Anti-cold bridge door

Abstract

The utility model relates to the technical field of air handling units, in particular to an anti-cold-bridge door which comprises a frame assembly and a door plate assembly which are rotationally connected, protruding blocks are formed at the opposite ends of the frame assembly and the door plate assembly, and the protruding blocks of the frame assembly and the protruding blocks of the door plate assembly are matched. The frame assembly comprises a first door frame and a second door frame, the first door frame and the second door frame are both fixed to a wall, first heat insulation assemblies are arranged between the first door frame and the wall and between the second door frame and the wall, and the first door frame and the second door frame are provided with second heat insulation assemblies on the inner sides of the protruding blocks of the frame assembly; the door plate assembly comprises a first door plate and a second door plate, the first door plate and the second door plate are fixedly connected through a fourth heat insulation assembly on the inner side of a convex block of the door plate assembly, and a fifth heat insulation assembly is further filled between the first door plate and the second door plate; and a sixth heat insulation assembly is arranged between the second heat insulation assembly and the fourth heat insulation assembly. The cold bridge prevention door is high in structural strength and good in cold bridge prevention effect and sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of air handling units, and particularly relates to an anti-cold-bridge door. Background Art

[0002] An air handling unit is a device with functions of purifying, temperature-adjusting, humidity-adjusting air, etc., which is composed of multiple functional sections such as an air inlet section, a filtration section, a heating section, a refrigeration section, a humidification section, a fan motor section, a diffuser section, etc. Since this type of unit belongs to a large unit and each function requires regular cleaning, filter replacement and other maintenance work, a door panel is provided for each functional section. During the operation of the air handling unit, there is a temperature difference between the inside and outside of its box body. The anti-cold-bridge effect of the upper door panel of the existing air handling unit is not good, so this door panel will cause the loss of cold and heat of the air handling unit. Therefore, there is an urgent need for an anti-cold-bridge door to solve the above problems. Content of the Utility Model

[0003] In order to solve the technical problem that the anti-cold-bridge effect of the upper door panel of the existing air handling unit is not good, which will cause the loss of cold and heat of the air handling unit, the utility model provides an anti-cold-bridge door. There is no metal high thermal conductivity material between the first door frame and the second door frame, nor between the first door panel and the second door panel, and there is no connection with any metal high thermal conductivity material between the frame assembly and the door panel assembly, with high structural strength, good anti-cold-bridge effect and sealing performance.

[0004] The utility model provides an anti-cold-bridge door, including a frame assembly and a door panel assembly connected in a rotational manner. Opposite ends of the frame assembly and the door panel assembly both form convex blocks and the convex blocks of the two match each other; the frame assembly includes a first door frame and a second door frame, both the first door frame and the second door frame are fixed on the wall, and a first heat insulation assembly is arranged between each of the first door frame and the second door frame and the wall, and a second heat insulation assembly is arranged inside the convex block of the frame assembly for the first door frame and the second door frame; the door panel assembly includes a first door panel and a second door panel, and the first door panel and the second door panel are fixedly connected through a fourth heat insulation assembly inside the convex block of the door panel assembly, and a fifth heat insulation assembly is also filled between the first door panel and the second door panel; a sixth heat insulation assembly is arranged between the second heat insulation assembly and the fourth heat insulation assembly.

[0005] Further, the fourth heat insulation assembly is a reinforcing strip, the first door panel and the second door panel are fixedly connected through the reinforcing strip to form a sealed space, the fifth heat insulation assembly is located in the sealed space, the upper part of the reinforcing strip is fixedly connected with the fifth heat insulation assembly, the sixth heat insulation assembly is a sealing strip, the lower part of the reinforcing strip is fixedly connected with the sealing strip, and the sealing strip contacts the second heat insulation assembly.

[0006] Furthermore, reinforcing ribs are provided on the upper part of the reinforcing strip, and the reinforcing ribs extend into the fifth heat insulation component and are fixedly connected thereto; a glue groove is provided on the lower part of the reinforcing strip. One ends of the glue groove and the sealing strip are both in a barb shape, one end of the sealing strip is snapped into the glue groove, the other end of the sealing strip is semicircular, and the other end of the sealing strip contacts the second heat insulation component.

[0007] Furthermore, the first heat insulation component is flexible cotton.

[0008] Furthermore, the flexible cotton is set as PE foam cotton.

[0009] Furthermore, the second heat insulation component is a plastic sheet, and the fifth heat insulation component is set as one of PU foam, rock wool board, XPS board or EPS board.

[0010] Furthermore, the third heat insulation component is filled in the convex block of the frame assembly.

[0011] Furthermore, the third heat insulation component is a wooden strip, a channel is provided on the wooden strip, a fixing groove is provided in the channel, the fixing groove is threadedly connected to one end of a countersunk head screw, and the other end of the countersunk head screw passes through a screw hole on the first door frame and is located below the second heat insulation component.

[0012] Furthermore, a hinge is provided at one end of the first door frame close to the wall, and a hinge shaft is provided at one end of the first door frame close to the first door frame. The hinge shaft is fixedly connected to the hinge shaft of the hinge.

[0013] Furthermore, one end of the first door panel close to the first door frame and one end of the hinge shaft are fixedly connected by bolts, and the other end of the hinge shaft fixedly connected to the hinge shaft is inclined.

[0014] Compared with the prior art, the utility model has the following technical effects:

[0015] The first door panel and the second door panel are fixedly connected through a reinforcing strip, and a sealed space is formed between them. PU foam (in liquid state) is injected into the sealed space. After the PU foam becomes a rigid foam, it generates adhesiveness, which further fixes and connects the first door panel and the second door panel together. There is no metal high - thermal - conductivity material between the first door panel and the second door panel. The countersunk head screws are connected to the screw holes and the fixing grooves. At the same time, one ends of the first door frame and the second door frame close to the wall are respectively fixedly connected to both sides of the wall through screws. There is no metal high - thermal - conductivity material between the first door frame and the second door frame and the wall. Finally, the first door panel and the first door frame are rotatably connected through a hinge. Eventually, the door panel assembly can rotate relative to the frame assembly. When the sealing strip contacts the plastic sheet, there is no seam and no metal high - thermal - conductivity material between them. Therefore, there is no metal high - thermal - conductivity material connecting the frame assembly and the door panel assembly. For the cold - bridge prevention door of the present utility model, there is no metal high - thermal - conductivity material between the first door frame and the second door frame, nor between the first door panel and the second door panel, and there is no metal high - thermal - conductivity material connecting the frame assembly and the door panel assembly. It has high structural strength, good cold - bridge prevention effect and sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic cross - sectional structure view of a cold - bridge prevention door of the present utility model;

[0017] Figure 2 is a schematic structure view of the cold - bridge prevention door of the present utility model installed on the wall of an air handling unit;

[0018] The reference numerals in the drawings are:

[0019] 1. Frame assembly; 11. First door frame; 12. Second door frame; 13. Fixing groove; 14. Countersunk head screw; 15. Second heat - insulation component; 16. Third heat - insulation component; 17. First heat - insulation component;

[0020] 2. Door panel assembly; 21. First door panel; 22. Second door panel; 23. Fifth heat - insulation component; 24. Fourth heat - insulation component; 25. Sixth heat - insulation component;

[0021] 3. Hinge; 4. Hinge shaft; 5. Wall. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be further described below in conjunction with the drawings and the detailed description of the embodiments.

[0023] As Figures 1-2As shown in the figure, an anti-thermal bridge door includes a frame assembly 1 and a door panel assembly 2 that are rotatably connected. At opposite ends of the frame assembly 1 and the door panel assembly 2, bumps are formed and the bumps of the two match each other. The frame assembly 1 includes a first door frame 11 and a second door frame 12. The first door frame 11 and the second door frame 12 are both fixed on a wall body 5. A first heat insulation assembly 17 is provided between the first door frame 11 and the second door frame 12 and the wall body 5. A second heat insulation assembly 15 is provided inside the bumps of the frame assembly 1 on the first door frame 11 and the second door frame 12. The door panel assembly 2 includes a first door panel 21 and a second door panel 22. The first door panel 21 and the second door panel 22 are fixedly connected by a fourth heat insulation assembly 24 inside the bumps of the door panel assembly 2. A fifth heat insulation assembly 23 is also filled between the first door panel 21 and the second door panel 22. A sixth heat insulation assembly 25 is provided between the second heat insulation assembly 15 and the fourth heat insulation assembly 24. Among them, the first door panel 21 and the second door panel 22 are formed by bending cold-rolled painted and stainless steel materials, and the first door panel 21 and the second door panel 22 have high strength. The first door frame 11 and the second door frame 12 are formed by bending cold-rolled painted and stainless steel materials, and the first door panel 21 and the second door panel 22 have high strength.

[0024] For the anti-thermal bridge door of this embodiment, the frame assembly 1 and the door panel assembly 2 are used. There is no metal high thermal conductivity material between the first door frame 11 and the second door frame 12, nor between the first door panel 21 and the second door panel 22. There is also no metal high thermal conductivity material connecting the frame assembly 1 and the door panel assembly 2. It has high structural strength, good anti-thermal bridge effect and sealing performance. The anti-thermal bridge door of this embodiment is installed on an air handling unit, which can effectively avoid the loss of cold and heat of the air handling unit.

[0025] As an implementable manner, the fourth heat insulation assembly 24 is a reinforcing strip. The first door panel 21 and the second door panel 22 are fixedly connected by the reinforcing strip and form a sealed space. Further, a slot is provided at one end of the reinforcing strip. The reinforcing strip can be stuck at one end of the first door panel 21 through the slot, and the other end of the reinforcing strip is fixedly connected to the second door panel 22. The fifth heat insulation assembly 23 is located in the sealed space. The upper part of the reinforcing strip is fixedly connected to the fifth heat insulation assembly 23. The sixth heat insulation assembly 25 is a sealing strip. The lower part of the reinforcing strip is fixedly connected to the sealing strip. The sealing strip is in contact with the second heat insulation assembly 15. Among them, the reinforcing strip is made of PA66 and 30GF materials and has the characteristic of high strength. The sealing strip is made of polyurethane foam (soft foam) material, which is soft and elastic after curing. The reinforcing strip makes the first door panel 21 and the second door panel 22 not in contact, and there is no metal high thermal conductivity material between the first door panel 21 and the second door panel 22. Therefore, there is no heat loss between the first door panel 21 and the second door panel 22. At the same time, the second heat insulation assembly 15 and the sealing strip make the frame assembly 1 and the door panel assembly 2 in non-metal contact.

[0026] As an implementable manner, reinforcing ribs are provided on the upper part of the reinforcing strip, and the number of the reinforcing ribs is two. The reinforcing ribs extend into the third heat insulation member and are fixedly connected thereto, that is, the reinforcing ribs extend into the PU foam and are fixedly connected thereto. The fifth heat insulation assembly 23, i.e., the PU foam (in a liquid state), is injected into the sealed space. The PU foam contacts the reinforcing ribs. Therefore, after the PU foam becomes a rigid foam, it is fixedly connected to the reinforcing ribs, and the reinforcing strip is fixedly connected to the PU foam, further enhancing the connection strength between the first door panel 21 and the second door panel 22.

[0027] As an implementable manner, glue grooves are provided on the lower part of the reinforcing strip. One ends of the glue grooves and the sealing strip are both in an inverted hook shape. One end of the sealing strip is snapped into the glue groove. The other end of the sealing strip is semicircular, and the other end of the sealing strip contacts the second heat insulation assembly 15. The number of the glue grooves and the sealing strip is two. The sealing strip (in a liquid state) is filled in the glue groove. After the sealing strip is cured, it generates adhesiveness and is fixed on the glue groove; and one end of the sealing strip can also make it stable on the glue groove. The cured sealing strip is elastic. When the sealing strip contacts the second heat insulation assembly 15, there is no metal high heat conduction material between the first door panel 21 and the second door panel 22, and the sealing performance is good.

[0028] As an implementable manner, the first heat insulation assembly 17 is a flexible cotton; the flexible cotton is set as PE foam. Specifically, one ends of the first door frame 11 and the second door frame 12 close to the wall 5 are respectively fixedly connected to both sides of the wall 5 by screws. Screw holes for the screws to pass through are provided on the first door frame 11 and the second door frame 12. The first heat insulation assembly 17 is located between one sides of the first door frame 11 and the second door frame 12 fixedly connected to the wall 5. By providing the first heat insulation assembly 17, i.e., the PE foam, the first door frame 11 and the second door frame 12 do not contact the wall 5, and there is no metal high heat conduction material between the first door frame 11 and the second door frame 12 and the wall 5. Therefore, there is no heat loss between the first door frame 11 and the second door frame 12. In this embodiment, the flexible cotton is set as PE foam; of course, it is not limited that the flexible cotton is set as PE foam, as long as the foam can prevent the first door frame 11 and the second door frame 12 from contacting the wall 5, it is within the protection scope of this embodiment. The second heat insulation assembly 15 is provided on the first door frame 11 and the second door frame 12 by an adhesive bonding method.

[0029] As an implementable manner, the second heat insulation assembly 15 is a plastic sheet, and the plastic sheet is set as a PVC sheet. The PVC sheet and the sealing strip enable non-metal contact between the frame assembly 1 and the door panel assembly 2.

[0030] As an implementable mode, the fifth heat insulation component 23 is set as one of PU foam, rock wool board, XPS board or EPS board. The fifth heat insulation component 23 can block the heat transfer between the first door panel 21 and the second door panel 22. Of course, as long as the foam board can prevent the first door panel 21 and the second door panel 22 from contacting, it is within the protection scope of this embodiment.

[0031] As an implementable mode, the convex block of the frame assembly 1 is filled with a third heat insulation component 16. Further, the third heat insulation component 16 is a wooden strip. A channel is arranged on the wooden strip, and a fixing groove 13 is arranged in the channel. One end of the countersunk head screw 14 is threadedly connected to the fixing groove 13, and the other end of the countersunk head screw 14 passes through the screw hole on the first door frame 11 and is located below the second heat insulation component 15. The fixing groove 13 can be fixed to the second door frame 12 by welding, and the wooden strip supports the first door frame 11, further enabling the stable connection between the first door frame 11 and the second door frame 12. The wooden strip also makes there be no metal high heat conduction material between the first door frame 11 and the second door frame 12. For the assembly of the first door frame 11 and the second door frame 12 in this embodiment, the countersunk head screw 14 is connected to the screw hole and the fixing groove 13, further enabling the stable connection between the first door frame 11 and the second door frame 12.

[0032] During the process of installing the first door frame 11 and the second door frame 12 of this embodiment on the wall body 5 of the air handling unit, the countersunk head screw 14 is connected to the screw hole and the fixing groove 13. At the same time, one ends of the first door frame 11 and the second door frame 12 close to the wall body 5 are respectively fixedly connected to both sides of the wall body 5 by screws.

[0033] As an implementable mode, a hinge 3 is arranged at one end of the first door frame 11 close to the wall body 5, and a hinge shaft 4 is arranged at one end of the first door frame 11 close to the first door frame 11. The hinge shaft 4 is fixedly connected to the hinge shaft of the hinge 3. The hinge shaft on the hinge 3 can rotate (this is the prior art and will not be elaborated here). When the hinge shaft rotates, it drives the hinge shaft 4 and the first door panel 21 to rotate relative to the first door frame 11, that is, the door panel assembly 2 of this embodiment can rotate relative to the frame assembly 1.

[0034] As an implementable mode, one end of the first door panel 21 close to the first door frame 11 and one end of the hinge shaft 4 are fixedly connected by bolts. The other end of the hinge shaft 4 fixedly connected to the hinge shaft is inclined. Among them, bolt holes for the bolts to pass through are arranged on both the end of the first door panel 21 close to the first door frame 11 and the hinge shaft 4.

[0035] As an implementable mode, a door handle is arranged on the first door panel 21, which facilitates the rotation of the first door panel 21. Among them, a visible window can also be arranged between the first door panel 21 and the second door panel 22.

[0036] In the installation process of the cold-bridge-proof door in this embodiment, the reinforcing strip is first snapped onto the first door panel 21, and then the second door panel 22 is covered on the first door panel 21. At this time, the reinforcing strip fixedly connects the first door panel 21 and the second door panel 22 together, and a sealed space is formed between the first door panel 21 and the second door panel 22. PU foam (in liquid state) is injected into the sealed space. After the PU foam becomes a rigid foam, it generates adhesiveness, further fixedly connecting the first door panel 21 and the second door panel 22 together. The countersunk head screw 14 is connected to the screw hole and the fixing groove 13. At the same time, one ends of the first door frame 11 and the second door frame 12 close to the wall body 5 are respectively fixedly connected to both sides of the wall body 5 through screws. Finally, the first door panel 21 and the first door frame 11 are rotatably connected through the hinge 3. When the sealing strip contacts the PVC sheet, there is no seam and no metal high-heat-conducting material between the two. Finally, the door panel assembly 2 can rotate relative to the frame assembly 1, and the door panel assembly 2 is in an open state or a closed state.

[0037] The above-described embodiments are only the preferred embodiments of the present invention, which are only used to explain the present invention and do not limit the scope of implementation of the present invention. For those skilled in the art of this technology, of course, according to the technical content disclosed in this specification, other implementation manners can be easily made by means of replacement or change. Therefore, all changes and improvements made in the principles and process conditions of the present invention should be included within the scope of the patent application of the present invention.

Claims

1. A cold bridge prevention door, characterized in that: The invention comprises a frame assembly (1) and a door panel assembly (2) which are rotatably connected, wherein the frame assembly (1) and the door panel assembly (2) have protrusions at opposite ends thereof and the protrusions of the two are matched; the frame assembly (1) comprises a first door frame (11) and a second door frame (12), wherein the first door frame (11) and the second door frame (12) are both fixed on a wall (5), and a first heat insulation assembly (17) is provided between the first door frame (11) and the second door frame (12) and the wall (5), and the first door frame (11) and the second door frame (12) are A second heat insulation component (15) is arranged on the inner side of the protrusion of the frame component (1); the door panel component (2) includes a first door panel (21) and a second door panel (22), the first door panel (21) and the second door panel (22) are fixedly connected on the inner side of the protrusion of the door panel component (2) through a fourth heat insulation component (24), and a fifth heat insulation component (23) is also filled between the first door panel (21) and the second door panel (22); and a sixth heat insulation component (25) is arranged between the second heat insulation component (15) and the fourth heat insulation component (24).

2. The cold bridge prevention door according to claim 1, characterized in that: The fourth thermal insulation component (24) is a reinforcement strip, the first door panel (21) and the second door panel (22) are fixedly connected via the reinforcement strip to form a sealed space, the fifth thermal insulation component (23) is located in the sealed space, the upper portion of the reinforcement strip is fixedly connected to the fifth thermal insulation component (23), the sixth thermal insulation component (25) is a sealing strip, the lower portion of the reinforcement strip is fixedly connected to the sealing strip, and the sealing strip is in contact with the second thermal insulation component (15).

3. The cold bridge prevention door according to claim 2, characterized in that: The upper part of the reinforcing strip is provided with reinforcing ribs, which extend into the fifth thermal insulation component (23) and are fixedly connected thereto; the lower part of the reinforcing strip is provided with a glue groove, and one end of the glue groove and the sealing strip are both barb-shaped, one end of the sealing strip is inserted into the glue groove, and the other end of the sealing strip is semicircular, and the other end of the sealing strip is in contact with the second thermal insulation component (15).

4. The anti-cold bridge door according to claim 1, characterized in that: The first heat insulation component (17) is flexible cotton.

5. The cold bridge prevention door according to claim 4, characterized in that: The flexible cotton is PE foam cotton.

6. The cold bridge prevention door according to any one of claims 1 to 5, characterized in that: The second thermal insulation component (15) is a plastic sheet, and the fifth thermal insulation component (23) is configured to be one of PU foam, rock wool board, XPS board or EPS board.

7. The cold bridge prevention door according to claim 1, characterized in that: The protrusion of the frame assembly (1) is filled with a third heat insulation assembly (16).

8. The cold bridge prevention door according to claim 7, characterized in that: The third heat insulation component (16) is a wooden strip, a channel is provided on the wooden strip, a fixing groove (13) is provided in the channel, the fixing groove (13) is threadedly connected to one end of a countersunk screw (14), and the other end of the countersunk screw (14) passes through a screw hole on the first door frame (11) and is located below the second heat insulation component (15).

9. The cold bridge prevention door according to claim 1, characterized in that: A hinge (3) is arranged at one end of the first door frame (11) close to the wall (5), and a hinge shaft (4) is arranged at one end of the first door frame (11) close to the first door frame (11), wherein the hinge shaft (4) is fixedly connected to the hinge shaft of the hinge (3).

10. The cold bridge prevention door according to claim 9, characterized in that: One end of the first door panel (21) close to the first door frame (11) and one end of the hinge shaft (4) are fixedly connected by bolts, and the other end of the hinge shaft (4) fixedly connected to the hinge shaft is arranged in an inclined manner.

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