Bidirectional air pressure balance valve for aviation container and aviation container

Abstract

The invention relates to the technical field of air transportation, and discloses a two-way air pressure balance valve for an aviation container, and the aviation container comprises a box body and the two-way air pressure balance valve arranged on the box body. Under the condition that air pressure difference exists between the outside and the inside, outside air can flow into the box body through the two-way air pressure balance valve to increase the air pressure in the box body, or the air pressure in the box can flow out of the box body through the two-way air pressure balance valve to reduce the air pressure in the box body. According to the arrangement, balance of air pressure inside and outside the container body can be achieved only by forming one installation opening in the container body to install one air pressure valve, the risk of cold leakage and air leakage of the aviation container is reduced, and potential safety hazards are avoided. Meanwhile, the invention further discloses the aviation container.

Description

Technical Field

[0001] The present application relates to the field of aviation transportation technology, for example, to a two-way air pressure balancing valve for an aviation container and the aviation container. Background Art

[0002] Airline containers are storage containers designed specifically for air transport. They must be customized to the shape and aerodynamic characteristics of an aircraft's cargo hold to ensure maximum loading efficiency within the limited cargo space. Temperature-controlled or airtight air containers typically consist of a sealed space consisting of a roof, floor, side panels, and door panels. During air transport, external air pressure fluctuates significantly due to flight altitude and temperature. A pressure differential between the internal and external air container pressures poses a safety hazard. Therefore, balancing the internal and external air container pressures is a major research topic in the air transport field.

[0003] In the prior art, to balance the air pressure inside and outside an air container during transport, two one-way valves are typically installed inside the container, with the airflow directions of the two valves opposite. This way, if the external air pressure is high, one valve can increase the air pressure inside the container; if the external air pressure is high, the other valve can decrease the air pressure inside the container.

[0004] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0005] In the related art, existing aviation containers that use two one-way valves for air pressure balance generally require two installation ports to be opened on the box body to install the two one-way valves respectively. This will cause the aviation container to have a more serious risk of cold leakage and air leakage, and there is still a safety hazard.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Summary of the Invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The disclosed embodiments provide a two-way pressure balancing valve for an air container and the air container. The air container includes a container body and a two-way pressure balancing valve disposed within the container body. When there is a pressure difference between the outside and inside air, outside air can flow into the container body through the two-way pressure balancing valve to increase the pressure within the container, or the pressure within the container can flow out of the container body through the two-way pressure balancing valve to reduce the pressure within the container. This arrangement allows for balanced air pressure inside and outside the container body by simply opening a mounting port in the container body to install a pressure valve, reducing the risk of cold and air leaks in the air container and avoiding potential safety hazards.

[0009] The embodiment of the present disclosure provides a bidirectional air pressure balancing valve for an air container, comprising: a valve body, a first valve cover, a first elastic member, a second valve cover, and a second elastic member. The valve body is installed in the air container, and the valve body is provided with a vent; the first valve cover is provided on one side of the vent, and the first valve cover is provided with a bypass port, and the first valve cover can move in a direction close to or away from the valve body to block or clear the vent; the first elastic member is respectively connected to the first valve cover and the valve body, and the first elastic member is used to drive the first valve cover to move in a direction close to the valve body; the second valve cover is provided in a position corresponding to the bypass port in the vent, and the second valve cover can move in a direction close to or away from the first valve cover to block or clear the bypass port; the second elastic member is respectively connected to the first valve cover and the second valve cover, and the second elastic member is used to drive the second valve cover to move in a direction close to the first valve cover; wherein the size of the second valve cover is smaller than the size of the vent and larger than the size of the bypass port.

[0010] In some embodiments, the second valve cover is provided with a pressure relief portion, which is protruded toward the avoidance port; wherein the pressure relief portion is used to press the second valve cover to separate the second valve cover from the first valve cover.

[0011] In some embodiments, the valve body is provided with a first abutment portion; the bidirectional air pressure balancing valve further comprises a support assembly, the support assembly being securely connected to the first valve cover and provided with a second abutment portion, the second abutment portion being located on a side of the first abutment portion facing away from the first valve cover; wherein both ends of the first elastic member abut against the first abutment portion and the second abutment portion, respectively.

[0012] In some embodiments, the support assembly includes: a bracket and a support stud. The bracket is disposed in the vent and is fastened to the first valve cover. The support stud is connected to the bracket, and the second abutment portion is disposed on the support stud.

[0013] In some embodiments, a support column is provided on the side of the second valve cover facing the bracket, the second elastic member is sleeved on the support column, and two ends of the second elastic member are respectively in contact with the inner wall surface of the second valve cover and the bracket.

[0014] In some embodiments, the bracket and the support stud are correspondingly provided with threaded structures, and the support stud is connected to the bracket via the threaded structure; wherein the support stud can rotate circumferentially to increase or decrease the distance between the second abutting portion and the bracket.

[0015] In some embodiments, the bidirectional air pressure balancing valve further comprises: breathable thermal insulation cotton, which is arranged in the vent, and the peripheral side wall of the breathable thermal insulation cotton abuts against the inner side wall of the vent.

[0016] In some embodiments, a sealing member is provided on the contact surface between the first valve cover and the valve body; and a sealing member is provided on the contact surface between the second valve cover and the first valve cover.

[0017] The disclosed embodiments further provide an air container comprising: a container body and the aforementioned two-way air pressure balancing valve for an air container. The container body has a mounting opening; the two-way air pressure balancing valve is mounted at the mounting opening; and a sealing member is provided on the contact surface between the two-way air pressure balancing valve and the mounting opening.

[0018] In some embodiments, when the air pressure inside the box is greater than the external air pressure and the pressure difference is greater than or equal to a first threshold value, the first valve cover overcomes the elastic force of the first elastic member and moves away from the valve body; when the air pressure inside the box is less than the external air pressure and the pressure difference is greater than or equal to a second threshold value, the second valve body overcomes the elastic force of the second elastic member and moves away from the first valve body; wherein the first threshold value and the second threshold value may be the same or different.

[0019] The embodiments of the present disclosure provide a bidirectional air pressure balancing valve for an air container and an air container, which can achieve the following technical effects:

[0020] The embodiment of the present disclosure provides a bidirectional air pressure balancing valve for an air container, comprising: a valve body, a first valve cover, a first elastic member, a second valve cover, and a second elastic member. The valve body is installed in the air container, and the valve body is provided with a vent; the first valve cover is provided on one side of the vent, and the first valve cover is provided with a bypass port, and the first valve cover can move in a direction close to or away from the valve body to block or clear the vent; the first elastic member is respectively connected to the first valve cover and the valve body, and the first elastic member is used to drive the first valve cover to move in a direction close to the valve body; the second valve cover is provided in a position corresponding to the bypass port in the vent, and the second valve cover can move in a direction close to or away from the first valve cover to block or clear the bypass port; the second elastic member is respectively connected to the first valve cover and the second valve cover, and the second elastic member is used to drive the second valve cover to move in a direction close to the first valve cover; wherein the size of the second valve cover is smaller than the size of the vent and larger than the size of the bypass port. In this way, when the air pressure inside the container is greater than the external pressure, the internal pressure simultaneously pushes the first and second valve covers outward, allowing the air inside the container to flow out through the gap between the first valve cover and the valve body. When the external pressure is greater than the internal pressure, the external pressure pushes the second valve cover inward, allowing the external pressure to flow into the container through the gap between the second and first valve covers. This arrangement allows the internal and external pressures of the container to be balanced by simply opening a mounting hole in the container body to install a pressure valve, reducing the risk of cold and air leaks in the air container and avoiding safety hazards.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0023] Figure 1 This is a schematic diagram of the structure of a two-way air pressure balancing valve provided by an embodiment of the present disclosure installed in an air container;

[0024] Figure 2 1 is a schematic structural diagram of a bidirectional air pressure balancing valve provided by an embodiment of the present disclosure;

[0025] Figure 3 is an exploded view of a bidirectional air pressure balancing valve provided by an embodiment of the present disclosure;

[0026] Figure 4 This is a structural schematic diagram of a support assembly provided by an embodiment of the present disclosure installed on a first valve cover;

[0027] Figure 5is a structural schematic diagram of a second valve cover provided in an embodiment of the present disclosure;

[0028] Figure 6 is a cross-sectional view of a bidirectional air pressure balancing valve provided by an embodiment of the present disclosure;

[0029] Figure 7 This is a schematic diagram of air flow in a box where the air pressure inside is greater than the external air pressure, provided by an embodiment of the present disclosure;

[0030] Figure 8 This is a schematic diagram of air flow provided by an embodiment of the present disclosure when the external air pressure is greater than the air pressure inside the box.

[0031] Reference numerals:

[0032] 11: Box body; 12: Two-way air pressure balance valve;

[0033] 21: valve body; 211: vent; 212: first abutting portion; 213: first connecting rib; 22: first valve cover; 221: escape port; 23: second valve cover; 231: pressure relief portion; 232: support column;

[0034] 30: support assembly; 31: bracket; 311: second connecting rib; 32: support stud; 321: second abutment portion;

[0035] 41: first elastic member; 42: second elastic member; 43: breathable thermal insulation cotton. DETAILED DESCRIPTION

[0036] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0037] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0038] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0039] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0040] Unless otherwise stated, the term "plurality" means two or more.

[0041] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0042] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0043] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0044] like Figures 1 to 8 As shown, an embodiment of the present disclosure provides a two-way pressure balancing valve 12 for an air container and an air container. The air container includes a container body 11 and a two-way pressure balancing valve 12 disposed within the container body 11. When there is a pressure difference between the outside and inside air, outside air can flow into the container body 11 through the two-way pressure balancing valve 12 to increase the air pressure within the container, or the air pressure within the container can flow out of the container body 11 through the two-way pressure balancing valve 12 to reduce the air pressure within the container. With this arrangement, only one mounting port in the container body 11 is required to install a pressure valve to achieve pressure balance between the inside and outside of the container body 11, reducing the risk of cold and air leaks in the air container and avoiding safety hazards.

[0045] like Figures 1 to 8As shown, the embodiment of the present disclosure provides a two-way air pressure balancing valve 12 for an air container, comprising: a valve body 21, a first valve cover 22, a first elastic member 41, a second valve cover 23, and a second elastic member 42. The valve body 21 is installed on the air container, and the valve body 21 is provided with a vent 211; the first valve cover 22 is provided on one side of the vent 211, and the first valve cover 22 is provided with a avoidance opening 221, and the first valve cover 22 can move in a direction close to or away from the valve body 21 to block or clear the vent 211; the first elastic member 41 is respectively connected to the first valve cover 22 and the valve body 21, and the first elastic member 41 is used to drive the first valve cover 22 to move in a direction close to the valve body 21; the second valve cover 2 The second valve cover 23 is disposed in a position corresponding to the avoidance opening 221 within the vent 211, and the second valve cover 23 can move toward or away from the first valve cover 22 to block or clear the avoidance opening 221. The second elastic member 42 is connected to the first valve cover 22 and the second valve cover 23, respectively, and is used to drive the second valve cover 23 to move toward the first valve cover 22. The size of the second valve cover 23 is smaller than that of the vent 211 and larger than that of the avoidance opening 221.

[0046] Specifically, the air container includes a housing 11, which is provided with an installation opening for installing a two-way air pressure balancing valve 12. A vent 211 is provided at the axis of the valve body 21, and the vent 211 is provided through the valve body 21, so that the interior of the housing 11 is connected to the outside world through the vent 211. A first valve cover 22 is snapped onto the outside of the vent 211 and is movably connected to the valve body 21 so that the first valve cover 22 can move along the axis of the vent 211 toward or away from the valve body 21. The size of the first valve cover 22 is larger than the size of the vent 211, so that the first valve cover 22 can block the vent 211 when it abuts the valve body 21. A first elastic member 41 is used to elastically connect the first valve cover 22 to the valve body 21, and the first elastic member 41 can drive the first valve cover 22 to move toward the valve body 21 and abut the valve body 21. The second valve cover 23 is disposed within the vent 211 and is arranged corresponding to the avoidance opening 221 of the first valve cover 22. The second valve cover 23 is movably connected to the first valve cover 22 or the valve body 21, so that the second valve cover 23 can move along the axis of the avoidance opening 221 toward or away from the first valve cover 22. The size of the second valve cover 23 is larger than the size of the avoidance opening 221, so that the second valve cover 23 can block the avoidance opening 221 when it abuts the first valve cover 22. The second elastic member 42 is used to elastically connect the second valve cover 23 to the first valve cover 22 or the valve body 21, and the second elastic member 42 can drive the second valve cover 23 to move toward the first valve cover 22 and abut against the first valve cover 22.

[0047] When the pressure difference between the inside and outside of the box body 11 is small, the first valve cover 22 abuts against the valve body 21 under the action of the first elastic member 41 and blocks the vent 211, and the second valve cover 23 abuts against the first valve cover 22 under the action of the second elastic member 42 and blocks the avoidance opening 221, so that the box body 11 is in a sealed state, thereby avoiding the phenomenon of cold leakage or air leakage. Figure 6 When the air pressure inside the box 11 is greater than the external air pressure, the air inside the box 11 pushes the first valve cover 22 and the second valve cover 23 outward, so that the first valve cover 22 overcomes the force of the first elastic member 41 and separates from the valve body 21. At this time, the air inside the box 11 flows through the vent 211 and the gap between the first valve cover 22 and the valve body 21 in sequence and flows out to the outside, so that the air pressure inside and outside the box 11 is balanced, as shown in FIG. Figure 7 When the external air pressure is greater than the internal air pressure of the box body 11, the external air pressure pushes the second valve cover 23 inward, so that the second valve cover 23 overcomes the force of the second elastic member 42 and separates from the first valve cover 22. At this time, the external air flows through the avoidance port 221, the gap between the first valve cover 22 and the second valve cover 23, and the vent 211 in sequence and flows into the box body 11, so as to achieve the balance of air pressure inside and outside the box body 11. Figure 8 With this arrangement, it is only necessary to open an installation port in the box body 11 to install an air pressure valve to achieve a balance of air pressure inside and outside the box body 11, thereby reducing the risk of cold and air leakage in the air container and avoiding potential safety hazards.

[0048] In this application, inward refers to a direction toward the inside of the box body 11 , and outward refers to a direction away from the box body 11 .

[0049] Optionally, a valve cover protrusion is provided on the side wall of the first valve cover 22 facing the valve body 21. The valve cover protrusion is smaller than the vent 211 and extends into the vent 211. In this way, when the first valve cover 22 moves, the side wall of the vent 211 can limit the valve cover protrusion, allowing the first valve cover 22 to move along the axis of the vent 211. Furthermore, when the first valve cover 22 is separated from the valve body 21, a gap exists between the valve cover protrusion and the side wall of the vent 211, allowing the air pressure in the box to flow out of the box body 11 through this gap.

[0050] Optionally, the valve cover protrusion is configured to be annular, and the inner diameter of the valve cover protrusion is larger than the diameters of the avoidance opening 221 and the second valve cover 23 to prevent the valve cover protrusion from interfering with the movement of the second valve cover 23 .

[0051] like Figures 1 to 5 As shown, in some embodiments, the second valve cover 23 is provided with a pressure relief portion 231 , which is protruded toward the avoidance opening 221 ; wherein the pressure relief portion 231 is used to press the second valve cover 23 to separate the second valve cover 23 from the first valve cover 22 .

[0052] Specifically, a pressure relief portion 231 is provided at a position on the second valve cover 23 corresponding to the escape opening 221. The pressure relief portion 231 protrudes into the escape opening 221, and its diameter is smaller than that of the escape opening 221. Thus, a user can press the pressure relief portion 231, causing the second valve cover 23 to overcome the elastic force of the second elastic member 42 and move inward, separating from the first valve body 21. At this point, the outside world is connected to the interior of the housing 11 through the gap between the escape opening 221 and the pressure relief portion 231, the gap between the first and second valve covers 22 and 23, and the vent 211. With this arrangement, if the pressure differential between the inside and outside of the housing 11 fails to force the first and second valve covers 22 and 23 to overcome the elastic force of the first and second elastic members 41 and 42, the user can manually press the second valve cover 23 to connect the inside of the housing 11 with the outside world, thereby balancing the air pressure inside and outside the housing 11.

[0053] Optionally, the height of the pressure relief portion 231 is greater than or equal to the thickness of the avoidance opening 221, so that the pressure relief portion 231 protrudes from the first valve cover 22 or is flush with the outer wall of the first valve cover 22. This configuration makes it easier for users to press the pressure relief portion 231.

[0054] like Figures 1 to 5 As shown, in some embodiments, the valve body 21 is provided with a first abutting portion 212. The bidirectional air pressure balancing valve 12 further includes a support assembly 30. The support assembly 30 is fastened to the first valve cover 22 and provided with a second abutting portion 321. The second abutting portion 321 is located on a side of the first abutting portion 212 facing away from the first valve cover 22. The first elastic member 41 has two ends abutting the first abutting portion 212 and the second abutting portion 321, respectively.

[0055] Specifically, the first abutment portion 212 is located within the vent 211 of the valve body 21 and is connected to the inner wall of the vent 211 via a first connecting rib 213. The support assembly 30 is fixedly mounted on the side of the first valve cover 22 facing the valve body 21 using fasteners such as screws or bolts, and the second abutment portion 321 of the support assembly 30 is located on the side of the first abutment portion 212 facing away from the first valve cover 22. The first elastic member 41 is located between the first abutment portion 212 and the second abutment portion 321, with both ends of the first elastic member 41 respectively connected to the first abutment portion 212 and the second abutment portion 321. In this way, the first elastic member 41 can push the first valve cover 22 toward the valve body 21 through the support assembly 30.

[0056] like Figures 1 to 5 As shown, in some embodiments, the support assembly 30 includes a bracket 31 and a support stud 32. The bracket 31 is disposed in the vent 211 and is securely connected to the first valve cover 22. The support stud 32 is connected to the bracket 31, and the second abutment portion 321 is disposed on the support stud 32.

[0057] Specifically, the bracket 31 has a threaded structure on one end facing the support stud 32. The bracket 31 is positioned between the first abutment portion 212 and the first valve cover 22. Multiple second connecting ribs 311 are provided around the bracket 31, extending away from the screw holes. The length of the second connecting ribs 311 is greater than or equal to the radius of the second valve cover 23, and the end of the second connecting rib 311 facing away from the screw holes is fixedly connected to the first valve cover 22 via fasteners. The first end of the support stud 32 has a screw hole and is threadedly connected to the bracket 31. The second end of the support stud 32 extends away from the bracket 31 to the other side of the first abutment portion 212. The second end of the support stud 32 has a protrusion formed on it, forming a second abutment portion 321. In this way, when the pressure difference between the inside and outside of the housing 11 is small, the first elastic member 41 pushes the support stud 32 inward, thereby driving the first valve cover 22 within the housing 11 through the bracket 31.

[0058] like Figures 1 to 5 As shown, optionally, the first abutting portion 212 is configured as an annular structure, and the inner diameter of the first abutting portion 212 is larger than the diameter of the support stud 32, so that the support stud 32 can be disposed through the first abutting portion 212. The first end of the first connecting rib 213 is connected to the outer wall of the first abutting portion 212, and the other end of the first connecting rib 213 is connected to the inner wall of the vent 211, so that the first abutting portion 212 is located at the axis of the vent 211. The first end of the support stud 32 can pass through the first abutting portion 212 from the side of the first abutting portion 212 facing away from the first valve cover 22 and connect to the bracket 31. The first elastic member 41 is sleeved around the support stud 32 and is located between the first abutting portion 212 and the second abutting portion 321, thereby elastically connecting the support stud 32 to the valve body 21. The diameter of the second abutting portion 321 is larger than or equal to the diameter of the first abutting portion 212 to prevent the second abutting portion 321 from passing through the first abutting portion 212.

[0059] like Figures 1 to 5 As shown, in some embodiments, a support column 232 is provided on the side of the second valve cover 23 facing the bracket 31, the second elastic member 42 is sleeved on the support column 232, and the two ends of the second elastic member 42 are respectively in contact with the inner wall surface of the second valve cover 23 and the bracket 31.

[0060] Specifically, the support column 232 is arranged on the side wall of the second valve cover 23 facing the bracket 31, and is arranged at a position corresponding to the bracket 31. A through hole is provided in the middle of the bracket 31, and the support column 232 is inserted into the through hole of the bracket 31, and the support column 232 can reciprocate along the through hole. The second elastic member 42 is sleeved on the support column 232 and is located between the second valve cover 23 and the bracket 31, so that the second valve cover 23 is elastically connected to the bracket 31, and then the second valve cover 23 is elastically connected to the first valve cover 22. In this way, when the air pressure difference between the inside and outside of the box body 11 is small, the second elastic member 42 pushes the second valve cover 23 to move in the direction away from the bracket 31, that is, pushes the second valve cover 23 to move toward the first valve cover 22.

[0061] like Figures 1 to 5 As shown, in some embodiments, the bracket 31 and the support stud 32 are correspondingly provided with threaded structures, and the support stud 32 is connected to the bracket 31 through the threaded structure; wherein, the support stud 32 can rotate circumferentially to increase or decrease the distance between the second abutting portion 321 and the bracket 31.

[0062] Specifically, the bracket 31 has a threaded structure on one end facing the support stud 32. The threaded structure is provided on the outer wall of the bracket 31, and a screw hole is provided on the end of the support stud 32 facing the bracket 31, thereby achieving a threaded connection between the bracket 31 and the support stud 32. In this way, by rotating the support stud 32 or the bracket 31, the distance between the first abutment portion 212 and the second abutment portion 321 can be adjusted, thereby adjusting the air pressure required to move the first valve body 21. This arrangement not only facilitates installation but also improves the versatility of the two-way air pressure balancing valve 12.

[0063] like Figures 1 to 6 As shown, in some embodiments, the two-way air pressure balancing valve 12 further includes: breathable heat-insulating cotton 43. The breathable heat-insulating cotton 43 is disposed in the vent 211, and the peripheral side wall of the breathable heat-insulating cotton 43 abuts against the inner side wall of the vent 211.

[0064] Specifically, breathable insulation 43 is embedded within the vent 211. The shape of the insulation 43 corresponds to the vent 211, and the insulation 43 forms an interference fit with the inner wall of the vent 211. For example, if the vent 211 is cylindrical, the insulation 43 would be a cylinder with a larger diameter than the vent 211, and the insulation 43 should be elastic. This arrangement ensures the air container's thermal insulation performance while ensuring air circulation within the bidirectional pressure balancing valve 12, further reducing cold leakage from the air container.

[0065] In some embodiments, a sealing member is provided on the contact surface between the first valve cover 22 and the valve body 21 ; and a sealing member is provided on the contact surface between the second valve cover 23 and the first valve cover 22 .

[0066] Specifically, the contact surface between the first valve cover 22 and the valve body 21 is equipped with a sealing member, such as a rubber ring, to prevent a gap between the first valve cover 22 and the valve body 21 when the first valve cover 22 abuts the valve body 21. The contact surface between the second valve cover 23 and the first valve cover 22 is also equipped with a sealing member, such as a rubber ring, to prevent a gap between the second valve cover 23 and the first valve cover 22 when the second valve cover 23 abuts the first valve cover 22. This arrangement further prevents cold or air leakage in the air container.

[0067] like Figures 1 to 8 As shown, an embodiment of the present disclosure further provides an air container comprising: a container body 11 and the aforementioned two-way air pressure balancing valve 12 for an air container. The container body 11 defines an installation opening; the two-way air pressure balancing valve 12 is installed at the installation opening; a sealing member is provided on the contact surface between the two-way air pressure balancing valve 12 and the installation opening.

[0068] Specifically, the box body 11 is constructed by enclosing side panels, a back panel, a top panel, a bottom panel, and a door panel. The side panels or door panels are provided with mounting openings, and the two-way air pressure balancing valve 12 is mounted in the mounting openings. The contact surface between the two-way air pressure balancing valve 12 and the mounting openings is provided with a sealing member such as a sealing rubber ring, thereby configuring the interior of the box body 11 as a sealed space. An air container using the two-way air pressure balancing valve 12 for an air container provided in this application only requires opening a mounting opening in the box body 11 for installing a pressure valve to achieve pressure balance inside and outside the box body 11, thereby reducing the risk of cold and air leaks in the air container and avoiding safety hazards.

[0069] In some embodiments, when the air pressure inside the box body 11 is greater than the external air pressure and the pressure difference is greater than or equal to a first threshold value, the first valve cover 22 overcomes the elastic force of the first elastic member 41 and moves in a direction away from the valve body 21; when the air pressure inside the box body 11 is less than the external air pressure and the pressure difference is greater than or equal to a second threshold value, the second valve body 21 overcomes the elastic force of the second elastic member 42 and moves in a direction away from the first valve body 21; wherein the first threshold value and the second threshold value may be the same or different.

[0070] Specifically, the elastic force of the first elastic member 41 is a first threshold value. When the air pressure inside the housing 11 is greater than the external air pressure and the pressure differential is greater than or equal to the first threshold value, the airflow inside the housing can push the first valve cover 22 to overcome the elastic force of the first elastic member 41 and move away from the valve body 21. The elastic force of the second elastic member 42 is a second threshold value. When the external air pressure is greater than the air pressure inside the housing 11 and the pressure differential is greater than or equal to the second threshold value, the external airflow can push the second valve cover 23 to overcome the elastic force of the second elastic member 42 and move into the vent 211. The first and second threshold values ​​can be set by the user according to actual needs. The first threshold value can be greater than, equal to, or less than the second threshold value.

[0071] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A two-way air pressure balancing valve for air containers, characterized in that: include: A valve body is installed on the aviation container, and the valve body is provided with a vent; a first valve cover, disposed on one side of the vent, the first valve cover being provided with an escape opening, and the first valve cover being movable toward or away from the valve body to block or clear the vent; a first elastic member, connected to the first valve cover and the valve body, respectively, and configured to drive the first valve cover to move toward the valve body; a second valve cover, disposed in the vent at a position corresponding to the avoidance opening, and the second valve cover can move toward or away from the first valve cover to block or clear the avoidance opening; and, a second elastic member connected to the first valve cover and the second valve cover, respectively, and the second elastic member is used to drive the second valve cover to move toward the first valve cover; Wherein, the size of the second valve cover is smaller than the size of the vent, and larger than the size of the avoidance opening.

2. The two-way air pressure balancing valve according to claim 1, characterized in that: The second valve cover is provided with a pressure relief portion, and the pressure relief portion is provided to protrude toward the avoidance port; The pressure release portion is used to press the second valve cover to separate the second valve cover from the first valve cover.

3. The two-way air pressure balancing valve according to claim 1, characterized in that: The valve body is provided with a first abutment portion; The two-way air pressure balancing valve further includes: a support assembly, which is fastened to the first valve cover, and the support assembly is provided with a second abutting portion, and the second abutting portion is located on a side of the first abutting portion away from the first valve cover; Wherein, two ends of the first elastic member abut against the first abutting portion and the second abutting portion respectively.

4. The two-way air pressure balancing valve according to claim 3, characterized in that: The support assembly comprises: a bracket, disposed in the vent, and the bracket is fastened to the first valve cover; and The supporting stud is connected to the bracket, and the second abutting portion is provided on the supporting stud.

5. The two-way air pressure balancing valve according to claim 4, characterized in that: A support column is provided on a side of the second valve cover facing the bracket. The second elastic member is sleeved on the support column. Two ends of the second elastic member are respectively in contact with the inner wall surface of the second valve cover and the bracket.

6. The two-way air pressure balancing valve according to claim 4, characterized in that: The bracket and the support stud are correspondingly provided with threaded structures, and the support stud is connected to the bracket through the threaded structure; The supporting stud can be rotated circumferentially to increase or decrease the distance between the second abutting portion and the bracket.

7. The two-way air pressure balancing valve according to any one of claims 1 to 6, characterized in that: Also includes: The breathable heat-insulating cotton is arranged in the vent, and the peripheral side wall surface of the breathable heat-insulating cotton abuts against the inner side wall surface of the vent.

8. The two-way air pressure balancing valve according to any one of claims 1 to 6, characterized in that: A sealing member is provided on the contact surface between the first valve cover and the valve body; and A sealing member is provided on the contact surface between the second valve cover and the first valve cover.

9. An air container, characterized in that: include: The box body has a mounting opening; and The two-way air pressure balancing valve for an air container according to any one of claims 1 to 8, installed at the installation port; Wherein, a sealing member is provided on the contact surface between the bidirectional air pressure balancing valve and the mounting port.

10. The aviation container according to claim 9, characterized in that: When the air pressure in the box is greater than the external air pressure and the pressure difference is greater than or equal to a first threshold, the first valve cover overcomes the elastic force of the first elastic member and moves in a direction away from the valve body; When the air pressure in the box is lower than the external air pressure and the pressure difference is greater than or equal to a second threshold, the second valve body overcomes the elastic force of the second elastic member and moves in a direction away from the first valve body; The first threshold and the second threshold may be the same or different.

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