A low air leakage rate access door for a rotary dehumidifier cabinet

Abstract

A kind of low air leakage rate access door for rotary dehumidifier cabinet, comprising: access door frame plate, access door body and sealing system, access door frame plate is fixed at air conditioner cabinet opening, access door body is connected with access door frame plate, sealing system is located on access door body. Wherein, access door frame plate includes: outer frame outer metal plate, outer frame inner metal plate, outer frame thermal insulation layer, outer frame plastic strip, outer frame pad iron and strong hook. Compared with the prior art, the access door adopts three sealing structures, which significantly reduces the air leakage rate. The outer metal plate of the door core plate is designed in an arc shape to avoid door jamming. The wave-shaped dispensing enhances the bonding force of the sealing glue. The external compression type door lock effectively isolates the cold bridge. The overall sealing and thermal insulation performance is improved by improving the structure, and the energy efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of air treatment and conditioning technology, specifically to a low-leakage inspection door for a rotary dehumidifier housing. Background Technology

[0002] Rotary dehumidifiers are an important branch of air handling and conditioning technology. They are air handling equipment assembled from various air handling functions, including air mixing, air equalization, filtration, cooling, heating, dehumidification, humidification, fan supply, noise reduction, and heat recovery. Access doors are essential for the routine maintenance and repair of these components. Traditional air conditioning unit access doors generally suffer from poor sealing performance, often employing single or simple double-seal structures, which are insufficient to prevent the intrusion of dust, rain, and hot or cold air from the external environment. When hot air seeps into the air conditioning unit, it increases cooling energy consumption; when cold air seeps in, it reduces heating efficiency, resulting in energy waste. Furthermore, the door panel design of traditional access doors is often unreasonable, leading to jamming and collisions when opening and closing, affecting operational convenience and potentially damaging the door, shortening its lifespan. In addition, the application and placement of sealant on traditional access doors are often unscientific, causing the sealant to easily peel off, further weakening the sealing effect. Furthermore, the door lock structure cannot effectively isolate the heat exchange between the inside of the cabinet and the outside, resulting in a cold bridge phenomenon, which is not conducive to the heat preservation and energy saving of the air conditioning unit.

[0003] To address the aforementioned issues, we have made a series of improvements. Utility Model Content

[0004] The purpose of this invention is to provide a low-leakage inspection door for the housing of a rotary dehumidifier, so as to overcome the above-mentioned shortcomings and deficiencies of the prior art.

[0005] A low-leakage maintenance door for a rotary dehumidifier enclosure includes: a maintenance door frame plate, a maintenance door body, and a sealing system. The maintenance door frame plate is fixed to the opening of the air conditioning unit enclosure, the maintenance door body is connected to the maintenance door frame plate, and the sealing system is provided on the maintenance door body.

[0006] The inspection door frame panel includes: an outer metal plate, an inner metal plate, an outer insulation layer, an outer plastic strip, an outer pad, and a strong hook. The outer metal plate has an arc-shaped bending structure, the outer plastic strip is snapped into the arc-shaped bending structure, the outer pad is placed in the groove of the outer plastic strip, the inner metal plate covers the outer metal plate, the outer insulation layer is placed between the outer metal plate and the inner metal plate, the outer insulation layer is made of polyurethane foam, and the strong hook is fixed to the lower end of the outer metal plate and the outer plastic strip.

[0007] Furthermore, the inspection door body includes: an outer metal plate of the inner frame, an inner metal plate of the inner frame, an inner frame insulation layer, an inner frame plastic strip, an inner frame pad, a door lock, and a hinge. The inner frame plastic strip is located at the edge of the outer metal plate of the inner frame, the inner frame pad is located in the groove of the inner frame plastic strip, the inner frame metal plate is located inside the inner frame plastic strip, the inner frame insulation layer is located between the outer metal plate of the inner frame and the inner metal plate of the inner frame, and the door lock and hinge are connected to the bottom end of the outer metal plate of the inner frame.

[0008] Furthermore, the sealing system includes: a flexible PVC sealing strip and an adhesive sealing structure. The flexible PVC sealing strip is connected to the side end of the inner frame plastic strip, and the adhesive sealing structure is located inside the inner frame plastic strip. The adhesive sealing structure is a wavy structure.

[0009] The beneficial effects of this utility model are:

[0010] Compared with traditional technologies, this utility model's inspection door adopts a three-seal structure, which significantly reduces the air leakage rate; the outer metal plate of the door core panel adopts an arc design to avoid jamming when opening and closing the door; the wavy adhesive dots enhance the bonding force of the sealant; the external pressure-type door lock effectively isolates cold bridges; and the improved structure enhances the overall sealing and heat preservation performance, thereby improving energy efficiency. Attached image description:

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a structural diagram of the outer frame plastic strip.

[0013] Figure 3 This is a schematic diagram of the inner frame plastic strip.

[0014] Figure label:

[0015] 100, 110, 111, 120, 130, 140, 150, 160, 160.

[0016] Inspection door body 200, outer metal plate of inner frame 210, inner metal plate of inner frame 220, insulation layer of inner frame 230, plastic strip of inner frame 240, pad of inner frame 250, door lock 260, hinge 270.

[0017] Sealing system 300, flexible PVC sealing strip 310, adhesive sealing structure 320. Detailed Implementation

[0018] The present invention will be further described below with reference to specific embodiments. It should be understood that the following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0019] Example 1

[0020] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 2 This is a structural diagram of the outer frame plastic strip. Figure 3 This is a schematic diagram of the inner frame plastic strip.

[0021] like Figure 1-3 As shown, a low-leakage maintenance door for a rotary dehumidifier housing includes: a maintenance door frame plate 100, a maintenance door body 200, and a sealing system 300. The maintenance door frame plate 100 is fixed to the opening of the air conditioning unit housing, the maintenance door body 200 is connected to the maintenance door frame plate 100, and the sealing system 300 is provided on the maintenance door body 200.

[0022] The inspection door frame panel 100 includes: an outer metal plate 110, an inner metal plate 120, an outer insulation layer 130, an outer plastic strip 140, an outer pad 150, and a strong hook 160. The outer metal plate 110 is provided with an arc-shaped bending structure 111. The outer plastic strip 140 is snapped into the arc-shaped bending structure 111. The outer pad 150 is located in the groove of the outer plastic strip 140. The inner metal plate 120 covers the outer metal plate 110. The outer insulation layer 130 is located between the outer metal plate 110 and the inner metal plate 120. The material of the outer insulation layer 130 is polyurethane foam. The strong hook 160 is fixed to the lower end of the outer metal plate 110 and the outer plastic strip 140.

[0023] The inspection door body 200 includes: an outer metal plate 210 of the inner frame, an inner metal plate 220 of the inner frame, an inner frame insulation layer 230, an inner frame plastic strip 240, an inner frame pad 250, a door lock 260, and a hinge 270. The inner frame plastic strip 240 is located at the edge of the outer metal plate 210 of the inner frame, the inner frame pad 250 is located in the groove of the inner frame plastic strip 240, the inner frame metal plate 220 is located inside the inner frame plastic strip 240, the inner frame insulation layer 230 is located between the outer metal plate 210 and the inner metal plate 220 of the inner frame, and the door lock 260 and the hinge 270 are connected to the bottom end of the outer metal plate 210 of the inner frame.

[0024] The sealing system 300 includes a flexible PVC sealing strip 310 and an adhesive sealing structure 320. The flexible PVC sealing strip 310 is connected to the side end of the inner frame plastic strip 240, and the adhesive sealing structure 320 is located inside the inner frame plastic strip 240. The adhesive sealing structure 320 has a wavy structure.

[0025] The innovation of this utility model lies in changing the traditional right-angle structure of the outer metal plate of the outer frame to an arc-shaped bending structure. This structurally avoids the problems of jamming and touching during the opening and closing of the door, making it easier and smoother for maintenance personnel to open and close the door when performing maintenance operations on the air conditioning unit, improving work efficiency, extending the service life of the door, and reducing maintenance costs.

[0026] Excellent sealing and insulation performance: By adding a three-layer sealing structure, two flexible PVC sealing strips work together with a corrugated adhesive sealing structure to form a multi-layered sealing barrier. Compared with conventional air conditioning unit access doors, this significantly reduces air leakage and effectively blocks the intrusion of external dust, rainwater, and hot or cold air. It reduces heat exchange between the air conditioning unit and the outside environment, improves the insulation performance of the air conditioning unit, reduces energy consumption during cooling or heating, and improves the energy efficiency of the air conditioning system. The flexible PVC sealing strip utilizes the properties of PVC material—it does not deform, age, or become brittle in environments ranging from -20℃ to +80℃—as well as its good elasticity and flexibility. When the access door is closed, it fits tightly, blocking most air leakage and effectively preventing external hot or cold air from seeping into the air conditioning unit. The adhesive sealing method involves applying sealant to the edge of the contact surface between the door frame and the access door body at the location of the corrugated plastic strip on the inner frame. Compared to traditional straight-line dispensing, wavy dispensing increases the contact area between the sealant and the bonding surface, allowing the sealant to better fill gaps under pressure. This effectively reduces the problem of sealant falling off later, further improving the sealing effect and greatly reducing the air leakage rate of the air conditioning unit's access door.

[0027] Durable and reliable sealing effect: The adhesive dispensing structure is designed with a wave-shaped structure, which increases the contact surface of the sealant, enhances the bonding force between the sealant and the inner frame plastic strip, effectively reduces the risk of sealant falling off, and ensures that the access door maintains a good sealing effect during the long-term operation of the air conditioning unit, thus maintaining the stability of the internal environment of the air conditioning unit.

[0028] Highly efficient cold bridge isolation: The door lock 260 of this utility model adopts an external pressure-type door lock, which can tightly isolate the connection between the inside of the air conditioning unit and the outside world, effectively eliminate the cold bridge phenomenon, reduce heat transfer through the door lock part, further improve the heat preservation and energy saving effect of the air conditioning unit, and meet the usage scenarios with high temperature control accuracy requirements.

[0029] Overall optimization: The outer frame plastic strip 140 and outer frame pad 150 are secured to the folded edge of the outer frame metal plate 110, reinforcing the protection of the outer frame metal plate 110 and enhancing the structural stability of the door frame panel. The inner frame plastic strip 240 and inner frame pad 250 reinforce the internal structure and facilitate the later installation of the external handle and hinges 270. The outer frame insulation layer 130 and inner frame insulation layer 230 are filled between the inner and outer metal plates to improve the insulation effect.

[0030] Compared with traditional technologies, this utility model's inspection door adopts a three-seal structure, which significantly reduces the air leakage rate; the outer metal plate of the door core panel adopts an arc design to avoid jamming when opening and closing the door; the wavy adhesive dots enhance the bonding force of the sealant; the external pressure-type door lock effectively isolates cold bridges; and the improved structure enhances the overall sealing and heat preservation performance, thereby improving energy efficiency.

[0031] The specific embodiments of this utility model have been described above, but this utility model is not limited thereto. Various changes can be made to this utility model as long as they do not depart from its spirit.

Claims

1. A low-leakage inspection door for a rotary dehumidifier housing, characterized in that, include: The system includes an inspection door frame plate (100), an inspection door body (200), and a sealing system (300). The inspection door frame plate (100) is fixed to the opening of the air conditioning unit. The inspection door body (200) is connected to the inspection door frame plate (100). The sealing system (300) is located on the inspection door body (200). The inspection door frame panel (100) includes: an outer metal plate (110), an inner metal plate (120), an outer insulation layer (130), an outer plastic strip (140), an outer pad (150), and a strong hook (160). The outer metal plate (110) is provided with an arc-shaped bending structure (111). The outer plastic strip (140) is engaged with the arc-shaped bending structure (111). The outer pad (150) is... 0) The outer frame is located in the groove of the outer frame plastic strip (140), the outer frame inner metal plate (120) covers the outer frame outer metal plate (110), the outer frame insulation layer (130) is located between the outer frame outer metal plate (110) and the outer frame inner metal plate (120), the material of the outer frame insulation layer (130) is polyurethane foam, and the strong hook (160) is fixed to the lower end of the outer frame outer metal plate (110) and the outer frame plastic strip (140).

2. A low-leakage inspection door for a rotary dehumidifier housing according to claim 1, characterized in that, The inspection door body (200) includes: an outer metal plate (210) of the inner frame, an inner metal plate (220) of the inner frame, an inner insulation layer (230) of the inner frame, a plastic strip (240) of the inner frame, an inner frame pad (250) of the inner frame, a door lock (260) and a hinge (270). The plastic strip (240) of the inner frame is located at the edge of the outer metal plate (210) of the inner frame. The inner frame pad (250) is located in the groove of the plastic strip (240) of the inner frame. The inner metal plate (220) of the inner frame is located inside the plastic strip (240) of the inner frame. The inner insulation layer (230) of the inner frame is located between the outer metal plate (210) of the inner frame and the inner metal plate (220) of the inner frame. The door lock (260) and the hinge (270) are connected to the bottom end of the outer metal plate (210) of the inner frame.

3. A low-leakage inspection door for a rotary dehumidifier housing according to claim 2, characterized in that, The sealing system (300) includes: a soft PVC sealing strip (310) and an adhesive sealing structure (320). The soft PVC sealing strip (310) is connected to the side end of the inner frame plastic strip (240). The adhesive sealing structure (320) is located inside the inner frame plastic strip (240) and has a wavy structure.

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