Refrigerator pressure balancing structure and refrigerator
By designing the connection parts, brackets, and seals in the freezer compartment, the sealing state is automatically adjusted by external air pressure and its own weight, solving the problem of cold air leakage caused by the easy deformation of thin rubber sealing sheets, and improving the sealing reliability and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-04-10
AI Technical Summary
The thin rubber sealing sheet in the freezer compartment of existing refrigerators is prone to plastic deformation under long-term alternating hot and cold stress, which leads to gaps at the sealing interface, affecting cold air leakage and sealing reliability.
The structure adopts a connection part, bracket and seal, and uses external air pressure and its own weight to realize the position switching of the seal, so as to automatically adjust the sealing state when the pressure inside and outside the freezer is balanced, avoiding reliance on elastic deformation.
It improves the sealing performance of the freezer compartment and the service life of the sealing structure, ensuring pressure balance inside and outside the freezer compartment and preventing cold air leakage.
Smart Images
Figure CN224108433U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to pressure regulating tool technical field especially, relates to refrigerator pressure balance structure and refrigerator. BACKGROUND
[0002] The existing refrigerator freezing chamber is balanced to the pressure difference of door body inside and outside, and generally adopts the following structure scheme: the through hole is set up in the corresponding position of door jar and door shell, the plastic support with the through hole structure and the reinforcing rib position is preset as the foaming prefabricated part, and the thin layer rubber sealing sheet is embedded on the plastic support. The sealing sheet realizes the dynamic balance of the air pressure inside and outside the door body and the sealing function by relying on the elastic deformation.
[0003] However, the following technical defects exist in actual application: the thin layer rubber sealing sheet is limited by the material elastic modulus and assembly process precision, and is easy to produce plastic deformation under the long-term cold and hot alternating stress, so that the gap appears on the sealing interface, and the cold air leakage is caused.
[0004] The above technical defects directly affect the sealing reliability of the freezing chamber, and restrict the use performance and market competitiveness of the refrigerator product. INVENTION CONTENTS
[0005] The utility model discloses at least one of the technical problems in the related art is solved. To this end, the utility model provides a refrigerator pressure balance structure, the refrigerator pressure balance structure, by setting up the connecting portion, the support and the sealing element, can make the sealing element away from the first through hole under the action of external air pressure when the greater negative pressure is produced in the freezing chamber, realizes the communication of the freezing chamber outside and inside, so that the freezing chamber inside and outside pressure balance, after the freezing chamber inside and outside pressure balance, the sealing element can use the weight downward movement to the first through hole plugging, forms the sealing structure, and the sealing structure does not need to rely on the elastic deformation to adjust the refrigerator pressure, guarantees the sealing performance while, improve the service life of sealing structure.
[0006] The utility model discloses at least one of the technical problems in the related art is solved. To this end, the utility model provides a refrigerator pressure balance structure, the refrigerator pressure balance structure, by setting up the connecting portion, the support and the sealing element, can make the sealing element away from the first through hole under the action of external air pressure when the greater negative pressure is produced in the freezing chamber, realizes the communication of the freezing chamber outside and inside, so that the freezing chamber inside and outside pressure balance, after the freezing chamber inside and outside pressure balance, the sealing element can use the weight downward movement to the first through hole plugging, forms the sealing structure, and the sealing structure does not need to rely on the elastic deformation to adjust the refrigerator pressure, guarantees the sealing performance while, improve the service life of sealing structure.
[0007] According to the refrigerator pressure balance structure provided by the utility model, the support includes: a first body, at least part of the first body is connected with the connecting portion, the first body is provided with a second cavity and the second through hole, the first cavity, the second cavity and the second through hole are communicated, and part of the sealing element is inserted into the second cavity.
[0008] According to the refrigerator pressure balance structure provided by the utility model, the support further includes: a second body, the second body is connected with the first body, the diameter of the second body is less than the diameter of the first body, the second body is provided with a third through hole, the third through hole is communicated with the second cavity, and part of the sealing element is inserted into the third through hole.
[0009] According to the refrigerator pressure balance structure, the step surface between the first body and the second body is provided with the second through hole, and the second through hole is located outside the second body.
[0010] According to the refrigerator pressure balance structure, the sealing piece comprises: a third body inserted into the third through hole; a fourth body connected with the third body, wherein the diameter of the fourth body is greater than that of the third body; the fourth body has switchable first and second positions, in the case that the fourth body is in the first position, the fourth body has a spacing with the second body, and the fourth body abuts against the second end of the connecting part, in the case that the fourth body is in the second position, the fourth body abuts against the second body, and the fourth body has a spacing with the second end of the connecting part.
[0011] According to the refrigerator pressure balance structure, the sealing piece further comprises a fifth body, the fifth body is arranged between the third body and the fourth body, and the diameter of the fifth body is less than that of the third body.
[0012] According to the refrigerator pressure balance structure, the connecting part comprises: a pre-embedded part arranged in the freezer door body, wherein the pre-embedded part is provided with a channel; a shell arranged outside the freezer door body, wherein the shell is detachably connected with the pre-embedded part, the shell is provided with a third cavity and the first through hole, the third cavity is communicated with the channel, the third cavity and the channel are configured as the first cavity, the bracket and the sealing piece are arranged in the shell, and the bracket is connected with the shell.
[0013] According to the refrigerator pressure balance structure, one end of the pre-embedded part is provided with a first convex edge, and one end of the shell is provided with a second convex edge, wherein the second convex edge is detachably connected with the first convex edge.
[0014] According to the refrigerator pressure balance structure, further comprising a positioning piece, wherein the positioning piece is arranged in the pre-embedded part, and the positioning piece is used for abutting against a door frame of the freezer door body.
[0015] The utility model also provides a refrigerator, which comprises: a freezer door body, wherein the freezer door body comprises: a door frame and a door barrel, the door barrel is arranged in the door frame, the door barrel is provided with a fourth through hole, and the door frame is provided with a fifth through hole; the refrigerator pressure balance structure described above, wherein the connecting part of the refrigerator pressure balance structure is arranged in the door barrel, the first cavity of the connecting part is communicated with the fourth through hole, and the connecting part is arranged in the fifth through hole.
[0016] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of the application. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.
[0018] Figure 1 is one of the structural schematic diagrams of the refrigerator pressure balance structure provided by the embodiments of the present application;
[0019] Figure 2 is the second structural schematic diagram of the refrigerator pressure balance structure provided by the embodiments of the present application;
[0020] Figure 3 is Figure 1 the structural schematic diagram of the bracket and the sealing element shown in FIG. 1;
[0021] Figure 4 is Figure 3 the structural schematic diagram of the bracket shown in FIG. 2;
[0022] Figure 5 is Figure 3 the structural schematic diagram of the sealing element shown in FIG. 3;
[0023] Figure 6 is Figure 1 the structural schematic diagram of the connecting part shown in FIG. 4;
[0024] Figure 7 is the structural schematic diagram of the refrigerator freezer compartment door body;
[0025] Figure 8 is Figure 7 the local enlarged view of A in FIG. 5;
[0026] Figure 9 is the local schematic diagram of the door frame of the freezer compartment door body;
[0027] REFERENCE NUMERALS:
[0028] 10, embedded part; 20, shell; 30, first protrusion; 40, second protrusion; 50, third protrusion; 60, positioning part; 100, connecting part; 101, channel; 102, third cavity; 103, first through hole; 200, bracket; 201, second through hole; 202, first body; 203, second body; 204, third through hole; 205, second cavity; 300, sealing part; 301, third body; 302, fourth body; 303, fifth body; 400, freezer door body; 401, door frame; 402, fifth through hole; 403, mounting hole; 500, freezer. DETAILED DESCRIPTION
[0029] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.
[0030] In the description of the embodiments of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0031] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0032] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0033] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present embodiment. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.
[0034] The following will be described in combination with Figures 1-9 The refrigerator pressure balancing structure and the refrigerator provided by the embodiments of the present application are described.
[0035] As Figure 1 and Figure 2 shown, in the embodiments of the present application, the refrigerator pressure balancing structure comprises a connecting portion 100, a bracket 200 and a sealing member 300. The first end of the connecting portion 100 is arranged in the freezer door body 400 of the refrigerator, the second end of the connecting portion 100 extends to the outside of the freezer door body 400, the connecting portion 100 is provided with a first cavity, and the two ends of the first cavity are respectively communicated with the freezer 500 of the refrigerator and the outside of the refrigerator. The end face of the second end of the connecting portion 100 is provided with a first through hole 103, and the first through hole 103 is communicated with the first cavity. The bracket 200 and the sealing member 300 are both arranged in the first cavity and located outside the refrigerator, and the bracket 200 is connected with the connecting portion 100. The bracket 200 is provided with a second through hole 201, the second through hole 201 is communicated with the first cavity, the sealing member 300 is connected with the bracket 200, and the sealing member 300 can move relative to the bracket 200. The sealing member 300 has a switchable first position and a second position, in the case that the sealing member 300 is in the first position, the sealing member 300 abuts against the end face of the second end of the connecting portion 100 to block the first through hole 103, at this time, the first through hole 103 and the second through hole 201 are blocked from communication; in the case that the sealing member 300 is in the second position, the sealing member 300 is away from the end face of the connecting portion 100, and the first through hole 103 is communicated with the second through hole 201.
[0036] Specifically, in the present embodiment, the sealing member 300 can be switched between the first position and the second position under the action of the external air pressure and its own gravity, and it should be noted that whether the sealing member 300 is in the first position or the second position, it is always connected with the bracket 200. Specifically, as Figure 2 shown, Figure 2The dashed line with an arrow shown in the middle represents the flow direction of the air flow. When the refrigerator works to generate a large negative pressure, the sealing piece 300 moves upward relative to the support 200 under the action of the external air pressure, the sealing piece 300 is away from the second end of the connecting part 100, which is the second position of the sealing piece 300, the first through hole 103 is communicated with the second through hole 201, and the external air enters the freezing chamber 500 inside the refrigerator through the first through hole 103, the second through hole 201 and the first cavity.
[0037] As Figure 1 shown, when the pressure inside the freezing chamber 500 is equal to the pressure outside the freezing chamber 500, the sealing piece 300 moves downward relative to the support 200 by relying on its own gravity, the sealing piece 300 abuts against the end face of the second end of the connecting part 100, which is the first position of the sealing piece 300. The sealing piece 300 plugs the first through hole 103, so that the first through hole 103 and the second through hole 201 are no longer communicated, and a sealing structure is formed.
[0038] In an optional embodiment of the utility model, the connecting part 100 can be a whole structure, for example, the connecting part 100 is a pipeline.
[0039] In another optional embodiment of the utility model, the connecting part 100 can also be a combination of two components, for example, the connecting part 100 includes a first connecting piece and a second connecting piece, the first connecting piece is arranged in the freezing chamber door body 400, and the second connecting piece is arranged outside the freezing chamber door body 400. The first connecting piece and the second connecting piece are both provided with cavities, the cavities are communicated to form the first cavity, and the second connecting piece is provided with the first through hole 103.
[0040] In the embodiment, the support 200 is fixedly arranged in the first cavity, and when the sealing piece 300 is pushed upward by the external air pressure, the support 200 can remain stationary and will not move together with the sealing piece 300. The support 200 can be a ring-shaped piece with a bottom face, part of the outer wall of the ring-shaped piece is connected with the inner wall of the connecting part 100, the bottom face of the ring-shaped piece is provided with a through hole, the sealing piece 300 is inserted into the through hole and can move along the through hole. The side wall or the bottom face of the ring-shaped piece is provided with the second through hole 201, so that the second through hole 201 is communicated with the channel 101.
[0041] The refrigerator pressure balance structure provided by the embodiment of the utility model can make the sealing piece away from the first through hole under the action of the external air pressure when a large negative pressure is generated in the freezing chamber, realize the communication between the inside and the outside of the freezing chamber, and balance the pressure inside and outside the freezing chamber. After the pressure inside and outside the freezing chamber is balanced, the sealing piece can move downward by relying on the gravity to plug the first through hole and form a sealing structure. The sealing structure does not need to rely on the elastic deformation to adjust the pressure of the refrigerator, the service life of the sealing structure is improved while the sealing performance is ensured.
[0042] As Figure 3 And Figure 4 As shown in the embodiment of the utility model, the support 200 includes a first body 202, the first body 202 is equipped with a second cavity 205 and a second through hole 201, the first cavity, the second cavity 205 and the second through hole 201 are communicated. Part of the sealing element 300 is inserted into the second cavity 205.
[0043] Specifically, in the embodiment, the first body 202 can be in various forms, such as a ring-shaped member, the hollow through hole of the ring-shaped member is configured as the second cavity 205, part of the sealing element 300 is inserted into the second cavity 205 and can move along the second cavity 205. In the embodiment, the upper outer wall of the ring-shaped member is connected with the inner wall of the connecting portion 100, the second through hole 201 can be arranged on the lower wall surface of the ring-shaped member, and the second through hole 201 is communicated with the first cavity through the second cavity 205. In the embodiment, a certain gap should exist between the lower wall surface of the ring-shaped member and the inner wall of the connecting portion 100 to facilitate the flow of gas.
[0044] For another example, the first body 202 can also be a ring-shaped member with a bottom surface, the bottom surface is equipped with a through hole, and the sealing element 300 is inserted into the through hole and can move along the through hole. In the embodiment, the upper outer wall of the ring-shaped member is connected with the inner wall of the connecting portion 100, and the second through hole 201 can be arranged on the side wall or the bottom surface of the ring-shaped member. When the second through hole 201 is arranged on the bottom surface of the ring-shaped member, the lower wall surface of the ring-shaped member can also be connected with the inner wall of the connecting portion 100.
[0045] As Figure 4 As shown in the embodiment of the utility model, the support 200 further includes a second body 203, the second body 203 is connected with the first body 202, the diameter of the second body 203 is smaller than that of the first body 202, the second body 203 is equipped with a third through hole 204, the third through hole 204 is communicated with the second cavity 205, and part of the sealing element 300 is inserted into the third through hole 204.
[0046] Specifically, in the embodiment, the first body 202 and the second body 203 form a stepped structure, the sealing element 300 is connected with the end with smaller diameter of the stepped structure and can move along the third through hole 204. The second through hole 201 is arranged on the stepped surface between the first body 202 and the second body 203 and is located outside the second body 203. When the refrigerator pressure balance structure is installed on the refrigerator, the second through hole 201 is arranged on the surface where the first body 202 and the second body 203 are connected, which can ensure the flow of gas in the longitudinal direction. Alternatively, in the embodiment of the utility model, the number of the second through holes 201 is multiple, and the multiple second through holes 201 are arranged in a ring shape.
[0047] As Figure 4 And Figure 5As shown, in the embodiment of the utility model, the sealing element 300 comprises: a third body 301 and a fourth body 302. The third body 301 is inserted into the third through hole 204, the fourth body 302 is connected with the third body 301, and the diameter of the fourth body 302 is greater than the diameter of the third body 301. The fourth body 302 has a switchable first position and a second position. When the fourth body 302 is in the first position, the fourth body 302 has a spacing with the second body 203, and the fourth body 302 abuts against the second end of the connecting part 100. When the fourth body 302 is in the second position, the fourth body 302 abuts against the second body 203, and the fourth body 302 has a spacing with the second end of the connecting part 100.
[0048] Specifically, the third body 301 can move relative to the support 200 under the action of external air pressure or gravity. When the external air pressure of the freezing chamber 500 is greater than the internal air pressure, the third body 301 moves upward relative to the support 200 under the action of the external air pressure until the fourth body 302 abuts against the second body 203 of the support 200, which is the second position of the fourth body 302. At this time, the fourth body 302 has a certain spacing with the second end of the connecting part 100, so that the first through hole 103 and the second through hole 201 are communicated, and the external airflow can enter the inside of the freezing chamber 500. When the internal and external pressures of the freezing chamber 500 are equal, the third body 301 moves downward relative to the support 200 under the action of gravity, the fourth body 302 has a certain gap with the second body 203, and the fourth body 302 abuts against the end face of the connecting part 100, which is the second position of the fourth body 302. At this time, the fourth body 302 blocks the first through hole 103 to form a sealing structure.
[0049] In the embodiment, the third body 301 can be a cylindrical structure. In order to avoid that the displacement of the sealing element 300 is too large when the sealing element 300 moves downward, the sealing element 300 is separated from the support 200, the movement displacement of the sealing element 300 can be set according to the insertion length of the sealing element 300 and the support 200, that is, the length of the cavity between the top surface of the support 200 and the end face of the second end of the connecting part 100 is set as the height of the support 200 + the thickness of the fourth body 302 + the displacement amount, so that when the fourth body 302 abuts against the second end of the connecting part 100, the sealing element 300 is still connected with the support 200.
[0050] Further, the diameter of the fourth body 302 can be equal to or less than the diameter of the second body 203 of the support 200. In the embodiment of the utility model, in order to ensure that the appearance is beautiful when the fourth body 302 abuts against the second body 203, the diameter of the fourth body 302 is set to be equal to the diameter of the second body 203.
[0051] Optionally, in another embodiment of the utility model, the sealing piece 300 further includes a fifth body 303, the fifth body 303 is arranged between the third body 301 and the fourth body 302, and the diameter of the fifth body 303 is less than the diameter of the third body 301. When the sealing piece 300 moves downward under the action of gravity, the third body 301 can play a limiting role because the diameter of the third body 301 is greater than the diameter of the fifth body 303, and when the third body 301 is clamped with the third through hole 204, the fourth body 302 just abuts against the end face of the second end of the connecting part 100.
[0052] Further, as shown in Figure 5 The third body 301 is a conical structure, and the largest diameter of the third body 301 is connected with the fifth body 303. The third body 301 is arranged in a conical structure, which facilitates the sealing piece 300 to be arranged in the support 200.
[0053] As shown in Figure 6 In the embodiment of the utility model, the connecting part 100 includes a pre-embedded part 10 and a shell 20. The pre-embedded part 10 is arranged in the freezer door body 400, and the pre-embedded part 10 is provided with a channel 101. The shell 20 is arranged outside the freezer door body 400, and the shell 20 is detachably connected with the pre-embedded part 10. The shell 20 is provided with a third cavity 102, and the third cavity 102 is communicated with the channel 101 to form a first cavity of the connecting part 100. The end face of the shell 20 is provided with a first through hole 103.
[0054] Specifically, in the embodiment, the diameter of the third cavity 102 is greater than the diameter of the channel 101, and the support 200 and the sealing piece 300 are arranged in the third cavity 102. The outer wall of the support 200 is connected with the inner wall of the shell 20, the channel 101 is communicated with the second cavity 205 of the support 200, and the second through hole 201 is arranged on the surface where the first body 202 and the second body 203 of the support 200 are connected.
[0055] When the freezer door body 400 is manufactured, the pre-embedded part 10 can be pre-embedded in the freezer door body 400. After the freezer door body 400 is manufactured, the support 200 and the sealing piece 300 are arranged in the shell 20, and then the shell 20 is connected with the pre-embedded part 10. Further, in the embodiment, the support 200 and the sealing piece 300 can be connected as a whole, and then the whole is arranged in the shell 20. Alternatively, the support 200 can be in interference fit with the shell 20 to realize sealed connection therebetween, or the support 200 can be connected with the shell 20 through bolts. When the support 200 or the sealing piece 300 is damaged, the shell 20 can be disassembled to replace the support 200 or the sealing piece 300 in time.
[0056] As shown in Figure 6As shown, one end of the embedded part 10 extends outward to form a first protruding edge 30, and one end of the housing 20 extends outward to form a second protruding edge 40. The second protruding edge 40 is detachably connected to the first protruding edge 30.
[0057] Specifically, the first protruding edge 30 is attached to one side of the door frame 401 of the freezer door 400, and the second protruding edge 40 is attached to the other side of the door frame 401. Then, the second protruding edge 40, the door frame 401 and the first protruding edge 30 are connected by bolts.
[0058] Furthermore, the other end of the embedded part 10 extends outward to form a third protruding edge 50, which is used to connect with the inner lining plate of the freezer door 400.
[0059] like Figure 6 As shown in the embodiment of this utility model, the embedded part 10 has a bent portion. When the third protruding edge 50 of the embedded part 10 is connected to the inner liner plate, and the first protruding edge 30 is connected to the second protruding edge 40, the external airflow can flow longitudinally and directly push the sealing part 300 to move.
[0060] like Figure 8 As shown, the refrigerator pressure balance structure also includes a positioning component 60, which is located in the embedded component 10. When the embedded component 10 is embedded in the freezer door 400, the positioning component 60 abuts against the door frame 401 of the freezer door 400 to position the installation position of the embedded component 10.
[0061] like Figure 7 and Figure 9 As shown, this embodiment of the present invention also provides a refrigerator, including: a freezer door 400 and a refrigerator pressure balancing structure. The freezer door 400 includes: a door frame 401 and a door liner. The door liner is disposed within the door frame 401, and the door liner has a fourth through hole, while the door frame 401 has a fifth through hole 402. The connecting part 100 of the refrigerator pressure balancing structure is disposed within the door liner, the channel 101 of the connecting part 100 communicates with the fourth through hole, and the connecting part 100 passes through the fifth through hole 402.
[0062] Specifically, the refrigerator pressure balancing structure includes a connecting part 100, a bracket 200, and a sealing element 300. The first end of the connecting part 100 is disposed within the freezer door 400 of the refrigerator, and the second end of the connecting part 100 extends outside the freezer door 400. The connecting part 100 has a first cavity, the two ends of which communicate with the freezer compartment 500 and the outside of the refrigerator, respectively. The end face of the second end of the connecting part 100 has a first through hole 103, which communicates with the first cavity. The bracket 200 and the sealing element 300 are both disposed within the first cavity and located outside the refrigerator. The bracket 200 has a second through hole 201, which communicates with the first cavity. The sealing element 300 is connected to the bracket 200 and is movable relative to the bracket 200. The seal 300 has a switchable first position and a second position. When the seal 300 is in the first position, the seal 300 abuts against the end face of the second end of the connecting part 100 to block the first through hole 103. At this time, the first through hole 103 and the second through hole 201 are blocked from communicating. When the seal 300 is in the second position, the seal 300 is away from the end face of the connecting part 100, and the first through hole 103 and the second through hole 201 communicate.
[0063] The door liner includes a panel, a heat insulation plate, and an inner lining plate arranged sequentially from the outside to the inside. The inner lining plate has a fourth through hole. A portion of the connecting part 100 is embedded in the heat insulation plate, and the connecting part 100 communicates with the fourth through hole. The remaining portion of the connecting part 100 extends through the fifth through hole 402 to the outside of the freezer door 400.
[0064] In this embodiment, the sealing element 300 can switch between a first position and a second position under the action of external air pressure and its own gravity. It should be noted that regardless of whether the sealing element 300 is in the first or second position, it is always connected to the bracket 200. Specifically, as... Figure 2 As shown, Figure 2 The dashed lines with arrows shown indicate the direction of airflow. When the refrigerator generates a large negative pressure during operation, the seal 300 moves upward relative to the bracket 200 under the action of external air pressure. The second end of the seal 300 moves away from the connecting part 100, which is the second position of the seal 300. This causes the first through hole 103 to connect with the second through hole 201, and external gas enters the interior of the freezer compartment 500 of the refrigerator through the first through hole 103, the second through hole 201, and the first cavity.
[0065] like Figure 1As shown, when the pressure inside the freezing chamber 500 is equal to the pressure outside the freezing chamber 500, the sealing piece 300 moves downward relative to the support 200 by its own gravity, and the sealing piece 300 abuts against the end face of the second end of the connecting part 100, which is the first position of the sealing piece 300. The sealing piece 300 blocks the first through hole 103, so that the first through hole 103 and the second through hole 201 are no longer in communication, forming a sealed structure.
[0066] Further, when the connecting part 100 comprises the embedded part 10 and the shell 20, the embedded part 10 is embedded in the heat insulation layer of the door liner, and the third protruding edge 50 of the embedded part 10 is located on both sides of the fourth through hole, so that the fourth through hole is in communication with the channel 101 of the embedded part 10. The first protruding edge 30 of the embedded part 10 is located on both sides of the fifth through hole 402 of the door frame 401, so that the channel 101 is in communication with the fifth through hole 402. The second protruding edge 40 of the shell 20 is located on the other side of the door frame 401 and opposite to the first protruding edge 30, so that the third cavity 102 of the shell 20 is in communication with the fifth through hole 402. As shown, Figure 9 As shown, both sides of the fifth through hole 402 are also provided with a pair of mounting holes 403, and the bolts are arranged through the second protruding edge 40, the mounting holes 403 and the first protruding edge 30, so as to connect the shell 20, the embedded part 10 and the door frame 401.
[0067] The refrigerator provided by the embodiment of the utility model can automatically adjust the pressure inside the freezing chamber of the refrigerator by arranging the refrigerator pressure balancing structure, and the refrigerator pressure balancing structure does not need to rely on elastic deformation to adjust the pressure of the refrigerator, so that the service life of the sealing structure is improved while the sealing performance is ensured.
[0068] Further, in the embodiment of the utility model, part of the refrigerator pressure balancing structure is arranged outside the freezing chamber door body 400, in order to improve the appearance of the refrigerator, the length of the panel can be extended to below the door frame 401 when the panel is made, so as to shield the refrigerator pressure balancing structure and improve the appearance of the refrigerator.
[0069] Finally, it should be noted that the above embodiments are only used to illustrate the utility model, and are not limited to the utility model. Although the utility model is described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical scheme of the utility model do not deviate from the spirit and scope of the utility model, and should be covered in the scope of the claims of the utility model.
Claims
1. A refrigerator pressure equalization structure, characterized by, The utility model relates to a refrigerator door handle sealing device, which comprises: a connecting part (100), a first end of the connecting part (100) is arranged in a freezer door body (400) of a refrigerator, a second end of the connecting part (100) extends to outside the freezer door body (400), the connecting part (100) is provided with a first cavity, both ends of the first cavity are communicated with a freezer (500) of the refrigerator and outside the refrigerator respectively, an end face of the second end of the connecting part (100) is provided with a first through hole (103), the first through hole (103) is communicated with the first cavity; a support (200) arranged in the first cavity and connected with the connecting part (100), the support (200) is located outside the refrigerator, the support (200) is provided with a second through hole (201), the second through hole (201) is communicated with the first cavity; a sealing element (300) arranged in the first cavity, the sealing element (300) is movably connected with the support (200); the sealing element (300) has a switchable first position and a second position, in the case that the sealing element (300) is in the first position, the first through hole (103) and the second through hole (201) are blocked from communication, in the case that the sealing element (300) is in the second position, the first through hole (103) and the second through hole (201) are communicated.
2. The refrigerator pressure equalizing structure according to claim 1, characterized in that, the support (200) comprises: a first body (202), at least part of the first body (202) is connected with the connecting part (100), the first body (202) is provided with a second cavity (205) and the second through hole (201), the first cavity, the second cavity (205) and the second through hole (201) are communicated, part of the sealing element (300) is inserted into the second cavity (205). 3.The refrigerator pressure equalization structure of claim 2, wherein the support (200) further comprises: a second body (203), the second body (203) is connected with the first body (202), the diameter of the second body (203) is smaller than that of the first body (202), the second body (203) is provided with a third through hole (204), the third through hole (204) is communicated with the second cavity (205), part of the sealing element (300) is inserted into the third through hole (204). 4.The refrigerator pressure equalization structure according to claim 3, characterized by, a stepped surface between the first body (202) and the second body (203) is provided with the second through hole (201), and the second through hole (201) is located outside the second body (203). 5.The refrigerator pressure equalizing structure according to claim 3, characterized by, the sealing element (300) comprises: a third body (301) inserted into the third through hole (204); a fourth body (302) connected with the third body (301), the diameter of the fourth body (302) is greater than that of the third body (301). The fourth body (302) has switchable first and second positions, in the case of the fourth body (302) being in the first position, the fourth body (302) has a spacing with the second body (203), the fourth body (302) abuts the second end of the connecting part (100), in the case of the fourth body (302) being in the second position, the fourth body (302) abuts the second body (203), the fourth body (302) has a spacing with the second end of the connecting part (100). 6.The refrigerator pressure equalization structure according to claim 5, characterized by, The sealing piece (300) further comprises a fifth body (303) arranged between the third body (301) and the fourth body (302), the diameter of the fifth body (303) is smaller than the diameter of the third body (301).
7. The refrigerator pressure equalizing structure according to claim 1, characterized in that, The connecting part (100) comprises: The embedded part (10) is arranged in the freezer compartment door body (400) of the refrigerator, and the embedded part (10) is provided with a passage (101); The shell (20) is arranged outside the freezer compartment door body (400), and the shell (20) is detachably connected with the embedded part (10), the shell (20) is provided with a third cavity (102) and the first through hole (103), the third cavity (102) communicates with the passage (101), the third cavity (102) and the passage (101) are configured as the first cavity, the bracket (200) and the sealing piece (300) are arranged in the shell (20), and the bracket (200) is connected with the shell (20). 8.The refrigerator pressure equalizing structure according to claim 7, characterized by, One end of the embedded part (10) is provided with a first protruding edge (30); One end of the shell (20) is provided with a second protruding edge (40), and the second protruding edge (40) is detachably connected with the first protruding edge (30). 9.The refrigerator pressure equalizing structure according to claim 7, characterized by, Further comprising a positioning piece (60), the positioning piece (60) is arranged on the embedded part (10), and the positioning piece (60) is used for abutting with a door frame (401) of the freezer compartment door body (400).
10. A refrigerator characterized by comprising: Comprise: The freezer compartment door body (400) comprises a door frame (401) and a door barrel, the door barrel is arranged in the door frame (401), the door barrel is provided with a fourth through hole, and the door frame (401) is provided with a fifth through hole (402); The refrigerator pressure balance structure of any one of claims 1-9, the connecting part (100) of the refrigerator pressure balance structure is arranged in the door barrel, the first cavity of the connecting part (100) communicates with the fourth through hole, and the connecting part (100) is arranged in the fifth through hole (402).