High-efficiency cold and heat decorative sandwich panel

Abstract

The present invention discloses an efficient hot and cold decorative sandwich panel, which comprises a rigid panel and a bottom plate. The edges of the panel and the bottom plate are in contact and fixed to each other, forming a hollow molding cavity in the middle. A graphite pressing plate is arranged in the molding cavity, and a heat exchange tube is arranged at the fitting position of the graphite pressing plate and the bottom plate. At the same time, a manufacturing method of such an efficient hot and cold decorative sandwich panel is provided. In the present invention, a prefabricated expanded graphite plate is directly placed between the bottom plate and the panel for pressing and forming, without the need for an additional mold. After pressing, there is no need for demolding, and the pressed graphite pressing plate is directly pressed and fixed in the molding cavity as a heat conduction and heat equalization layer. The structure of the present invention is simple, the process is concise, it is easy to operate and process, the cost is low, and it can be applied to the inner top surface, wall surface and ground of a building. The top surface can be directly pasted under the building concrete roof slab or fixed to the keel by bolts. The wall surface can be directly fixed to the wall surface through anchor fittings, and the ground can be directly laid, which is suitable for popularization and application.

Description

Technical Field

[0001] The present invention relates to the technical field of heating, mainly to the technical field of the terminal device of the air-conditioning system, and particularly to an efficient cold and hot decorative sandwich panel. Background Art

[0002] With the continuous development of the social economy, people's requirements for indoor comfort are constantly increasing, and the radiant air-conditioning system is becoming more and more popular. As a device directly related to indoor comfort, the heat exchange terminal of the air conditioner has attracted more and more attention.

[0003] The invention patent with the authorization announcement number CN104193290 discloses "a method for preparing an expanded graphite plate for a radiant ceiling and its ceiling plate", but this kind of plate needs to be demolded after being pressed into a graphite plate, and then compounded with other bottom plates and panels before it can be used. The process is complicated and the mold cost is increased. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides an efficient cold and hot decorative sandwich panel.

[0005] The technical solution adopted by the present invention is as follows: An efficient cold and hot decorative sandwich panel, characterized in that: it includes a rigid panel and a bottom plate, the edges of the panel and the bottom plate are in contact with each other, and a hollow molding cavity is formed in the middle. The molding cavity is a graphite pressing plate, and a heat exchange tube is provided at the fitting position between the graphite pressing plate and the bottom plate.

[0006] Preferably, the inside of the bottom plate is hollow and is a box frame structure composed of a bottom surface and surrounding side edges; the panel is adapted to the bottom plate and can be snapped into the hollow part of the bottom plate.

[0007] Preferably, the panel is a rectangular body adapted to the hollow part of the bottom plate.

[0008] Preferably, the longitudinal section of the panel is in a "T" shape, and the smaller-width part below the panel is adapted to the hollow part of the bottom plate.

[0009] Preferably, the heat exchange tube is pre-positioned and connected to the bottom plate.

[0010] Preferably, the heat exchange tube is fixed on the bottom plate by adhesive or clamp, or a groove adapted to the heat exchange tube is provided on the bottom plate.

[0011] Preferably, the panel and the bottom plate are gypsum boards or cement fiber boards.

[0012] A preparation method of an efficient cold and hot decorative sandwich panel includes the following steps:

[0013] Step 1) Press the expanded graphite powder into an expanded graphite plate and cut it according to a predetermined size;

[0014] Step 2) Prepare the bottom plate and the panel, and fix and position the heat exchange tubes on the bottom plate.

[0015] Step 3) Place the expanded graphite plate into the hollow part of the bottom plate, and cover the panel.

[0016] Step 4) By pressing on the panel, press the expanded graphite plate into a graphite pressed plate, and the graphite pressed plate is tightly pressed in the molding cavity.

[0017] Step 5) Fix the opposite edges of the bottom plate and the panel.

[0018] Preferably, in Step 4), baffles are fixedly arranged on both side edges of the bottom plate, and the baffles are detachable; press on the panel to make the panel snap into the hollow part of the bottom plate, thereby pressing the expanded graphite plate into a graphite pressed plate, and the graphite pressed plate is tightly pressed in the molding cavity, and then remove the baffles.

[0019] Preferably, in Step 1), the expanded graphite powder is 300 - 400 mesh, the pressure during pressing is 0.05 - 0.2 Mpa, and the density of the pressed expanded graphite plate is 0.05 - 0.1 g / cm3; in Step 4), the pressure during pressing is 0.8 - 1.0 Mpa, and the density of the pressed graphite pressed plate is 0.15 - 0.3 g / cm3; in Step 5), the bottom plate and the panel can be tightly fixed by mechanical connection means such as bolt connection or rivet connection.

[0020] In the present invention, the prefabricated expanded graphite plate is directly placed between the bottom plate and the panel for pressing and forming, without the need for an additional mold, and there is no need for demolding after pressing. The pressed graphite pressed plate is directly tightly pressed in the molding cavity as a heat conduction and heat equalizing layer. The present invention has a simple structure, a simple process, is easy to operate and process, has a low cost, and can be applied to the interior top surface, wall surface and ground of a building. The top surface can be directly pasted under the building concrete roof slab or fixed to the keel by bolts. The wall surface can be directly fixed to the wall surface through anchor fittings, and the ground can be directly laid, which is suitable for popularization and application. Description of the Drawings

[0021] Figure 1 is a schematic diagram of Embodiment 1 of the present invention;

[0022] Figure 2 is an exploded schematic diagram of Embodiment 1 of the present invention;

[0023] Figure 3 is along Figure 1 in the present invention in the cross-sectional view in the A - A direction;

[0024] Figure 4 is a cross-sectional schematic diagram of the installation process of Embodiment 1 of the present invention;

[0025] Figure 5It is a schematic diagram of the second embodiment of the present invention;

[0026] Figure 6 It is an exploded schematic diagram of the second embodiment of the present invention;

[0027] Figure 7 It is along the Figure 5 in the second embodiment of the present invention, the cross-sectional view in the B-B direction;

[0028] Figure 8 It is a schematic cross-sectional view of the installation process of the second embodiment of the present invention;

[0029] Base plate 1, graphite pressing plate 2, panel 3, heat exchange tube 4, expanded graphite plate 5, baffle 6. Detailed implementation manners

[0030] The present invention will be further described below in conjunction with the drawings and embodiments.

[0031] In the embodiment, as Figure 1 and 5 shown, a high-efficiency cold and hot decorative sandwich panel includes a rigid panel 3 and a base plate 1. The edges of the panel 3 and the base plate 1 are in contact with each other, and a hollow molding cavity is formed in the middle. The graphite pressing plate 2 is arranged in the molding cavity, and a heat exchange tube 4 is arranged at the fitting position of the graphite pressing plate 2 and the base plate 1. In this embodiment, the panel 3 and the base plate 1 directly form the molding cavity for accommodating the graphite pressing plate 2. During production, the expanded graphite plate 5 can be directly pressed into the graphite pressing plate 2 in the molding cavity without other molds, and the demolding process is also omitted, which is convenient and simple and saves costs; the structure of this embodiment is simple, the process is simple, it is easy to operate and process, and the cost is low; the finished sandwich panel has high strength, generally between 250 MPA and 350 MPA, and can be applied to the inner top surface, wall surface and ground of a building. The top surface can be directly pasted under the building concrete roof slab, or can be fixed to the keel by bolts. The wall surface can be directly fixed to the wall surface through anchor fittings, and the ground can be directly laid, which is suitable for popularization and application.

[0032] In the embodiment, as Figure 2 shown, the base plate 1 is hollow inside and is a box frame structure composed of a bottom surface and surrounding side edges; the panel 3 is adapted to the base plate 1 and can be snapped into the hollow part of the base plate 1. Usually, in the first embodiment, as Figure 2-4 shown, the panel 3 is a rectangular body adapted to the hollow part of the base plate 1 and can be directly snapped into the hollow part of the base plate 1, and then the side edges of the base plate 1 and the panel 3 are fixed. Gluing, bolts or rivets can be used for fixed connection; in the second embodiment, as Figure 5-8 shown, the longitudinal section of the panel 3 is in a "T" shape. The part with a smaller width below the panel 3 is adapted to the hollow part of the base plate 1 and can be snapped into the hollow part of the base plate 1, while the part with a larger width above the panel 3 is exposed outside the hollow part. This structure facilitates the fixation of the side edges of the panel 3 and the base plate 1.

[0033] In the embodiment, as Figure 4 shown, during pressing, if the thickness of the expanded graphite plate 5 is higher than the height of the side of the panel 3, the baffle plates 6 installed on both sides of the bottom plate 1 are required; as Figure 4 shown, the inner arm of the baffle plate 6 should be flush with the inner wall of the side of the bottom plate 1, and the baffle plate 6 can be of L shape, which is convenient for fixing on the side of the bottom plate 1; the expanded graphite plate 5 is placed into the hollow part of the bottom plate 1, and then the panel 3 is placed on the expanded graphite plate 5, that is, in the middle of the two baffle plates 6, and pressure is applied to the panel 3. The expanded graphite plate 5 is pressed into the graphite pressing plate 2 under the action of pressure. The baffle plate 6 can prevent the situation that the expanded graphite is exposed due to the collapse of the expanded graphite plate 5 during the whole pressing process. In the embodiment, as Figure 8 shown, if the thickness of the expanded graphite plate 5 is equal to or lower than the height of the side of the panel 3, the baffle plate 6 is not required. After the expanded graphite plate 5 is placed into the hollow part, the panel 3 can be placed, and then directly pressed.

[0034] In the embodiment, in order that the heat exchange tube 4 does not deviate during pressing of the sandwich panel, the heat exchange tube 4 can be pre-positioned and connected with the bottom plate 1 in advance. Usually, the heat exchange tube 4 can be adhered to the bottom plate 1 through an adhesive, or can also be fixed on the bottom plate 1 with a clamp, etc.; these two methods are relatively simple to operate, and after pressing, the whole heat exchange tube 4 is immersed in the graphite pressing plate 2, and the heat conduction efficiency is higher. In the embodiment, a groove adapted to the heat exchange tube 4 can also be pre-opened on the bottom plate 1 in advance. The depth of the groove should be less than the radius of the heat exchange tube 4. The heat exchange tube 4 can be positioned by being placed in the groove. Positioning with this structure does not require other auxiliary materials, and the positioning is accurate and not easy to move. In the embodiment, usually the heat exchange tube 4 is a metal pipe or a cross-linked pipe with a pipe diameter of 10 - 16 mm. The graphite pressing plate 2 evenly transfers the cold and heat brought by the heat exchange tube 4, and then dissipates heat through the surface of the sandwich panel, and the indoor temperature can be adjusted.

[0035] In the embodiment, the panel 3 and the bottom plate 1 are gypsum boards or cement fiber boards. The gypsum board or the cement fiber board has relatively high hardness, can play a good pressing effect during pressing and is not easy to deform. In the embodiment, in order to achieve better heat insulation performance and prevent heat loss, a heat insulation board can also be compounded on one side of the sandwich panel facing the exterior wall.

[0036] In the embodiment, the preparation method of the high-efficiency cold and hot decorative sandwich panel may include the following steps:

[0037] Step 1) Press the expanded graphite powder into the expanded graphite plate 5;

[0038] Step 2) Prepare the bottom plate 1 and the panel 3, and position and fix the heat exchange tube 4 on the bottom plate 1;

[0039] Step 3) Place the expanded graphite plate 5 into the hollow part of the bottom plate 1, and cover the top plate 3.

[0040] Step 4) By applying pressure to the top plate 3, press the expanded graphite plate 5 into a graphite pressed plate 2, and the graphite pressed plate 2 is pressed tightly in the molding cavity.

[0041] Step 5) Fix the opposite edges of the bottom plate 1 and the top plate 3.

[0042] This method directly places the prefabricated expanded graphite plate 5 between the bottom plate 1 and the top plate 3 for pressing and forming, without the need for additional molds. After pressing, there is no need for demolding, and the pressed graphite pressed plate 2 is directly pressed tightly in the molding cavity as a heat-conducting and heat-smoothing layer.

[0043] In the embodiment, as Figure 4 shown, Step 4) is to fixedly arrange baffles 6 on both side edges of the bottom plate 1, and the baffles 6 are detachable; apply pressure to the top plate 3 to make the top plate 3 snap into the hollow part of the bottom plate 1, thereby pressing the expanded graphite plate 5 into a graphite pressed plate 2, and the graphite pressed plate 2 is pressed tightly in the molding cavity, and then remove the baffles 6.

[0044] In the embodiment, specifically, this method:

[0045] In Step 1), the expanded graphite powder is 300 - 400 mesh, the pressure during pressing is 0.05 - 0.2 Mpa, and the density of the pressed expanded graphite plate is 0.05 - 0.1 g / cm3.

[0046] In Step 4), the pressure during pressing is 0.8 - 1.0 Mpa, and the density of the pressed graphite pressed plate is 0.15 - 0.3 g / cm3; the horizontal direction thermal conductivity of the pressed graphite pressed plate is not less than 25 W / m·K, and the vertical direction thermal conductivity is not less than 10 W / m·K.

[0047] In Step 5), the bottom plate 1 and the top plate 3 can be firmly fixed by mechanical connection methods such as bolt connection or rivet connection; as Figure 5-8 shown, in the second embodiment, the top plate 3 with a "T" - shaped cross - section is more convenient for fixing both sides of the bottom plate 1 and the top plate 3. Obviously, the above - mentioned embodiments of the present invention are only examples for explaining the present invention, rather than limitations on the implementation manners of the present invention. Obvious changes or variations derived from the essential spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. A preparation method of an efficient cold and hot decorative sandwich panel, characterized in that: it includes the following steps: Step 1) Press expanded graphite powder into an expanded graphite plate (5) and cut it according to a predetermined size; Step 2) Prepare a bottom plate (1) and a panel (3), and fix and position a heat exchange tube (4) on the bottom plate (1); Step 3) Place the expanded graphite plate (5) into the hollow part of the bottom plate (1), and cover the panel (3); Step 4) By applying pressure to the panel (3), press the expanded graphite plate (5) into a graphite pressed plate (2), and the graphite pressed plate (2) is pressed tightly in the molding cavity; Step 5) Fix the opposite edges of the bottom plate (1) and the panel (3).

2. The preparation method of the efficient cold and hot decorative sandwich panel according to claim 1, characterized in that: Step 4) is to fixedly arrange baffles (6) on both side edges of the bottom plate (1), and the baffles (6) are detachable; apply pressure to the panel (3) so that the panel (3) is clamped into the hollow part of the bottom plate (1), thereby pressing the expanded graphite plate (5) into a graphite pressed plate (2), and the graphite pressed plate (2) is pressed tightly in the molding cavity, and then remove the baffles (6).

3. The preparation method of the efficient cold and hot decorative sandwich panel according to claim 1, characterized in that: The expanded graphite powder described in step 1) is 300-400 mesh, the pressure during pressing is 0.05-0.2 Mpa, and the density of the pressed expanded graphite plate (5) is 0.05-0.1 g / cm 3 ; In step 4), the pressure during pressing is 0.8 - 1.0 Mpa, and the density of the pressed graphite pressing plate (2) is 0.15 - 0.3 g / cm 3 ; in Step 5), the bottom plate (1) and the panel (3) can be tightly fixed by bolt connection or rivet connection.

4. An efficient cold and hot decorative sandwich panel prepared by the preparation method of the efficient cold and hot decorative sandwich panel according to any one of claims 1 to 3, characterized in that: it includes a rigid panel (3) and a bottom plate (1), the edges of the panel (3) and the bottom plate (1) are in contact with each other, a hollow molding cavity is formed in the middle, a graphite pressed plate (2) is arranged in the molding cavity, and a heat exchange tube (4) is arranged at the fitting position of the graphite pressed plate (2) and the bottom plate (1).

5. The efficient cold and hot decorative sandwich panel according to claim 4, characterized in that: the inside of the bottom plate (1) is hollow, and it is a box frame structure composed of a bottom surface and surrounding side edges; the panel (3) is adapted to the bottom plate (1) and can be clamped into the hollow part of the bottom plate (1).

6. The efficient cold and hot decorative sandwich panel according to claim 5, characterized in that: the panel (3) is a rectangular body adapted to the hollow part of the bottom plate (1).

7. The efficient cold and hot decorative sandwich panel according to claim 5, characterized in that: the longitudinal section of the panel (3) is in a "T" shape, and the part with a smaller width below the panel (3) is adapted to the hollow part of the bottom plate (1).

8. An efficient cold and hot decorative sandwich panel according to claim 4, characterized in that: the heat exchange tube (4) is pre-positioned and connected to the bottom plate (1).

9. The efficient cold and hot decorative sandwich panel according to claim 8, characterized in that: the heat exchange tube (4) is fixed on the bottom plate (1) by adhesives or clamps, or grooves adapted to the heat exchange tube (4) are provided on the bottom plate (1).

10. An efficient cold and hot decorative sandwich panel according to claim 4, characterized in that: the panel (3) and the bottom plate (1) are gypsum boards or cement fiber boards.

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