can be enriched in the enclosed space through the exhaust device 150 and the gas filter unit 162, while the gas with fast permeation rate such as water vapor, oxygen, etc. is extracted from the enclosed space by the exhaust device 150, thereby reducing the respiration of food and improving the preservation effect of food.

[0095] In some embodiments, filter element 1621 may be a microporous homogeneous membrane formed by melt-spinning a thermoplastic resin or wet-dry spinning a polymer solution, and then coated with an ultrathin organosilicon separation membrane. Filter element 1621 may be made of a polymer material, such as polyamide, polyethersulfone, or polytetrafluoroethylene.

[0096] It should be noted that the filter element 1621 can be composed of multiple fiber bundles, and the filter element 1621 can separate gases with different permeation rates.

[0097] For example, under pressure, when gas passes through the multiple fiber bundles, gases with fast permeation rates, such as oxygen, will quickly pass through the second gas outlet 1620b of the filter unit body 1620, and the second gas outlet 1620b is connected to the accommodating chamber 1612, thus concentrating gases with fast permeation rates, such as oxygen, inside the gas separation shell 161. However, since the area of ​​the first gas inlet 1610 is fixed, after the gas with fast permeation rates occupies a certain area of ​​the first gas inlet 1610, there is no area at the first gas inlet 1610 for gases with weaker permeation rates, such as nitrogen, to pass through, and they will be retained in the enclosed space, resulting in a large amount of inert gases such as nitrogen remaining in the enclosed space, while gases with fast permeation rates, such as oxygen, are extracted by the exhaust device 150, thereby reducing the oxygen content in the enclosed space and improving the vacuum degree of the enclosed space.

[0098] That is to say, oxygen is enriched inside the gas separation shell 161 through the filter element 1621, and the oxygen enriched inside the gas separation shell 161 is extracted through the exhaust device 150, thereby reducing the oxygen content in the enclosed space, thereby reducing the respiration of food and improving the preservation effect of the refrigerator 100.

[0099] It is worth mentioning that the separation component can be arranged on the inner top wall, inner side wall, inner bottom wall or the connection between the inner side wall and the inner top wall of the drawer body 141, as long as the separation component can extract the oxygen in the drawer unit 140.

[0100] In some embodiments, see Figure 5 As shown, due to the low density of water vapor in a confined space, water vapor easily gathers on the inner top wall of the drawer body 141 and condenses. Therefore, in order to solve the problem of water vapor easily condensing on the inner top wall of the drawer body 141 in a confined space, a separation component can be provided on the inner top wall of the drawer body 141.

[0101] When extracting gas from a confined space, the gas mixed with water vapor enters the filter element 1621 through the first air inlet 1610. Due to the fast permeation rate of water vapor and oxygen, water vapor and oxygen will flow out from the second air outlet 1620b of the filter unit body 1620 and accumulate inside the gas separation shell 161, while the gas with a slow permeation rate will remain in the confined space.

[0102] That is to say, by setting the separation component on the inner top wall of the drawer body 141, the oxygen content in the drawer unit 140 can be reduced, and the water vapor in the drawer unit 140 can be reduced, thereby improving the dehumidification effect of the drawer unit 140 and avoiding condensation on the top.

[0103] In some embodiments, the separation component can be arranged on the inner top wall of the drawer body 141, and is spaced apart from the top of the storage drawer 142 to avoid blocking the storage drawer 142. In addition to ensuring the vacuuming effect of the drawer unit 140, it also ensures the smoothness of pushing and pulling the storage drawer 142.

[0104] In some embodiments, see Figure 8 As shown, the gas separation shell 161 can be a flat structure. It can store a certain amount of gas while saving the space occupied by the separation component, avoiding obstruction of the storage drawer 142, and ensuring the smoothness of the storage drawer 142.

[0105] In some embodiments, see Figure 8 As shown, the top wall 1614 or the bottom wall 1615 of the gas separation housing 161 may be provided with the aforementioned first gas inlet 1610. The first gas inlet 1610 may be circular or other types of structures, such as square or triangular. The first gas inlet 1610 communicates with the enclosed space and allows gas in the enclosed space to flow in.

[0106] In some embodiments, the gas separation housing 161 includes a top wall 1614, a bottom wall 1615, and a first side wall 1616, a second side wall 1617, a third side wall 1618, and a fourth side wall 1619 disposed between the top wall 1614 and the bottom wall 1615. The first side wall 1616, the second side wall 1617, the third side wall 1618, and the fourth side wall 1619 are disposed around the top wall 1614 and the bottom wall 1615 to form the aforementioned accommodating chamber 1612 between the top wall 1614 and the bottom wall 1615.

[0107] In some embodiments, at least one first gas outlet 1611 is provided on the first side wall 1616, the second side wall 1617, the third side wall 1618 and the fourth side wall 1619 to increase the extraction rate of the gas in the containing chamber 1612, thereby accelerating the rate of reducing the oxygen content in the enclosed space.

[0108] In other embodiments, at least one first air outlet 1611 is provided on the first side wall 1616 , the second side wall 1617 and the third side wall 1618 , while the fourth side wall 1619 is not provided with the first air outlet 1611 , thereby reducing the number of first air outlets and reducing production costs.

[0109] In some embodiments, at least one first air outlet 1611 is provided on the fourth sidewall 1619 ; and no first air outlet 1611 is provided on the first sidewall 1616 , the second sidewall 1617 , and the third sidewall 1618 .

[0110] In some embodiments, the first sidewall 1616 and the second sidewall 1617 are each provided with at least one first air outlet 1611 , while the third sidewall 1618 and the fourth sidewall 1619 are not provided with a first air outlet 1611 .

[0111] In some other embodiments, the first sidewall 1616 and the second sidewall 1617 are not provided with at least one first air outlet 1611 , while the third sidewall 1618 and the fourth sidewall 1619 are both provided with a first air outlet 1611 .

[0112] In some other embodiments, the first sidewall 1616 and the third sidewall 1618 are not provided with at least one first air outlet 1611 , while the second sidewall 1617 and the fourth sidewall 1619 are both provided with a first air outlet 1611 .

[0113] In some other embodiments, at least one first air outlet 1611 is provided on the first sidewall 1616 and the third sidewall 1618 , while no first air outlet 1611 is provided on the second sidewall 1617 and the fourth sidewall 1619 .

[0114] In some other embodiments, at least one first air outlet 1611 is provided on each of the second sidewall 1617 and the third sidewall 1618 , while no first air outlet 1611 is provided on the first sidewall 1616 and the fourth sidewall 1619 .

[0115] In some other embodiments, the second sidewall 1617 and the third sidewall 1618 are not provided with at least one first air outlet 1611 , while the first sidewall 1616 and the fourth sidewall 1619 are both provided with a first air outlet 1611 .

[0116] In some other embodiments, at least one first air outlet 1611 is provided on the first sidewall 1616 ; and no first air outlet 1611 is provided on the second sidewall 1617 , the third sidewall 1618 , and the fourth sidewall 1619 .

[0117] In some further embodiments, at least one first air outlet 1611 is provided on the second sidewall 1617 ; and no first air outlet 1611 is provided on the first sidewall 1616 , the third sidewall 1618 , and the fourth sidewall 1619 .

[0118] In some other embodiments, at least one first air outlet 1611 is provided on the third sidewall 1618 ; and no first air outlet 1611 is provided on the first sidewall 1616 , the second sidewall 1617 , and the fourth sidewall 1619 .

[0119] In some other embodiments, the first air outlet 1611 is not provided on the first side wall 1616 ; the first air outlet 1611 is provided on the second side wall 1617 , the third side wall 1618 , and the fourth side wall 1619 .

[0120] In some other embodiments, the first air outlet 1611 is not provided on the second sidewall 1617 ; the first air outlet 1611 is provided on the first sidewall 1616 , the third sidewall 1618 , and the fourth sidewall 1619 .

[0121] In still other embodiments, the first air outlet 1611 is not provided on the third sidewall 1618 ; the first air outlet 1611 is provided on the first sidewall 1616 , the second sidewall 1617 , and the fourth sidewall 1619 .

[0122] At least one of the first sidewall 1616 , the second sidewall 1617 , the third sidewall 1618 and the fourth sidewall 1619 is provided with at least one first gas outlet 1611 , and the gas in the accommodating chamber 1612 is extracted by utilizing the first gas outlet 1611 .

[0123] In some embodiments, the gas filter unit 162 is extended in the thickness direction of the gas separation shell 161, that is, the gas filter unit 162 is vertically placed inside the gas separation shell 161. The second air inlet 1620a of the filter unit body 1620 is connected to the first air inlet 1610, and the second air outlet 1620b is connected to the accommodating chamber 1612.

[0124] In some embodiments, the top wall 1614 or the bottom wall 1615 of the gas separation housing 161 may be provided with a plurality of first air inlets 1610. Adjacent first air inlets 1610 are spaced apart from each other. By providing a plurality of first air inlets 1610, the oxygen extraction rate of the enclosed space can be increased, allowing the enclosed space to reach a hypoxic state more quickly.

[0125] In addition, the gas separation shell 161 is spaced apart from the inner wall of the drawer body 141 to ensure that the gas in the enclosed space can enter the interior of the gas separation shell 161 .

[0126] In other embodiments, the top wall 1614 and the bottom wall 1615 of the gas separation housing 161 may each be provided with a plurality of first gas inlets 1610, with adjacent first gas inlets 1610 spaced apart from each other, and the first gas inlets 1610 on the top surface of the gas separation housing 161 and the first gas inlets 1610 on the bottom surface of the gas separation housing 161 being arranged opposite each other. To prevent gas with a fast permeation rate from flowing out of the other first gas inlet 1610, an adhesive is used to bond the first gas inlet 1610 on the top or bottom surface of the gas separation housing 161.

[0127] In some embodiments, the adhesive can be made of a material with good chemical and heat resistance to prevent erosion by gas or failure due to temperature changes during the separation process. During the bonding process, it is necessary to ensure that the adhesive is evenly coated on both ends of the filter element 1621 to prevent gas leakage from unbonded areas.

[0128] It can be understood that when the top wall 1614 or the bottom wall 1615 of the gas separation shell 161 adopts multiple first air inlets 1610, the gas filter unit 162 can correspond one-to-one to the number of first air inlets 1610, or multiple first air inlets 1610 correspond to one gas filter unit 162, which can be specifically designed according to different embodiments.

[0129] In some embodiments, the first sidewall 1616 of the gas separation housing 161 may be provided with three first gas outlets 1611. The three first gas outlets 1611 are spaced apart from each other, and the three first gas outlets 1611 can increase the discharge rate of gas inside the gas separation housing 161, thereby enabling faster extraction of oxygen and water vapor in the enclosed space.

[0130] In some embodiments, the second sidewall 1617 of the gas separation housing 161 may be provided with three first gas outlets 1611. The three first gas outlets 1611 are spaced apart from each other, and the three first gas outlets 1611 can increase the discharge rate of gas inside the gas separation housing 161, thereby enabling faster extraction of oxygen and water vapor in the enclosed space.

[0131] In some embodiments, the third sidewall 1618 of the gas separation housing 161 may be provided with three first gas outlets 1611. The three first gas outlets 1611 are spaced apart from each other, and the three first gas outlets 1611 can increase the discharge rate of gas inside the gas separation housing 161, thereby enabling faster extraction of oxygen and water vapor from the enclosed space.

[0132] In other embodiments, the fourth sidewall 1619 of the gas separation housing 161 may be provided with three first gas outlets 1611. The three first gas outlets 1611 are spaced apart from each other, and the three first gas outlets 1611 can increase the discharge rate of gas inside the gas separation housing 161, thereby enabling faster extraction of oxygen and water vapor in the enclosed space.

[0133] In other embodiments, a first gas outlet 1611 may be provided on each of the first sidewall 1616, the second sidewall 1617, the third sidewall 1618, and the fourth sidewall 1619 of the gas separation housing 161. The first gas outlet 1611 is connected to the gas extraction device 150, which is used to extract oxygen and water vapor from the interior of the gas separation housing 161 to reduce the oxygen content and water vapor in the enclosed space.

[0134] In some further embodiments, the first sidewall 1616, the second sidewall 1617, the third sidewall 1618, and the fourth sidewall 1619 of the gas separation housing 161 may be provided with two first gas outlets 1611. The two first gas outlets 1611 are spaced apart from each other. The two first gas outlets 1611 can increase the amount of gas discharged from the gas separation housing 161, thereby enabling more rapid extraction of oxygen and water vapor from the enclosed space.

[0135] In still other embodiments, the first sidewall 1616, the second sidewall 1617, the third sidewall 1618, and the fourth sidewall 1619 of the gas separation housing 161 may be provided with three or more first gas outlets 1611. Adjacent first gas outlets 1611 are spaced apart. The presence of three or more first gas outlets 1611 can increase the amount of gas discharged from the gas separation housing 161, thereby enabling faster extraction of oxygen and water vapor from the enclosed space.

[0136] In some embodiments, see Figure 8 and Figure 9 As shown, three first gas outlets 1611 can be evenly spaced apart on the first sidewall 1616 of the gas separation shell 161. The three first gas extraction ports are located at the same height, and the spacing between adjacent first gas outlets 1611 is one-quarter the length of the first sidewall 1616. By ensuring that the spacing between adjacent first gas outlets is equal to one-quarter the length of the first sidewall, the three first gas outlets can evenly extract gas from the interior of the gas separation shell, avoiding the problem of uneven local gas concentration within the gas separation shell and the resulting uneven intake pressure at multiple first gas inlets, thereby ensuring that the intake rate at each first gas inlet is consistent.

[0137] In other embodiments, the three first gas outlets 1611 may also be respectively disposed on different sidewall surfaces of the gas separation shell 161 .

[0138] In some embodiments, see Figure 10 As shown, the drawer body 141 may be provided with an air extraction connector 1410 . The air extraction connector 1410 is plugged into the drawer body 141 .

[0139] In some embodiments, the exhaust connector 1410 can be provided with a first exhaust interface (not shown in the figure) and a second exhaust interface (not shown in the figure). The first exhaust interface is located on the outside of the drawer body 141, and the second exhaust interface is located on the inside of the drawer body 141. The exhaust connector 1410 is used to facilitate the extraction of gas from the gas separation shell 161.

[0140] In some embodiments, see Figure 11As shown, the air extraction device 150 may include an air extraction member 151. The air extraction member 151 may be disposed inside the housing 110 and may be a vacuum pump or other structure, which can form a negative pressure inside the gas separation shell 161, thereby ensuring that the gas with a fast permeation rate in the enclosed space flows into the filter element 1621 through the first air inlet 1610.

[0141] In some embodiments, see Figure 11 As shown, the air extraction device 150 may further include a first air extraction pipe 152. The first air extraction pipe 152 may be a hose for easy docking. A first end of the first air extraction pipe 152 is connected to the air extraction member 151, and a second end of the first air extraction pipe 152 is connected to a first air extraction interface on the outer side of the drawer body 141.

[0142] In some embodiments, see Figure 12 As shown, the exhaust device 150 may further include a second exhaust pipe 153. The second exhaust pipe 153 may be a hose for easy docking. The first end of the second exhaust pipe 153 is connected to the second exhaust interface on the inside of the drawer body 141, and the second end of the second exhaust pipe 153 is connected to the first air outlet 1611 on the gas separation shell 161 to extract the oxygen and water vapor enriched in the gas separation shell 161, thereby reducing the oxygen content in the enclosed space, ensuring the vacuum degree of the drawer unit 140, and further improving the dehumidification effect in the drawer unit 140, thereby improving the food preservation effect.

[0143] It can be understood that the first exhaust pipe 152, the second exhaust pipe 153, the first exhaust interface and the second exhaust interface can prevent the exhaust pipe from directly passing through the drawer and affecting the overall air tightness of the drawer body 141, thereby preventing external oxygen from leaking into the enclosed space and improving the oxygen extraction effect of the enclosed space.

[0144] In addition, the first air extraction interface and the second air extraction interface can be integrally formed with the drawer body 141 to further ensure the airtightness of the drawer body 141.

[0145] In some embodiments, see Figure 9 and Figure 13 As shown, the air extraction device 150 may further include a first ferrule 154a. The first ferrule 154a may be a tee pipe, and one port of the first ferrule 154a is connected to the first air outlet 1611a.

[0146] In some embodiments, see Figure 9 and Figure 13 As shown, the air extraction device 150 may further include a second ferrule 154b, which may be a tee pipe, and one port of the second ferrule 154b is connected to the second first air outlet 1611b.

[0147] In some embodiments, see Figure 9 and Figure 11 As shown, the air extraction device 150 may further include a third ferrule 154c. The third ferrule 154c may be a two-way tube, and one port of the third ferrule 154c is connected to the third first air outlet 1611c.

[0148] In some embodiments, see Figure 9 and Figure 13 As shown, the second air extraction pipe 153 may include a first air extraction section 1530. A first end of the first air extraction section 1530 is connected to the second air extraction interface.

[0149] In some embodiments, see Figure 9 and Figure 13 As shown, the second air extraction pipe 153 may further include a second air extraction section 1531. A first end of the second air extraction section 1531 is connected to the second section of the first air extraction section 1530 via a first ferrule 154a.

[0150] In some embodiments, see Figure 9 and Figure 13 As shown, the second air extraction pipe 153 may further include a third air extraction section 1532. The first end of the third air extraction section 1532 is connected to the second section of the second air extraction section 1531 through the second ferrule 154b, and the second end of the third air extraction section 1532 is connected to the other end of the third ferrule 154c.

[0151] The second exhaust pipe 153 is connected to the first air outlet 1611 through the first exhaust section 1530, the second exhaust section 1531, the third exhaust section 1532, the first ferrule 154a, the second ferrule 154b and the third ferrule 154c. The first ferrule 154a, the second ferrule 154b and the third ferrule 154c can prevent the second exhaust pipe 153 from falling off and causing air leakage.

[0152] In some embodiments, the first exhaust pipe 152 may be threadedly connected to the first exhaust interface to prevent the first exhaust pipe 152 from falling off, thereby ensuring the vacuuming effect on the drawer unit 140 .

[0153] Accordingly, the second exhaust pipe 153 can be threadedly connected to the second exhaust interface to prevent the second exhaust pipe 153 from falling off, thereby ensuring the vacuuming effect of the drawer unit 140.

[0154] In some embodiments, a plurality of fixing parts (not shown in the figure) may be further provided on the inner wall of the drawer body 141, and the first air extraction section 1530, the second air extraction section 1531 and the third air extraction section 1532 may all be snapped into the fixing parts to prevent the first air extraction section 1530, the second air extraction section 1531 and the third air extraction section 1532 from shaking in the drawer body 141, thereby ensuring the stability of air extraction.

[0155] In some embodiments, the gas separation shell 161 may be detachably connected to the inner top wall of the drawer body 141 to facilitate installation and removal between the gas separation shell 161 and the drawer body 141 .

[0156] In some embodiments, see Figure 8 、 Figure 11 and Figure 12 As shown, a card slot 1613 may be provided on two opposite ones of the first side wall 1616, the second side wall 1617, the third side wall 1618 and the fourth side wall 1619 of the gas separation shell 161, and a buckle 1411 that cooperates with the card slot 1613 may be provided on the inner top wall of the drawer body 141, and the gas separation shell 161 is connected to the inner side wall of the drawer body 141 through the card slot 1613 and the buckle 1411.

[0157] It is understandable that the slot 1613 and the first gas outlet 1611 on the gas separation shell 161 can be respectively arranged on different sides to avoid affecting the connection tightness between the second exhaust pipe 153 and the first gas outlet 1611, and to ensure the convenience of assembly of the separation component.

[0158] For example, the slot 1613 is provided on the second side wall 1617 and the fourth side wall 1619 , and the first air outlet 1611 is provided on the first side wall 1616 .

[0159] In other embodiments, a buckle 1411 may be provided on the outer wall of the gas separation shell 161 , and a slot 1613 cooperating with the buckle 1411 may be provided on the inner top wall of the drawer body 141 .

[0160] In some embodiments, the outer wall of the gas separation housing 161 may be provided with a plurality of slots 1613, and the inner top wall of the drawer body 141 may be provided with buckles 1411 corresponding to the slots 1613. The gas separation housing 161 is detachably connected to the drawer body 141 via the slots 1613 and the buckles 1411. By providing a plurality of slots 1613 and the buckles 1411, the gas separation housing 161 can be stably fixed in the drawer body 141.

[0161] In the description of this specification, the reference terms "some embodiments", "exemplarily", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0162] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent application.

Claims

1. A refrigerator, characterized in that: include: Box; a storage chamber formed in the box; A door, used for opening and closing the storage chamber; Drawer unit, at least one of the drawer units is provided in the storage chamber, and the drawer unit comprises: A drawer body having a storage opening; a storage drawer capable of sliding relative to the drawer body, the storage drawer capable of closing the storage opening of the drawer body to form a closed space with the drawer body; An air extraction device is provided in the box; The refrigerator further comprises: a gas separation shell having an internal hollow structure and provided with a first gas inlet and at least one first gas outlet, wherein the first gas inlet is in communication with the enclosed space, and the interior of the gas separation shell is in communication with the gas extraction device through the first gas outlet; a gas filter unit disposed inside the gas separation shell, the gas filter unit being provided with a second air inlet and a second air outlet, the second air inlet being connected to the first air inlet correspondingly, and the second air outlet being connected to the first air outlet; Wherein, when the exhaust device is in operation, the gas in the enclosed space can enter the gas filter unit through the first air inlet and the second air inlet, and the gas selectively permeated through the gas filter unit is discharged through the second air outlet, and under the action of the exhaust device, the gas discharged from the second air outlet is extracted from the first air outlet.

2. The refrigerator according to claim 1, wherein: The gas filtration unit comprises: a filter unit body, wherein the filter unit body is provided with the second air inlet and the second air outlet; The filter element comprises a fiber bundle, and a plurality of the fiber bundles are integrated and arranged in the filter unit body.

3. The refrigerator according to claim 1, wherein: The refrigerator further includes a separation assembly, which is arranged on the inner top wall of the drawer body.

4. The refrigerator according to claim 1, wherein: A slot is provided on the outer side wall of the gas separation shell: A buckle that matches the slot is provided on the inner top wall of the drawer body; Wherein, the gas separation shell is snap-connected with the inner side wall of the drawer body through the snap-connection groove and the snap-connection buckle.

5. The refrigerator according to claim 1, wherein The gas separation shell has a flat structure; A plurality of the first gas inlets are provided on the top wall and / or the bottom wall of the gas separation shell, and adjacent first gas inlets are arranged at intervals.

6. The refrigerator according to claim 5, characterized in that The gas separation shell includes the top wall, the bottom wall, and a first side wall, a second side wall, a third side wall, and a fourth side wall disposed between the top wall and the bottom wall, wherein the first side wall, the second side wall, the third side wall, and the fourth side wall are disposed around the top wall and the bottom wall; At least one of the first side wall, the second side wall, the third side wall and the fourth side wall is provided with at least one first air outlet.

7. The refrigerator according to claim 6, characterized in that One of the first side wall, the second side wall, the third side wall and the fourth side wall is provided with three first air outlets, and adjacent first air outlets are spaced apart from each other.

8. The refrigerator according to claim 7, characterized in that The three first air outlets are evenly spaced and arranged on the first side wall, and the three first air outlets are located at the same height, and the distance between adjacent first air outlets is one quarter of the length of the first side wall.

9. The refrigerator according to claim 5, characterized in that An air extraction joint is provided on the outside of the drawer body, the air extraction joint is communicated with the enclosed space, and the air extraction joint is provided with a first air extraction interface located on the outside of the drawer body and a second air extraction interface located on the inside of the drawer body; The air extraction device comprises: Vacuum parts; a first air extraction pipe, wherein a first end of the first air extraction pipe is connected to the air extraction member, and a second end of the first air extraction pipe is connected to the first air extraction interface; A second air extraction pipe, wherein a first end of the second air extraction pipe is connected to the second air extraction interface, and a second end of the second air extraction pipe is connected to the first air outlet.

10. The refrigerator according to claim 9, characterized in that The exhaust device also includes a ferrule, one end of the ferrule is sleeved on the first air outlet, and the other end of the ferrule is sleeved on the second air exhaust pipe, and the ferrule is used to connect the first air outlet and the second air exhaust pipe.

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