Simple overhaul sealing door
By designing a slightly bent C-shaped access door panel and a hollow back panel structure, combined with bolted connections and conical seals, the problems of air leakage and noise in large-size access doors have been solved, resulting in improved strength and sealing performance, expanded applicability, and simplified maintenance operations.
Patent Information
- Application Number
- CN202422948922.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-02
AI Technical Summary
Existing sheet metal access doors suffer from severe air leakage and abnormal noise when they are large in size. Furthermore, existing reinforcement solutions, such as thick plates and welded reinforcing ribs, can affect the stability and appearance of the unit, and mold pressing is limited by size.
The access door panel adopts a slightly bent C-shaped structure, combined with a hollow back panel and bolt connections. It uses conical seals and multiple hinges to form a hollow square tube structure, which enhances the strength and sealing performance of the access door.
Without increasing the amount of sheet metal used, the strength and sealing performance of the access door were improved, air leakage and noise were reduced, applicability was expanded, and the maintenance process was simplified.
Smart Images
Figure CN223634597U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to air conditioning unit related equipment technical field more particularly, it is a simple and easy overhaul sealing door. BACKGROUND
[0002] Air conditioning unit usually adopts box body structure to make. The box body can be divided into foamed board box body and simple sheet metal box body, and the simple sheet metal box body is mostly adopted when there is no heat preservation demand. For large size box body structure air conditioning unit, in order to facilitate daily maintenance, an overhaul door is arranged at a specific position.
[0003] The existing sheet metal structure overhaul door is mostly combined with single layer door plate and door frame, can meet the use requirement when the size of the overhaul door is small, but when the size of the overhaul door is large, there is large static pressure in the unit, and then air leakage is serious, and abnormal noise problem is generated, in order to increase the strength of the large size overhaul door, the common technical scheme in the prior art is as follows: the door plate is processed by using large thickness plate material, a reinforcing plate is welded on the back of the door plate or a die is pressed;
[0004] But the large thickness plate material has limited strength improvement, and the local weight is increased, which is not conducive to the overall stability of the unit, and the cost of the unit is also increased; the reinforcing rib is welded on the back of the door plate, and the welding will leave welding marks, which is not suitable for the plate material limited to paint spraying treatment, otherwise the appearance of the unit will be affected; the die pressing reinforcement is limited by the size of the die, and the applicability is not wide.
[0005] Therefore, how to ensure the structural strength of the overhaul door and improve the sealing performance of the overhaul door during the installation process of the large size overhaul door is a problem to be solved by the person skilled in the art. INVENTION CONTENTS
[0006] The utility model provides a simple and easy overhaul sealing door, and its beneficial effects are that when the size of the body is large, good use strength and sealing performance can still be stably provided, and convenience is brought to actual use.
[0007] A simple and easy overhaul sealing door, comprising an overhaul door frame, a sealing door is rotatably connected to the overhaul door frame, the sealing door comprises a door plate, a door back plate is fixedly connected to the door plate through bolts, a sealing element is fixed to the overhaul door frame, the door plate is a C-shaped structure slightly bent towards the direction of the overhaul door frame, and the door back plate is a hollow structure.
[0008] The door back plate is provided with two.
[0009] The door plate and the sealing element are conically sealed.
[0010] The overhaul door frame comprises a middle column, a panel, a vertical column and a cross beam, the middle column and the vertical column are fixed at the left and right ends of the cross beam through bolts, and the panel is fixed between the middle column and the vertical column.
[0011] The overhauling sealing door is provided with a hinge, and the overhauling sealing door and the overhauling door frame are rotationally connected through the hinge.
[0012] The hinge is provided with a plurality of. BRIEF DESCRIPTION OF DRAWINGS
[0013] The utility model will be made further detailed description in combination with the drawings and specific implementation method.
[0014] Figure 1 And Figure 2 It is a simple overhauling sealing door's structural schematic diagram;
[0015] Figure 3 It is overhauling door plate's structural schematic diagram;
[0016] Figure 4 It is B-B direction's section structural schematic diagram;
[0017] Figure 5 It is D's enlarged structural schematic diagram;
[0018] Figure 6 It is C-C direction's section structural schematic diagram;
[0019] Figure 7 It is E's enlarged structural schematic diagram. DETAILED DESCRIPTION
[0020] As Figures 1-6 Shown:
[0021] Including overhauling door frame 1, overhauling sealing door 2 is rotationally connected on overhauling door frame 1, the overhauling sealing door 2 includes overhauling door plate 21, and overhauling door backplate 22 is fixedly connected through bolt on overhauling door plate 21, and sealing element 3 is fixed on overhauling door frame 1, and the overhauling door plate 21 is a C-shaped structure that is slightly bent to the direction of overhauling door frame 1, and the overhauling door backplate 22 is a hollow structure.
[0022] By using bolt detachable connection overhauling door backplate 22 on overhauling door plate 21, the use intensity of overhauling sealing door 2 is increased, overhauling sealing door 2 is not prone to deformation, and since the connecting mode between the two is bolt connection, the overhauling door strength can be enhanced without increasing the amount of plate material, and different weights of overhauling door backplate 22 can be connected on overhauling door plate 21 according to actual use demand, so that the applicability of the equipment is expanded;
[0023] Sealing element 3 can fill the connecting position between overhauling door plate 21 and overhauling door frame 1, so that overhauling door plate 21 can fully separate the internal environment from the external environment after buckling, and the sealing effect and windproof performance of the equipment are improved;
[0024] The inspection door back panel 22 and the inspection door panel 21 are combined to form a hollow square tube structure. According to mechanics of materials, the higher the stiffness, the less likely the material or structure is to undergo elastic deformation under stress. The magnitude of stiffness depends on the elastic modulus of the material and the geometry of the structure. Bending stiffness K is the product of the material's elastic modulus E and the moment of inertia I of the cross section. When the material is fixed, the elastic modulus is determined, and the stiffness is determined by the moment of inertia of the cross section. The door panel, after being bent into a C-shape, can be approximated as a thin-walled channel steel. Using the channel steel as a reference, referring to the steel profile specification table, when the ratio of the channel steel height to the leg width is relatively large, the moment of inertia in the height direction is nearly 10 times higher than the moment of inertia in the leg width direction. The hollow structure can be regarded as a combination of two channel steel legs. The moment of inertia of the hollow structure can be approximated as twice the moment of inertia in the height direction. That is, the moment of inertia of the hollow square tube structure of the door panel is about 20 times that of the door panel only bent into a C-shape. According to the formula for calculating the moment of inertia of the cross section, a similar conclusion can be obtained. Therefore, after adding a 22mm back panel to the access door, the strength can be greatly improved, the access door is not easily deformed, the sealing performance is improved, and noise can be reduced.
[0025] like Figure 2 As shown:
[0026] The inspection door back panel 22 is provided in two parts.
[0027] In actual use, the two inspection door back panels 22 can be spliced together to overlap the rear side of the inspection door panel 21. This means that if a certain inspection door back panel 22 is deformed due to sudden external force or other factors during actual use, the deformed inspection door back panel 22 can be replaced by loosening the bolts, thereby reducing the difficulty of subsequent operation and maintenance.
[0028] like Figures 3-6 As shown:
[0029] The inspection door panel 21 and the inspection door frame 1 are sealed with a conical surface.
[0030] The inspection door panel 21 and the inspection door frame 1 are sealed with a conical surface, and the sealing surface of the inspection door panel 21 is inclined towards the sealing surface of the door frame. The conical surface seal can provide a larger sealing area and improve the sealing performance. At the same time, the presence of the conical surface will make the deformation of the sealing element larger, resulting in a larger sealing force, which further improves the sealing performance.
[0031] like Figures 3-6 As shown:
[0032] The sealing element 3 is made of an elastic material.
[0033] The elastic material allows the sealing element 3 to deform and fit tightly against the surface of the inspection door panel 21 when the inspection door panel 21 is fastened to the inspection door frame 1, thereby further increasing the sealing effect between the inspection door panel 21 and the inspection door frame 1.
[0034] As shown in Figures 1-2 :
[0035] The access door frame 1 comprises a middle column 11, a panel 12, a vertical column 13 and a cross beam 14, the middle column 11 and the vertical column 13 are respectively fixed on the left and right ends of the cross beam 14 through bolts, and the panel 12 is fixed between the middle column 11 and the vertical column 13.
[0036] The complete access door frame 1 is formed by the middle column 11, the panel 12, the vertical column 13 and the cross beam 14, and provides support for the access sealing door 2.
[0037] As shown in Figure 1 :
[0038] The access sealing door 2 is provided with a hinge 23, and the access sealing door 2 and the access door frame 1 are rotationally connected through the hinge 23.
[0039] The hinge 23 realizes the rotational connection relationship between the access sealing door 2 and the access door frame 1.
[0040] As shown in Figure 1 :
[0041] The hinge 23 is provided with a plurality of
[0042] The plurality of hinges 23 can ensure the stability of the rotational connection.
[0043] As shown in Figure 1 :
[0044] The access sealing door panel 21, the access door back plate 22, the connecting rod guide rail 25, the middle column 11, the panel 12, the vertical column 13 and the cross beam 14 are all processed by steel plate materials.
[0045] The processing of the steel plate material makes the device only need to be simply sheet metal processed to be formed, which is convenient to process and easy to realize.
[0046] As shown in Figures 1-2 :
[0047] The access door panel 21 is fixedly connected with a connecting rod lock 25, and the cross beam 14 is provided with a round hole capable of inserting the connecting rod.
[0048] When it is needed to open the access door panel 21, the connecting rod on the connecting rod lock 25 can be pulled out from the round hole on the cross beam 14 by twisting the connecting rod lock 25, and then the subsequent operation of opening the access door panel 21 can be smoothly performed, and the closing of the access door panel 21 is the same.
[0049] The connecting rod lock 25 is a top and bottom connecting rod lock, which is a relatively mature prior art in the prior art and is widely used on various doors and windows, and is a basic setting that can be seen everywhere in daily life, so the basic principle will not be described here.
[0050] As shown in Figure 2
[0051] The maintenance door plate 21 is fixedly connected with a connecting rod guide rail 25.
[0052] The connecting rod guide rail 25 can stably guide the connecting rod on the connecting rod lock 25, so that the connecting rod can be stably inserted into or pulled out of the round hole in subsequent use.
Claims
1. A simple access door, characterized in that, Including the access door door frame (1), the access door door frame (1) is rotatably connected with access sealing door (2), the access sealing door (2) includes access door panel (21), the access door panel (21) is fixedly connected with access door backplate (22) through bolt, the access door door frame (1) is fixedly connected with sealing element (3), the access door panel (21) is slightly bent C-shaped structure to the direction of access door door frame (1), and the access door backplate (22) is hollow structure.
2. A simple access door according to claim 1, characterized in that The access door backplate (22) is provided with two.
3. A simple access door according to claim 2, wherein, The conical surface seal is arranged between the access door panel (21) and the access door door frame (1).
4. A simple access door according to claim 3, wherein, The sealing element (3) is made of elastic material.
5. A simple access door according to claim 1, wherein, The access door door frame (1) includes middle column (11), panel (12), stand column (13) and crossbeam (14), the middle column (11) and stand column (13) are fixedly connected with the panel (12) between the crossbeam (14) left and right ends respectively through bolt.
6. A simple access door according to claim 5, wherein, The access sealing door (2) is provided with hinge (23), and the access sealing door (2) and the access door door frame (1) are rotatably connected through the hinge (23).
7. A simple access door according to claim 6, wherein, The hinge (23) is provided with multiple.
8. A simple access door according to claim 1, wherein, The access door panel (21) is fixedly connected with connecting rod lock (24), the crossbeam (14) is provided with circular hole that can be inserted into connecting rod, the access door panel (21) is fixedly connected with connecting rod guide rail (25), and the access door panel (21), access door backplate (22), connecting rod guide rail (25), middle column (11), panel (12), stand column (13) and crossbeam (14) are all made of steel plate material.