Vacuum refrigerator

Abstract

The present application provides a vacuum refrigerator, comprising a refrigerator body, a vacuum pump and a flip joint; by hingedly connecting the flip joint on the inner wall of the refrigerator body, the flip joint can be connected to a vacuum box placed in the refrigerator and a vacuum pump arranged on the refrigerator body when flipped to a first position, thereby evacuating the vacuum box; an elastic shaft that can be elastically compressed and extended is provided on the flip joint; the vacuum refrigerator of the present application can shorten the axial length of the elastic shaft by compressing the elastic shaft, move the elastic shaft to a hinge hole facing the inner wall of the refrigerator, and after releasing the pressure on the elastic shaft, the elastic shaft restores its length and is inserted into the hinge hole, thereby realizing rapid installation of the flip joint in the refrigerator; by compressing the length of the elastic shaft, the flip joint can also be quickly removed from the inner wall of the refrigerator.

Description

Technical Field

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

[0002] A container containing food (such as a vacuum box) is evacuated to reduce the air pressure inside the container, thereby reducing the respiration of the food stored in the container and extending the storage time of the food.

[0003] The vacuum box can be placed in a refrigerator, and a vacuum pump and an adapter are set on the refrigerator. The adapter is connected to the suction port on the vacuum box to evacuate the vacuum box.

[0004] The adapter can be hinged to the inner wall of the refrigerator so that the adapter and the vacuum box can be releasably connected. The hinged connection method using a common hinge shaft is not convenient for installing and disassembling the adapter. Summary of the Invention

[0005] In some embodiments of the present application, a vacuum refrigerator is provided. A flip joint is hinged on the inner wall of the refrigerator body. The flip joint releasably connects a vacuum box placed in the refrigerator and a vacuum pump provided on the refrigerator body, thereby enabling evacuation of the vacuum box.

[0006] By arranging an elastic shaft that can be elastically compressed and extended on the flip joint, the axial length of the elastic shaft can be shortened by compressing the elastic shaft, and the elastic shaft is moved to the end facing the hinge hole on the inner wall of the refrigerator. After the pressure on the elastic shaft is released, the elastic shaft recovers its length and is inserted into the hinge hole, thereby realizing the rapid installation of the flip joint in the refrigerator; similarly, by compressing the length of the elastic shaft, the flip joint can also be quickly removed from the inner wall of the refrigerator.

[0007] In some embodiments of the present application, the elastic shaft includes a movable column and a pressure spring, and the movable column and the pressure spring are connected to form an elastic shaft; the movable column plays a hinged role, and the pressure spring plays an axially retractable role, so that the movable column can be designed as a rigid component with higher strength and better wear resistance, ensuring that the strength of the elastic shaft can meet the use requirements and a longer service life.

[0008] In some embodiments of the present application, a joint body is formed by setting a joint shell, a docking nozzle and an exhaust pipe, and the joint body is hinged to the inner wall of the refrigerator through an elastic shaft, so that the flip joint can be flipped to a preset first position to achieve docking with the vacuum box, and the vacuum pump and the vacuum box are connected through the exhaust pipe.

[0009] In some embodiments of the present application, a baffle is fixedly provided at the end of the connector housing away from the docking nozzle, so that the baffle limits the movement of the pressure spring at the end away from the movable column under pressure, thereby ensuring that the pressure spring can provide elastic force for the movable column to restore its extension.

[0010] In some embodiments of the present application, corresponding pressure springs and movable columns are respectively arranged on the left and right sides of the flip joint, and two corresponding hinge holes are opened on the inner wall, so that the hinge connection of the flip joint to the inner wall of the refrigerator can be more reliable.

[0011] In some embodiments of the present application, the baffle includes a first baffle and a second baffle, and the first baffle and the second baffle are respectively used to limit the movement of one end of a corresponding pressure spring under pressure, and the distance between the first baffle and the second baffle allows the exhaust pipe to pass between the first baffle and the second baffle, thereby effectively solving the arrangement problem of the exhaust pipe and making the internal structure of the flip joint more compact and reasonable.

[0012] In some embodiments of the present application, the elastic shaft is provided with a positioning piece, and a positioning hole matching the positioning piece is provided on the baffle, and the positioning piece can be positioned in the positioning hole; a first annular groove for positioning the pressure spring is provided on the positioning piece, so that the end of the spring close to the baffle is positioned on the baffle, preventing one end of the pressure spring from slipping on the baffle, so that the elastic shaft can work stably and reliably.

[0013] In some embodiments of the present application, the movable column includes a second insertion portion and a second stop portion fixed to each other; the second insertion portion can be movably inserted into the guide hole, and the second stop portion can be stopped outside the guide hole, thereby preventing the movable column from falling off from the guide hole under the elastic thrust of the pressure spring.

[0014] In some embodiments of the present application, a hinge seat is fixedly provided on the inner wall body of the refrigerator, and a hinge hole is opened on the hinge seat, thereby providing a fulcrum for the hinged installation of the flip joint on the inner wall of the refrigerator.

[0015] In some embodiments of the present application, a magnet is fixed on the flip joint, and an iron plate that can be adsorbed by the magnet is fixed on the inner wall of the refrigerator. When the flip joint is flipped to the second position around the elastic axis, the magnet is adsorbed on the iron plate, thereby fixing the flip joint, providing convenience for taking and placing the vacuum box.

[0016] In some embodiments of the present application, a vacuum refrigerator is provided, comprising:

[0017] The refrigerator body has a hinge hole on its inner wall;

[0018] A vacuum pump is provided on the refrigerator body;

[0019] The flip joint comprises a joint body and an elastic shaft; the elastic shaft is arranged on the joint body;

[0020] The connector body is used to connect the vacuum box and the vacuum port of the vacuum pump when it is flipped around the elastic axis to the first position;

[0021] The elastic shaft can be compressed along its axial direction and resume extension after losing pressure; when the elastic shaft is extended, it can be inserted into the hinge hole, thereby hingedly connecting the joint body to the inner wall of the refrigerator body; when the elastic shaft is compressed, it can be retracted from the hinge hole, thereby releasing the hinged relationship between the joint body and the inner wall.

[0022] In some embodiments of the present application, the elastic shaft includes a movable column and a pressure spring; one end of the movable column abuts against one end of the pressure spring, so that when the movable column moves axially and squeezes the pressure spring, the length of the pressure spring shortens, thereby causing the movable column to retract from the hinge hole.

[0023] In some embodiments of the present application, the vacuum box is placed in the refrigerator body; an air intake port is provided on the outside of the vacuum box for storing items after vacuuming through the air intake port;

[0024] The joint body includes a joint shell, a docking nozzle and an exhaust pipe; the docking nozzle is arranged near one end of the joint shell and is used to releasably dock with the air inlet; one end of the exhaust pipe is connected to the air inlet of the vacuum pump, passes through the shell and is connected to the docking port through its other end;

[0025] When the joint body is flipped around the elastic axis to the first position, the docking nozzle docks with the air inlet, thereby connecting the air inlet and the air extraction pipe;

[0026] In some embodiments of the present application, a baffle is fixedly provided at one end of the connector housing away from the docking nozzle; the baffle is used to limit the movement of the end of the pressure spring away from the movable column under pressure;

[0027] The side plate of the joint housing is provided with a guide hole matched with the movable column; the movable column can be moved along its axial direction and passed through the guide hole.

[0028] In some embodiments of the present application, the side panel includes a left side panel and a right side panel;

[0029] There are two pressure springs, two movable columns, and two guide holes respectively; the two guide holes are respectively opened on the left plate and the right plate; the two movable columns are respectively inserted into the guide holes on the left plate and the right plate; the two pressure springs act on the two movable columns respectively;

[0030] Two hinge holes are provided on the inner wall; each hinge hole corresponds to one movable column.

[0031] In some embodiments of the present application, the baffle includes a first baffle and a second baffle; the first baffle is arranged close to the left side plate, and is used to limit the movement of one end of the pressure spring; the second baffle is arranged close to the right side plate, and is used to limit the movement of one end of the other pressure spring; the first baffle and the second baffle are spaced apart by a distance so that the exhaust pipe can pass between the first baffle and the second baffle.

[0032] In some embodiments of the present application, a positioning hole is provided on the baffle;

[0033] The elastic shaft also includes a positioning piece; the positioning piece includes a first insertion portion and a first stop portion fixed to each other; the first insertion portion is used to be inserted into the positioning hole; the first stop portion can be stopped outside the positioning hole, and the end portion is provided with a first annular groove for accommodating an end of the pressure spring away from the movable column.

[0034] In some embodiments of the present application, the movable column includes a second insertion portion and a second stop portion fixed to each other; the second insertion portion can be movably inserted into the guide hole; the second stop portion can be stopped outside the guide hole, and an end away from the second insertion portion is provided with a second annular groove for accommodating an end of the pressure spring contacting the movable column.

[0035] In some embodiments of the present application, the inner wall includes an inner wall body and a hinge seat; the hinge seat is fixed on the inner wall body; and the hinge hole is opened on the hinge seat.

[0036] In some embodiments of the present application, a magnet is fixed on the flip joint; an iron plate is fixed on the inner wall; when the flip joint flips to the second position around the elastic axis, the magnet is adsorbed on the iron plate, thereby fixing the flip joint in the second position. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the three-dimensional structure of a vacuum refrigerator in one embodiment of the present application.

[0038] Figure 2 It is a schematic diagram of the three-dimensional structure of the vacuum box in one embodiment of the present application.

[0039] Figure 3 It is a schematic diagram of the three-dimensional structure in which the flip joint is hinged on the hinge seat in one embodiment of the present application.

[0040] Figure 4 It is a schematic diagram of the three-dimensional structure of the hinge seat in one embodiment of the present application.

[0041] Figure 5 It is a schematic diagram of the three-dimensional structure of the flip joint in one embodiment of the present application.

[0042] Figure 6 It is a schematic diagram of the three-dimensional structure of the connector housing in one embodiment of the present application.

[0043] Figure 7 This is a schematic diagram of the three-dimensional structure in which the elastic shaft is installed in the joint housing in one embodiment of the present application.

[0044] Figure 8 It is a schematic diagram of the three-dimensional structure of the elastic shaft in one embodiment of the present application.

[0045] Figure 9 It is a schematic diagram of the three-dimensional structure of the positioning member in one embodiment of the present application.

[0046] Figure 10 It is a schematic diagram of the three-dimensional structure of the movable column in one embodiment of the present application.

[0047] Reference numerals:

[0048] 1. Refrigerator body; 11. Inner wall; 111. Inner wall body; 112. Hinge seat; 1121. Seat body; 1122. Support plate; 1123. Hinge hole; 12. Bracket;

[0049] 2. Flip connector; 21. Connector body; 211. Connector housing; 2111. Left side plate; 2112. Right side plate; 2113. Rear side plate; 2114. Bottom plate; 2115. Through hole; 2116. Guide hole; 212. Docking nozzle; 213. First baffle; 214. Second baffle; 215. Positioning hole; 22. Elastic shaft; 221. Movable column; 2211. Second insertion portion; 2212. Second stop portion; 2213. Second annular groove; 222. Pressure spring; 223. Positioning member; 2231. First insertion portion; 2232. First stop portion; 2233. First annular groove; 2234. Boss;

[0050] 3. Vacuum box; 31. Air intake. DETAILED DESCRIPTION

[0051] Typical embodiments that embody the features and advantages of the present application will be described in detail in the following description. It should be understood that the present application can have various variations in different embodiments without departing from the scope of the present application, and the descriptions and illustrations therein are essentially for illustrative purposes and are not intended to limit the present application.

[0052] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0053] Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the present disclosure, rather than implying that each embodiment of the application must have the described feature. In addition, it should be noted that this specification describes many features. Although certain features can be combined together to illustrate possible system designs, these features can also be used in other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0054] In the embodiments shown in the accompanying drawings, directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of various components of the present application are not absolute but relative. These descriptions are applicable when these components are in the positions shown in the accompanying drawings. If the descriptions of the positions of these components are changed, the directional indications will also change accordingly.

[0055] Evacuating food containers (such as vacuum boxes) reduces the air pressure inside, thereby reducing the respiration of the food inside and extending its storage life. Vacuum boxes can also be placed in the refrigerator, where the dual effects of vacuum and low temperature further extend the shelf life of the food inside.

[0056] A vacuum pump and an adapter are provided on the refrigerator, and the adapter is connected to the air inlet on the vacuum box to evacuate the vacuum box. The adapter can be hinged to the inner wall of the refrigerator so that the adapter and the vacuum box can be releasably connected.

[0057] The preferred embodiments of the present application are further described in detail below in conjunction with the drawings of this specification.

[0058] Reference Figure 1 and Figure 2 The vacuum refrigerator includes a refrigerator body 1, a vacuum pump (not shown in the figure) and a flip joint 2.

[0059] The inner wall 11 of the refrigerator body 1 forms a refrigeration chamber for refrigerating food. A hinged hole is provided on the inner wall 11 for hingedly mounting a tilt joint 2. A vacuum pump is mounted on the refrigerator body 1, and its suction port is connected to the tilt joint 2 via a suction pipe. The tilt joint 2 is hingedly connected to the hinged hole via its elastic shaft and is equipped with a docking nozzle that mates with the suction port 31 of the vacuum box 3.

[0060] Therefore, after placing the vacuum box 3 at a set position in the refrigeration chamber, the flip joint 2 can be rotated around the elastic axis to connect the docking nozzle on the flip joint 2 to the air intake 31 of the vacuum box 3, and then the vacuum pump can be started to evacuate the vacuum box 3.

[0061] The vacuum box 3 can be part of a vacuum refrigerator or a separate box-shaped container that can be removed from the refrigerator. If the vacuum box 3 is a separate box-shaped container that can be removed from the refrigerator, multiple vacuum boxes 3 can be interchangeably used in the same vacuum refrigerator. The air intake 31 can be located at the top of the vacuum box 3.

[0062] A bracket 12 for placing the vacuum box 3 can be provided in the refrigerator compartment of the refrigerator. After the vacuum box 3 is placed in the correct position on the bracket 12, the flip joint 2 can be rotated to achieve docking between the docking nozzle and the air inlet 31 on the vacuum box 3.

[0063] The inner wall 11 of the refrigerator body 1 may specifically include an inner wall body 111 and a hinge seat 112 fixed on the inner wall body 111 .

[0064] Reference Figure 3 and Figure 4 The hinged seat 112 includes a seat body 1121 and a support plate 1122. The seat body 1121 can be detachably fixed to the inner wall body 111, and the support plate 1122 is fixed to the seat body 1121. The support plates 1122 can be specifically two parallel plates welded to the seat body 1121. The hinge holes 1123 are formed through the support plates 1122. The hinge holes 1123 on the two support plates 1122 are coaxial.

[0065] In some embodiments, the inner wall 11 of the refrigerator body 1 may also include only the inner wall body 111. By providing a hinge hole in the inner wall body 111, the inner wall body 111 can also cooperate with the elastic shaft 22 on the flip joint 2 to achieve a hinged connection. Alternatively, only one hinge hole may be provided, and the hinged connection with the elastic shaft 22 is achieved through the hinge hole.

[0066] An iron plate (not shown in the figure) can be fixed on the inner wall body 111 or the hinge seat 112, so that when the flip joint 2 is flipped close to the iron plate, a magnet (not shown in the figure) set in the flip joint 2 can be adsorbed with the flip joint 2 to fix the flip joint 2.

[0067] Reference Figure 5 The flip joint 2 includes a joint body 21 and an elastic shaft 22. The elastic shaft 22 is mounted on the joint body 21, so that the flip joint 2 can be hinged on the inner wall 11 by the cooperation between the elastic shaft 22 and the hinge hole on the inner wall 11 of the refrigerator body 1.

[0068] Reference Figure 6 and Figure 7 The connector body 21 includes a connector housing 211, a docking nozzle 212, and an exhaust pipe. The docking nozzle 212 can be provided on the lower surface of the connector housing 211 near the end thereof. The docking nozzle 212 can be releasably connected to the air intake port 31 on the vacuum box 3. The docking nozzle 212 can be releasably connected to the air intake port 31 on the vacuum box 3 by means of a snap-fit ​​or screw-fit.

[0069] The joint housing 211 may be specifically a housing structure surrounded by a left side plate 2111 , a right side plate 2112 , a rear side plate 2113 , a bottom plate 2114 , a top plate and other parts.

[0070] The left and right plates 2111 and 2112 can be parallel structures formed by bending the front ends of a single sheet of material. Each plate can be designed with a stepped surface or other configuration based on the shape and installation dimensions of the connector housing 211. Each plate 2111 and 2112 has a guide hole 2116 formed in the same axis, allowing the elastic shaft 22 to extend from or retract into the connector housing 211.

[0071] In some embodiments, the guide hole 2116 may be provided on only one of the side panels, and the elastic shaft 22 may extend to one side into the hinge hole or retract from the hinge hole through only the guide hole 2116 on the side panel.

[0072] The rear side plate 2113 can be formed by bending the end of the bottom plate 2114 upward. A through hole 2115 is provided on the rear side plate 2113 for the air extraction pipe to pass through the through hole 2115 into the joint housing 211 and communicate with the docking nozzle 212 inside the joint housing 211.

[0073] The top plate cover is provided on the left side plate 2111 , the right side plate 2112 and the rear side plate 2113 .

[0074] Inside the joint housing 211, a magnet can be fixedly set on the lower surface of the top plate. The magnet located in the joint housing 211 can be set close to the front end. In the case where an iron plate is fixed on the inner wall 11. Through the adsorption effect of the magnet and the iron plate, the flip joint 2 can be adsorbed and fixed in the second position. For example, when the axis of the elastic shaft 22 is horizontal, the flip joint 2 can be flipped up and down. When the flip joint 2 is flipped upward to a vertical position, it reaches the second position. One end of the magnet can be adsorbed on the iron plate on the inner wall 11, thereby fixing the flip joint 2 in this position.

[0075] Continue to refer to Figure 5 and Figure 6 The docking nozzle 212 can be located on the lower surface of the bottom plate 2114 of the connector housing 211, near the end of the connector housing 211. When the connector body 21 is flipped about the elastic shaft 22 to the first position, the docking nozzle 212 docks with the air inlet 31, thereby connecting the air inlet 31 with the exhaust pipe. The docking nozzle 212 can be releasably docked with the air inlet 31 on the vacuum box 3 through various methods such as snap-fitting and screwing. The first position can be when the connector body 21 is flipped to a horizontal position.

[0076] A baffle is fixedly mounted inside the connector housing 211 at one end away from the docking nozzle 212. The baffle, through direct or indirect contact, blocks one end of the elastic shaft 22 from moving in the direction of compression, thereby ensuring that after the pressure is released, the spring shaft can be inserted into the hinge hole 1123 due to its elastic restoring force.

[0077] The baffles may specifically include a first baffle 213 and a second baffle 214. The first baffle 213 is positioned near the left side plate 2111 and prevents the right end of the elastic shaft 22 on the left side from moving rightward, thereby allowing the elastic shaft 22 to extend to the left after the external pressure is removed and insert into the hinge hole 1123 on the left side. The second baffle 214 is positioned near the right side plate 2112 and prevents the left end of the elastic shaft 22 on the right side from moving leftward, thereby allowing the elastic shaft 22 to extend to the right after the external pressure is removed and insert into the hinge hole 1123 on the right side.

[0078] The distance between the first baffle 213 and the second baffle 214 allows the exhaust pipe to pass through the two baffles, and the structure is compact, avoiding occupying a large space in the joint housing 211. It can reduce the bending of the exhaust pipe, thereby making the exhaust more smooth.

[0079] A positioning hole 215 is provided on the baffle for positioning one end of the elastic shaft 22 to prevent the end of the elastic shaft 22 contacting the baffle from slipping on the baffle when the elastic shaft 22 is squeezed.

[0080] When the elastic shaft 22 is a component that passes through the inside of the joint shell 211, the baffle can also be omitted. The two ends of the elastic shaft 22 extend to both sides from the two guide holes 2116 on the left plate 2111 and the right plate 2112 and are respectively inserted into the corresponding two hinge holes 1123.

[0081] For example, two movable posts are located at either end of a pressure spring, thereby forming an elastic shaft extending through the interior of the connector housing 211. The pressure spring is located within the connector housing 211. The two movable posts are axially movable through guide holes 2116 on the left side plate 2111 and guide holes 2116 on the right side plate 2112, respectively. The elastic shaft in this embodiment is suitable for use when there is no baffle within the connector housing 211.

[0082] Reference Figure 8 The elastic shaft 22 specifically includes a movable post 221, a pressure spring 222, and a positioning member 223. One end of the movable post 221 abuts one end of the pressure spring 222 and is axially movable within a guide hole 2116 on the side plate. The positioning member 223 abuts the other end of the pressure spring 222 and is positioned within a positioning hole 215 on the baffle. Consequently, when the movable post 221 moves axially and compresses the pressure spring 222, the length of the pressure spring 222 shortens, causing the movable post 221 to retract from the hinge hole 1123.

[0083] Reference Figure 9 The positioning member 223 can be a stepped shaft-shaped rotating body, including a first insertion portion 2231 and a first stop portion 2232. The first insertion portion 2231 can be fitted with the positioning hole 215, thereby being inserted into the positioning hole 215 to prevent the positioning member 223 from radially moving beyond the allowable range. The first stop portion 2232 has a diameter greater than that of the positioning hole 215, thereby being positioned outside the positioning hole 215, preventing the positioning member 223 from passing through the positioning hole 215, thereby acting as a stop for one end of the elastic shaft 22.

[0084] The end of the first stopper 2232 is provided with a first annular groove 2233 for accommodating the end of the pressure spring 222 away from the movable post 221, thereby maintaining contact between the pressure spring 222 and the positioning member 223. Alternatively, a boss 2234 may be provided at the end of the first stopper 2232 to mate with the end of the pressure spring 222. The boss 2234 extends from one end of the pressure spring 222 into the pressure spring 222, similarly preventing the positioning member 223 and the pressure spring 222 from becoming misaligned and disengaged. Alternatively, the first annular groove 2233 may be provided at the end of the first stopper 2232, while the boss 2234 is fixedly provided thereto, thereby providing a dual position limit function for greater reliability.

[0085] Reference Figure 10The movable column 221 can be specifically a stepped shaft-shaped rotating body, comprising a second insertion portion 2211 and a second stop portion 2212, which are fixedly connected. The second insertion portion 2211 can be fitted with the guide hole 2116, thereby being inserted into the positioning hole 215 and being able to move axially within the guide hole 2116. The diameter of the second stop portion 2212 is larger than that of the guide hole 2116, thereby preventing the movable column 221 from passing through the guide hole 2116 and being disengaged when extended.

[0086] A second annular groove 2213 is defined at the end of the second stopper 2212 for accommodating an end of the pressure spring 222 close to the movable post 221 , so that the pressure spring 222 maintains contact with the movable post 221 .

[0087] In a specific implementation, when a first baffle 213 and a second baffle 214 are provided, each baffle corresponds to an elastic shaft 22 formed by a pressure spring 222, a movable post 221, and a positioning member 223. The two movable posts 221 are respectively inserted into the guide holes 2116 on the left side plate 2111 and the guide holes 2116 on the right side plate 2112. The two positioning members 223 are respectively positioned in the positioning holes 215 of the first baffle 213 and the positioning holes 215 of the second baffle 214. The two pressure springs 222 are respectively disposed between the two positioning members 223 and the two movable posts 221.

[0088] In some embodiments, the elastic shaft may also be an elastic body that is elastically compressible and stretchable along the axial direction, and the elastic body is an integral component made of elastic material.

[0089] According to the above structural setting, the installation and working process of the flip joint 2 in the vacuum refrigerator of the present application is as follows:

[0090] Press the two movable columns 221 extending from the left plate 2111 and the right plate 2112 on both sides of the flip joint 2 toward the middle, so that the movable columns 221 retract into the joint housing 211. Move the flip joint 2 to where the two movable columns 221 are facing the corresponding hinge holes 1123, and release the pressure on the two movable columns 221. Under the elastic restoring force of the pressure spring 222, the movable columns 221 resume their extension and are inserted into the corresponding hinge holes 1123 respectively. Thus, the installation process of the flip joint 2 inside the refrigerator body 1 is completed. After the installation of the flip joint 2 is completed, the flip joint 2 can be rotated upward to flip the flip joint 2 to the upright state, that is, the second position. The magnet on the flip joint 2 can be adsorbed on the iron plate fixed on the inner wall 11, thereby fixing the flip joint 2 in the upright state to facilitate the placement of the vacuum box 3.

[0091] Place the vacuum box 3 containing food in the correct position on the bracket 12 inside the refrigerator body 1, and rotate the flip joint 2 downward so that the docking nozzle 212 on the flip joint 2 docks with the air intake 31 on the vacuum box 3. After the docking nozzle 212 on the flip joint 2 and the air intake 31 on the vacuum box 3 are docked and fixed, the vacuum pump can be started to evacuate the vacuum box 3 to extend the freshness of the food in the vacuum box 3.

[0092] When the flip joint 2 needs to be replaced or repaired, the two movable posts 221 on both sides can be squeezed from both ends toward the center along the axial direction, so that the two movable posts 221 are retracted into the joint housing 211. In this way, the hinged relationship between the flip joint 2 and the inner wall 11 of the refrigerator body 1 is released, making it easier to repair or replace the flip joint 2.

[0093] Although the present application has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary rather than restrictive. Since the present application can be embodied in various forms without departing from the spirit or essence of the present application, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A vacuum refrigerator, characterized in that: include: The refrigerator body has a hinge hole on its inner wall; A vacuum pump is provided on the refrigerator body; The flip joint comprises a joint body and an elastic shaft; the elastic shaft is arranged on the joint body; The connector body is used to connect the vacuum box and the vacuum port of the vacuum pump when it is flipped around the elastic axis to the first position; The elastic shaft can be compressed along its axial direction and recover its extension after losing pressure; when the elastic shaft is extended, it can be inserted into the hinge hole, thereby hingedly connecting the joint body to the inner wall of the refrigerator body; when the elastic shaft is compressed, it can be retracted from the hinge hole, thereby releasing the hinged relationship between the joint body and the inner wall; The elastic shaft includes a movable column and a pressure spring; one end of the movable column abuts against one end of the pressure spring, so that when the movable column moves axially and compresses the pressure spring, the length of the pressure spring shortens, thereby causing the movable column to retract from the hinge hole; The vacuum box is placed in the refrigerator body; an air intake port is provided on the outside of the vacuum box for storing items after vacuuming through the air intake port; The joint body includes a joint shell, a docking nozzle and an exhaust pipe; the docking nozzle is arranged near one end of the joint shell and is used to releasably dock with the air inlet; one end of the exhaust pipe is connected to the air inlet of the vacuum pump, passes through the shell and is connected to the docking port through its other end; When the joint body is flipped around the elastic axis to the first position, the docking nozzle docks with the air inlet, thereby connecting the air inlet and the air extraction pipe; A baffle is fixedly provided at one end of the joint housing away from the docking nozzle; the baffle is used to limit the movement of the end of the pressure spring away from the movable column under pressure; The side plate of the joint housing is provided with a guide hole matched with the movable column; the movable column can be moved along its axial direction and passed through the guide hole.

2. The vacuum refrigerator according to claim 1, characterized in that The side panels include a left side panel and a right side panel; There are two pressure springs, two movable columns, and two guide holes respectively; the two guide holes are respectively opened on the left plate and the right plate; the two movable columns are respectively inserted into the guide holes on the left plate and the right plate; the two pressure springs act on the two movable columns respectively; Two hinge holes are provided on the inner wall; each hinge hole corresponds to one movable column.

3. The vacuum refrigerator according to claim 2, characterized in that The baffle includes a first baffle and a second baffle; the first baffle is arranged close to the left side plate, and is used to limit the movement of one end of the pressure spring; the second baffle is arranged close to the right side plate, and is used to limit the movement of one end of the other pressure spring; the first baffle and the second baffle are spaced apart by a distance so that the exhaust pipe can pass between the first baffle and the second baffle.

4. The vacuum refrigerator according to claim 1, wherein: The baffle is provided with a positioning hole; The elastic shaft also includes a positioning piece; the positioning piece includes a first insertion portion and a first stop portion fixed to each other; the first insertion portion is used to be inserted into the positioning hole; the first stop portion can be stopped outside the positioning hole, and the end portion is provided with a first annular groove for accommodating an end of the pressure spring away from the movable column.

5. The vacuum refrigerator according to claim 1, wherein: The movable column includes a second insertion portion and a second stop portion fixed to each other; the second insertion portion can be movably inserted into the guide hole; the second stop portion can be stopped outside the guide hole, and an end away from the second insertion portion is provided with a second annular groove for accommodating an end of the pressure spring contacting the movable column.

6. The vacuum refrigerator according to claim 1, wherein: The inner wall comprises an inner wall body and a hinge seat; the hinge seat is fixed on the inner wall body; and the hinge hole is provided on the hinge seat.

7. The vacuum refrigerator according to claim 1, wherein: A magnet is fixed on the flip joint; an iron plate is fixed on the inner wall; when the flip joint flips to the second position around the elastic axis, the magnet is adsorbed on the iron plate, thereby fixing the flip joint in the second position.

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