Outer sliding door sealing structure of capsule micro-pressure oxygen cabin

Abstract

The invention provides a capsule micro-pressure oxygen cabin outer sliding door sealing structure, and belongs to the technical field of oxygen cabin door sealing, the capsule micro-pressure oxygen cabin outer sliding door sealing structure comprises a cabin body, and the top of the cabin body is provided with an inlet and an outlet; the transition sealing piece is installed at the inlet and outlet in a lifting mode, the transition sealing piece is provided with an opening matched with the inlet and outlet, the transition sealing piece comprises an inner arc face, an outer arc face and a supporting frame connecting the inner arc face and the outer arc face, the supporting frame is of a hollow structure, and the hollow part is the transition sealing piece opening corresponding to the inlet and outlet; the cabin door is installed on the outer wall of the cabin body in a sliding mode and located on the outer side of the outer arc face; the oxygen cabin door is externally arranged, the transition sealing piece is arranged, and the air cylinder is used for driving the outer arc face to be attached to the cabin door and driving the inner arc face to be attached to the inner wall of the cabin body, so that primary sealing is achieved when the oxygen cabin is started; by means of the design, occupation of the space in the cabin is avoided, comfort in the cabin is guaranteed, and maintenance and overhaul of the cabin door mechanism are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of oxygen cabin door sealing, and in particular to a sealing structure of an outer sliding door of a capsule micro-pressure oxygen cabin. Background Art

[0002] The oxygen chamber is a special medical device for hyperbaric oxygen therapy. Compared with the medical application of hyperbaric oxygen chamber, the pressure of the micropressure oxygen chamber is lower. It is mainly used to improve blood circulation and enhance the body's absorption of oxygen. It is suitable for auxiliary treatment or daily health care under mild hypoxia conditions.

[0003] Currently, most commonly used civilian single-person oxygen chambers are capsule oxygen chambers, which have entrances and exits on the chamber for users to enter and exit. Since the capsule chamber is mostly formed in one piece, the focus of the sealing design of the chamber is on the sealing between the door and the chamber. Conventional doors are mainly of two types: hinged and sliding. Rotating hinged doors require a large space to open and are not suitable for capsule oxygen chambers that have certain requirements on size. Therefore, capsule oxygen chambers mostly use sliding doors.

[0004] The existing authorized patent document CN218542080U discloses a capsule oxygen cabin arc door sealing mechanism, which is combined with an electromagnet. When the electromagnet is energized, the pair of electromagnets produces a repulsive effect to tightly match the cabin door and the sealing strip, thereby improving the sealing performance of the cabin door and the cabin body; the authorized patent document CN219332312U discloses an automatic locking device for a hyperbaric oxygen cabin door. The hyperbaric oxygen cabin door is pushed by the personnel in the cabin to the buffer block. Due to the combined effect of inertia and human thrust, the connecting rod mechanism swings, generating an inward force, causing the sliding door unit to partially deform. The deformation of the sliding door unit causes the door to be in close contact with the sealing strip of the cabin door frame, thereby generating a certain degree of sealing.

[0005] In the above-mentioned prior art, the oxygen cabin is sealed by using sliding doors, but these sliding doors are usually arranged inside the oxygen cabin, that is, inner sliding doors. In this way, since the door needs to move axially to close and radially to pre-press the sealing strip, a sliding mechanism and a lifting mechanism must be designed in the cabin. This not only compresses the internal available space, but also brings a poor experience to users for compact products such as capsule oxygen cabins. In addition, when the door mechanism fails, maintenance or replacement must also be carried out in the cabin, which is relatively inconvenient.

[0006] However, if the door is set on the outside of the capsule oxygen cabin, there will be some sealing problems. The sealing principle of the inner sliding door is to apply pre-pressure to the sealing strip when the capsule oxygen cabin is started and the door is closed. Then, as the pressure in the cabin rises, the internal air will exert outward pressure on the door, so that the door is close to the bulkhead to complete the seal. In contrast, the outer sliding door is different. As the pressure in the cabin increases, the external door may gradually move away from the bulkhead, thus affecting the sealing effect. In addition, the sealing of the inner sliding door relies on the close fit between the contact surface of the door and the bulkhead, while the outer sliding door has a large matching clearance between the linear bearing and the guide rail assembly, coupled with the effect of pressure, it is difficult to achieve a close fit between the contact surface of the door and the bulkhead. Summary of the invention

[0007] The object of the present invention is to provide a sealing structure for an outer sliding door of a capsule micro-pressure oxygen chamber to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions: A sealing structure for an outer sliding door of a capsule micro-pressure oxygen chamber, comprising: A cabin, wherein an inlet and outlet are provided on the top of the cabin; A transition seal, which can be lifted and installed at the inlet and outlet, is provided with an opening matching the inlet and outlet, and comprises an inner arc surface, an outer arc surface and a support frame connecting the two, and the support frame is a hollow structure, and the hollow part is the transition seal opening corresponding to the inlet and outlet; The hatch is slidably mounted on the outer wall of the cabin body and is located outside the outer curved surface, and the sliding direction of the hatch is defined as left and right.

[0009] As a further improvement, the inner curved surface is located on the inner side of the cabin body, and the outer curved surface is located on the outer side of the cabin body.

[0010] As a further improvement, sealing strips for fitting the cabin door and the inner wall of the cabin are respectively installed on the upper surfaces of the outer curved surface and the inner curved surface.

[0011] As a further improvement, a cylinder is fixedly installed at the bottom of the outer arc surface to facilitate the lifting and lowering of the transition seal, and a supporting platform for supporting the cylinder is provided on the cabin corresponding to the cylinder.

[0012] As a further improvement, a plurality of guide rails are arranged on the circumference of the outer wall of the cabin body to facilitate the left and right sliding of the cabin door, and the guide rails are symmetrically distributed along the vertical plane where the central axis of the cabin body is located.

[0013] As a further improvement, the cabin door is arc-shaped, and a sliding block cooperating with the guide rail is provided on the inner side of the cabin door. The cabin door is slidably mounted with the cabin body through the sliding block and the guide rail.

[0014] As a further improvement, an interface area and an automatic pressure relief valve are fixedly installed on the cabin, and a lying platform is provided inside the cabin.

[0015] As a further improvement, a plurality of universal wheels are installed on both sides of the bottom of the cabin body to facilitate the movement or fixation of the oxygen cabin.

[0016] The beneficial effects of the above technical solution of the present invention are as follows: The present invention places the oxygen cabin door outside and uses a transition seal as a sealing solution for the external sliding cabin door of the oxygen cabin. By installing sealing strips on the outer curved surface and the inner curved surface of the transition seal, and using a cylinder to drive the outer curved surface to fit the cabin door and the inner curved surface to fit the inner wall of the cabin, initial sealing is achieved when the oxygen cabin is started. This design avoids the occupation of space in the cabin, ensures the comfort in the cabin, and facilitates the maintenance and inspection of the cabin door mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 The overall structure provided for Example 1 is shown in FIG. Figure 1 ; Figure 2 The overall structure provided for Example 1 is shown in FIG. Figure 2 ; Figure 3 The front view provided for Example 1; Figure 4 for Figure 3 Left view of; Figure 5 A schematic diagram of the structure of the cabin provided in Example 1; Figure 6 A schematic diagram of the structure of the transition seal provided in Example 1; Figure 7 A schematic diagram of the structure of the hatch provided in Example 1; Figure 8 for Figure 3 AA section view; Fig. 9 The overall structural diagram provided for Example 2; Fig.10 A schematic diagram of the operation of the transition seal provided in Example 2; Fig.11 for Fig.10 A and B are enlarged images.

[0018] Description of reference numerals: 1. Cabin body; 11. Inlet and outlet; 12. Lying platform; 13. Support platform; 14. Guide rail; 15. Universal wheel; 16. Interface area; 17. Automatic pressure relief valve; 2. Transition seal; 21. Inner arc surface; 22. Outer arc surface; 23. Support frame; 24. Cylinder; 25. Sealing strip; 3. Cabin door; 31. Slider; 41. Air cavity; 42. Inflation port; 43. Air gap; 44. Pressure plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the prior art, most capsule oxygen cabins use an inward sliding door. The design of the inward sliding door and its sliding structure greatly compresses the available space in the cabin, giving users a poor adaptation experience. Setting the door outside the oxygen cabin certainly increases the space inside the cabin, but it is difficult to achieve a close fit between the contact surface of the door and the cabin wall, and there are certain sealing problems.

[0022] In view of the above problems, the present invention designs a new sealing structure, which cancels the traditional radial movement of the door 3 of the capsule oxygen cabin, and only retains the axial movement of the door 3 in the left and right directions. In addition, a transition seal 2 is added, and the sealing strip 25 on the transition seal 2 is driven by the cylinder 24 to pre-press and fit with the inner wall of the door 3 and the cabin body 1 respectively, so as to complete the initial sealing between the door 3 and the cabin body 1; then, the pressure in the cabin gradually increases, and an outward pressure is generated on the transition seal 2 and the door 3. In this process, since the door 3 is arc-shaped, the radial movement of the door 3 is cancelled, and there is a guide rail to limit the door 3, the transition seal 2 can be tightly fitted with the door 3 under the action of pressure, thereby achieving complete sealing of the oxygen cabin. After the oxygen cabin is completely sealed, the cylinder 24 is deflated and maintained in a deflated state. When the oxygen cabin stops running and the pressure in the cabin drops, the pressure in the cabin then drops, and the transition seal 2 sinks by gravity. At this time, a gap is generated between the outer arc surface 22 and the door 3, and the door 3 can slide open.

[0023] After introducing the basic principle of the present invention, various non-limiting embodiments of the present invention are described in detail below. The number of any element in the drawings is for illustration and not for limitation, and any naming is only for distinction and does not have any limiting meaning.

[0024] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0025] Embodiment 1 of the sealing structure of the outer sliding door of a capsule micro-pressure oxygen chamber provided by the present invention: like Figure 1 As shown, a sealing structure for the sliding door outside a capsule micro-pressure oxygen cabin includes a cabin body 1, a transition seal 2 and a cabin door 3.

[0026] like Figure 1 , Figure 2 , Figure 5 and Figure 8 As shown, the oxygen cabin is capsule-shaped, and an inlet and outlet 11 is provided on the top of the cabin body 1 to facilitate users to enter and exit the oxygen cabin. A lying platform 12 is fixedly installed in the cabin body 1 to facilitate users to lie down after entering, thereby improving the user's experience. The inlet and outlet 11 is designed to be close to the end of the cabin body 1, and sufficient space is reserved for the cabin door 3 when the cabin door 3 is opened; a number of horizontal supporting platforms 13 for supporting the cylinder 24 are integrally formed or fixedly installed on the outer wall of the cabin body 1 on the left and right sides of the inlet and outlet 11, and these platforms can ensure that accurate force points are provided when the cylinder 24 is extended and retracted, thereby avoiding deviation of the transition seal 2 during the lifting process; the oxygen cabin body 1 is set up in one piece to ensure the sealing performance of the oxygen cabin body 1.

[0027] like Figure 3-5As shown, a plurality of guide rails 14 are arranged on the circumference of the cabin body 1 to facilitate the left and right sliding of the cabin door 3. The guide rails 14 are fixedly mounted on the outer side wall of the cabin body 1, and the guide rails 14 are symmetrically distributed along the vertical plane where the central axis of the cabin body 1 is located. The guide rails 14 are used to provide guidance for the cabin door 3 and limit the cabin door 3. When the cabin door 3 is under pressure, it provides multi-directional support to prevent the cabin door 3 from shifting and causing the oxygen chamber to be poorly sealed; an interface area 16 is also fixedly mounted on the cabin body 1, and the interface area 16 is used to connect external pipelines, such as a high-pressure air pipe for filling the cabin, an oxygen pipe for oxygen inhalation, a pressure detection pipe, a wiring harness pipe in the cabin, and a reflux pipe, etc.; an automatic pressure relief valve 17 is also fixedly mounted on the cabin body 1, which is used for automatic pressure relief when the oxygen chamber stops running or the pressure in the cabin body 1 is too high, and universal wheels 15 are also fixedly mounted on both sides of the bottom of the cabin body 1 to facilitate the movement of the oxygen chamber and the positioning of the oxygen chamber after the movement.

[0028] like Figure 4 and Figure 7 As shown, the hatch 3 is designed to be in a large arc shape and is installed on the outside of the cabin body 1 in a semi-enclosed manner. Its strength is sufficient to withstand the pressure in the cabin without causing significant deformation. A number of sliders 31 cooperating with the guide rails 14 are fixedly installed on the inner side of the hatch 3. The hatch 3 is slidably installed with the cabin body 1 through these sliders 31 and the guide rails 14. It can slide left and right along the direction of the guide rails 14 for opening and closing operations. At the same time, the guide rails 14 also apply multi-directional limiting forces to the hatch 3 to ensure that the hatch 3 remains stable when under pressure.

[0029] like Figure 1 , Figure 4 and Figure 6 As shown, the transition seal 2 can be lifted and installed at the inlet and outlet 11. The transition seal 2 is provided with an opening matching the inlet and outlet 11. The transition seal 2 includes an inner arc surface 21, an outer arc surface 22 and a support frame 23 fixedly connecting the two, wherein the inner arc surface 21 is located on the inner side of the cabin body 1, and the outer arc surface 22 is located between the cabin body 1 and the hatch 3. The support frame 23 is made of hard material and has a hollow structure. The hollow part is the opening of the transition seal 2 corresponding to the inlet and outlet 11; a plurality of cylinders 24 cooperating with the support platform 13 are fixedly installed at the bottom of the outer arc surface 22, and the cylinder 24 push rod is fixedly connected to the support platform 13. The cylinder 24 is designed with a fixed stroke and has two states of falling and lifting. The cylinder 24 is lifted up at the beginning of the oxygen cabin pressurization process to complete the rise and preliminary sealing of the transition seal 2.

[0030] The upper surface of the outer arc surface 22 and the inner wall of the hatch door 3 have the same curvature, and the upper surface of the inner arc surface 21 and the inner wall of the cabin 1 have the same curvature. The same curvature ensures that the outer arc surface 22 and the hatch door 3, and the inner arc surface 21 and the cabin 1 can fit tightly. Furthermore, the distance between the upper surface of the outer arc surface 22 and the upper surface of the inner arc surface 21 is the same as the distance between the inner wall of the hatch door 3 and the inner wall of the cabin 1. This consistency of distance can ensure that when the hatch door 3 is in the closed state, the contour formed by the outer arc surface 22 and the inner arc surface 21 can perfectly match the contours of the cabin 1 and the hatch door 3, and seal synchronously, thereby meeting the sealing requirements required for the oxygen cabin.

[0031] When the oxygen chamber is completely sealed, the cylinder 24 is in a deflated state. When the oxygen chamber is closed and the pressure inside the chamber is reduced, the transition seal 2 sinks by gravity, driving the cylinder 24 to fall at the same time. At this time, the transition seal 2 is in a natural state, and there is always a gap between the outer arc surface 22 and the cabin door 3, which can ensure that the cabin will not be sealed for a long time, thereby ensuring the safety of people in the cabin under special circumstances.

[0032] like Figure 4 and Figure 6 As shown, the upper surfaces of the outer arc surface 22 and the inner arc surface 21 are respectively installed with sealing strips 25 for sealing the cabin door 3 and the cabin body 1. When the device is running, the cylinder 24 drives the transition seal 2 to rise, and the gap between the transition seal 2 and the inlet and outlet 11 provides a directional limit for the rise of the transition seal 2, ensuring that the transition seal 2 will not deviate from the predetermined path during the rise, thereby ensuring its precise fit with the cabin door 3 and the inner wall of the cabin body 1. The cylinder 24 drives the outer arc surface 22 to fit the cabin door 3, while the inner arc surface 21 fits the inner wall around the inlet and outlet 11, and pre-presses the sealing strip 25 to ensure that the sealing strip 25 is in full contact with the cabin door 3 and the inner wall around the inlet and outlet 11, thereby achieving preliminary sealing. As the pressure in the cabin gradually increases, the transition seal 2 further applies pressure to the cabin door 3 and the inner wall of the cabin body 1 under the action of air pressure, completing the overall sealing of the capsule oxygen cabin, ensuring the pressure stability and safety inside the cabin body 1.

[0033] Embodiment 2 of the sealing structure of the outer sliding door of a capsule micro-pressure oxygen chamber provided by the present invention: The main difference between it and Example 1 is: like Figure 9-11As shown, in this embodiment, the support frame 23 is a foldable soft material, wherein the inner arc surface 21 is directly fixedly connected to the cabin body 1 as a whole, and on the outside of the support frame 23, an air cavity 41 is fixedly installed between the outer arc surface 22 and the cabin body 1 for supporting the outer arc surface 22 for preliminary sealing, and a pressure plate 44 is extended outward from the top of the air cavity 41 toward the opening direction of the transition seal 2 to facilitate complete sealing of the cabin door 3, and an air gap 43 is reserved between the pressure plate 44 and the outer arc surface 22 to facilitate the support of the air cavity 41, and the air cavity 41 has an inflation port 42 for inflation. When inflating, the pressure plate 44 can be supported by the air cavity 41.

[0034] When the oxygen cabin pressurization process begins, the external equipment inflates the air cavity 41 through the inflation port 42, and the air cavity 41 expands and contacts the outer arc surface 22. Then the outer arc surface 22 rises and fits the cabin door 3 by relying on the action of the air cavity 41, completing the initial sealing. As the pressure in the cabin gradually increases, the air pressure exerts a force on the cabin door 3 through the pressure plate 44 on the outer arc surface 22, thereby further fitting the outer arc surface 22 with the cabin door 3, and finally completing the overall sealing of the capsule oxygen cabin. This process ensures the sealing between the cabin door 3 and the cabin body 1 under high pressure, thereby ensuring the stability of the internal environment of the oxygen cabin. When the oxygen cabin stops working and the pressure in the cabin decreases, the air cavity 41 is depressurized, and the outer arc surface 22 falls by relying on its own gravity. At this time, it is in a natural state and always maintains a certain gap with the cabin door 3.

[0035] This design, by fixedly connecting the inner arc surface 21 to the cabin body 1, avoids the inner arc surface 21 from falling synchronously with the outer arc surface 22 due to the oxygen cabin stopping operation, further saves the occupied space inside the cabin body 1, and improves the comfort of the user.

[0036] The above-mentioned ideal embodiments of the present invention are used as inspiration, but it is obvious to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art will think of many changes, modifications and alternatives without departing from the thought and spirit of the present invention. It should be understood that in the process of practicing the present invention, various alternatives to the embodiments of the present invention described herein may be adopted. The attached claims are intended to define the scope of protection of the present invention, and therefore cover the modular composition, equivalent or alternatives within the scope of protection of these claims.

Claims

1. A sealing structure for the outer sliding door of a capsule micro-pressure oxygen chamber, characterized in that: include: A cabin (1), wherein an inlet and outlet (11) is provided on the top of the cabin (1); A transition seal (2), the transition seal (2) being installed at the inlet and outlet (11) in a liftable manner, the transition seal (2) being provided with an opening matching the inlet and outlet (11), the transition seal (2) comprising an inner arc surface (21), an outer arc surface (22) and a support frame (23) connecting the two, the support frame (23) being a hollow structure, the hollow portion being the opening of the transition seal (2) corresponding to the inlet and outlet (11); A cabin door (3) is slidably mounted on the outer wall of the cabin body (1) and is located outside the outer arc surface (22), and the sliding direction of the cabin door (3) is defined as left and right.

2. The outer sliding door sealing structure of a capsule micro-pressure oxygen chamber according to claim 1, characterized in that: The inner curved surface (21) is located on the inner side of the cabin body (1), and the outer curved surface (22) is located on the outer side of the cabin body (1).

3. The outer sliding door sealing structure of a capsule micro-pressure oxygen chamber according to claim 1, characterized in that: Sealing strips (25) for fitting the cabin door (3) and the inner wall of the cabin body (1) are respectively installed on the upper surfaces of the outer curved surface (22) and the inner curved surface (21).

4. The outer sliding door sealing structure of a capsule micro-pressure oxygen chamber according to claim 1, characterized in that: A cylinder (24) is fixedly mounted at the bottom of the outer arc surface (22) to facilitate the lifting and lowering of the transition seal (2), and a support platform (13) for supporting the cylinder (24) is provided on the cabin (1) corresponding to the cylinder (24).

5. The outer sliding door sealing structure of a capsule micro-pressure oxygen chamber according to claim 1, characterized in that: A plurality of guide rails (14) are arranged on the circumference of the outer wall of the cabin body (1) to facilitate the left and right sliding of the cabin door (3); the guide rails (14) are symmetrically distributed along the vertical plane where the central axis of the cabin body (1) is located.

6. The outer sliding door sealing structure of a capsule micro-pressure oxygen chamber according to claim 5, characterized in that: The hatch door (3) is arc-shaped, and a sliding block (31) cooperating with the guide rail (14) is provided on the inner side of the hatch door (3). The hatch door (3) is slidably mounted on the cabin body (1) via the sliding block (31) and the guide rail (14).

7. The outer sliding door sealing structure of a capsule micro-pressure oxygen chamber according to claim 1, characterized in that: An interface area (16) and an automatic pressure relief valve (17) are fixedly mounted on the cabin (1), and a lying platform (12) is provided inside the cabin (1).

8. The outer sliding door sealing structure of a capsule micro-pressure oxygen chamber according to claim 1, characterized in that: A plurality of universal wheels (15) are installed on both sides of the bottom of the cabin body (1) to facilitate the movement or fixation of the oxygen cabin.

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