High-temperature-resistant composite polyurethane thermal insulation panel

Abstract

The utility model discloses a high-temperature-resistant composite polyurethane heat preservation panel which comprises an outer side plate, and the outer side plate is provided with a filling cavity. The polyurethane heat preservation layer is arranged in the filling cavity; the number of the reinforcing frames is two, and the reinforcing frames are arranged on the two sides of the polyurethane heat preservation layer respectively. The inner side plate is arranged in the opening direction of the filling cavity; high-temperature-resistant ceramic fiber paper for sealing the filling cavity is arranged on the outer side plate; and the inner side plate is not in contact with the outer side plate. The high-temperature-resistant ceramic fiber paper blocks heat transfer between the inner side plate and the outer side plate, and heat loss is reduced. And the high-temperature-resistant ceramic fiber paper also prevents the heat from being transferred to the polyurethane heat-insulating layer, so that the heat-insulating panel containing the polyurethane heat-insulating layer has higher temperature resistance. The edge stress area of the polyurethane heat preservation layer is increased through the reinforcing frame, and the service life of the heat preservation panel is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of dehumidifiers, and in particular relates to a high-temperature resistant composite polyurethane insulation panel. Background Art

[0002] When rotary dehumidifier units and constant temperature and humidity units are used in food, pharmaceutical, chemical and other fields, there are often process requirements for high-temperature 130℃ air supply heating; the regeneration heating temperature of rotary dehumidifiers is usually at a high temperature of 120-130℃ when in use; conventional dehumidifier units, air-conditioning units, and constant temperature and humidity units use polyurethane insulation panels, and the high temperature that the polyurethane insulation layer can withstand for a long time is ≤60℃, and the temperature that it can withstand for a short time is ≤80℃, so the polyurethane insulation layer cannot be directly used to make the equipment panel. At present, in order to solve this high-temperature resistant working condition, most equipment is generally made of rock wool filling to make the insulation layer.

[0003] The Chinese patent document with publication number CN207962978U discloses a regenerative insulation mechanism for a dehumidifier and its insulation box, the regenerative insulation mechanism includes a mounting structure, and a high-temperature resistant foam layer, a middle insulation layer and a rock wool layer arranged in the mounting structure from top to bottom. The mounting structure includes an upper cover plate, a lower cover plate, four side plates and four side plate connecting pieces. The four side plates are perpendicular to each other to form a square structure and are connected between the upper cover plate and the lower cover plate. The four side plate connecting pieces are arranged at the connection between any two side plates. The side plate connecting pieces include a first connecting piece, a second connecting piece and two side connecting pieces. The first connecting piece and the second connecting piece are perpendicular to each other to form a right-angle structure. The two side connecting pieces are connected between the first connecting piece and the second connecting piece.

[0004] The regenerative heat insulation mechanism in the above technical solution has the problems of poor thermal insulation performance, high environmental pollution, and high cost. The main reason for the poor thermal insulation performance is that the mounting structure is a steel plate, and the metal heat conduction of the steel plates on both sides causes the heat on one side to be conducted to the steel plate on the other side through the vertical edge metal. The main reason for the high environmental pollution is that a large amount of glass fiber powder will be generated when filling rock wool, which will cause serious air pollution and affect the health of the operators. The high cost is reflected in the fact that since the rock wool is in a loose state inside the mounting structure, sufficient support strength can only be achieved by thickening the steel plate during manufacturing, which increases the manufacturing cost and the overall thickness. In order to solve the above-mentioned technical problems of poor thermal insulation performance and the need for sufficient support strength, a high-temperature resistant foam layer and an intermediate insulation layer are added when manufacturing the regenerative heat insulation mechanism. Therefore, the structure of the regenerative heat insulation mechanism is complicated, and the manufacturing cost is further increased. Utility Model Content

[0005] In order to overcome the above-mentioned problems caused by the use of rock wool in the thermal insulation panels of dehumidifiers in the prior art, although the use of polyurethane can avoid the above-mentioned problems, it does not have sufficient high-temperature resistance. One purpose of the utility model is to provide a high-temperature resistant composite polyurethane insulation panel. By arranging high-temperature resistant ceramic fiber paper between the inner plate and the outer plate for installing and fixing the polyurethane insulation layer, the heat received by the polyurethane insulation layer is reduced while the heat transfer between the inner plate and the outer plate is reduced, so that the polyurethane insulation layer can meet the needs of high-temperature air supply heating.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-temperature resistant composite polyurethane insulation panel, comprising an outer plate, the outer plate is provided with folded edges around it, and the folded edges and the outer plate form a filling cavity; a polyurethane insulation layer, the polyurethane insulation layer is arranged in the filling cavity; a reinforcement frame, the reinforcement frame has two, and is respectively arranged on both sides of the polyurethane insulation layer; an inner plate, the inner plate is arranged in the opening direction of the filling cavity; wherein, the outer plate is provided with high-temperature resistant ceramic fiber paper for closing the filling cavity; the inner plate is arranged on the side of the high-temperature resistant ceramic fiber paper away from the filling cavity; the inner plate does not contact the outer plate.

[0007] Furthermore, the thickness of the polyurethane insulation layer is greater than or equal to four times the thickness of the high-temperature resistant ceramic fiber paper.

[0008] Preferably, the thickness of the high-temperature resistant ceramic fiber paper is 5 mm; the thickness of the polyurethane insulation layer is 20 mm.

[0009] The high-temperature resistant ceramic fiber paper is an existing product that can be purchased. Its main component is aluminum silicate fiber, so it has heat resistance above 1000°C and extremely low thermal conductivity. The high-temperature resistant ceramic fiber paper isolates the outer panel and the polyurethane insulation layer outside the air supply hot zone, so that the polyurethane insulation layer is within a suitable temperature range and provides thermal insulation performance. At the same time, the inner panel and the outer panel are not in contact, which also blocks heat transfer and improves thermal insulation performance.

[0010] Furthermore, the reinforcement frame is composed of a plurality of reinforcement ribs connected end to end in sequence; the outer contour of the reinforcement frame is the same as the outer contour of the polyurethane insulation layer.

[0011] The reinforcement frame increases the stress-bearing area of ​​the polyurethane thermal insulation layer and prevents the outer edge of the polyurethane thermal insulation layer from being deformed and damaged under the action of concentrated pressure.

[0012] Specifically, the width of the reinforcing rib is greater than or equal to the thickness of the polyurethane insulation layer.

[0013] Furthermore, the folding edge includes a primary bend set at ninety degrees at the edge of the outer plate and a secondary bend set at ninety degrees at the end of the primary bend; the secondary bend is bent toward the middle of the outer plate; the reinforcement frame is arranged between the secondary bend and the outer plate.

[0014] Furthermore, screws are provided on the outer plate; the screws sequentially pass through the outer plate, one of the reinforcement frames, the polyurethane insulation layer, another reinforcement frame, the secondary bend, and the high-temperature resistant ceramic fiber paper.

[0015] Compared with the conventional welding method, the setting of the screws also increases flexibility, and the filling therein can be adjusted after assembly.

[0016] Preferably, the high temperature resistant ceramic fiber paper has multiple layers; the outer edge of the high temperature resistant ceramic fiber paper is compressed so that the middle of the high temperature resistant ceramic fiber paper has a bulge; the bulge is located in the filling cavity.

[0017] The interior of the thermal insulation panel has no cavity and is completely filled, thereby ensuring the thermal insulation effect while preventing dirt from being accumulated inside.

[0018] Furthermore, the thickness of the inner plate is equal to the thickness of the outer plate; the thickness of the reinforcement frame is greater than the thickness of the inner plate.

[0019] Specifically, the thickness of the inner plate and the thickness of the outer plate are 0.5 mm; the thickness of the reinforcement frame is 2 mm.

[0020] Under the premise of ensuring sufficient thermal insulation effect, since the polyurethane insulation layer is in plate shape and the commonly used rock wool is loose, the thickness of the metal plate can be greatly reduced, that is, the thickness and weight of the insulation panel are reduced.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The inner panel, high-temperature resistant ceramic fiber paper, outer panel and polyurethane insulation layer are arranged in sequence; the high-temperature resistant ceramic fiber paper blocks the heat transfer between the inner panel and the outer panel, reduces heat loss, and thus improves the insulation effect.

[0023] 2. High temperature resistant ceramic fiber paper also blocks the transfer of heat to the polyurethane insulation layer, making the insulation panel containing the polyurethane insulation layer have higher temperature resistance and avoiding the use of rock wool with disadvantages such as high pollution as the insulation core.

[0024] 3. The reinforcement frame increases the stress-bearing area of ​​the edge of the polyurethane insulation layer. During assembly and use, it can prevent the edge of the polyurethane insulation layer from being damaged or missing due to stress concentration, thereby extending the service life of the insulation panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the utility model;

[0026] Figure 2 It is a partial enlarged view of the utility model;

[0027] Figure 3 This is a schematic diagram of the exploded structure of the present invention.

[0028] In the figure: 1. Inner panel; 2. Outer panel; 21. Filling cavity; 221. Primary bend; 222. Secondary bend; 3. Polyurethane insulation layer; 4. High-temperature resistant ceramic fiber paper; 5. Reinforcing ribs. DETAILED DESCRIPTION

[0029] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly refer to one or more of these features. In the description of this utility model, "several" means two or more, unless otherwise specifically defined.

[0032] In this utility model, unless otherwise specified or limited, terms such as "disposed" and "installed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection; direct connection, connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0033] See also Figure 1-Figure 3 , a high-temperature resistant composite polyurethane insulation panel, characterized in that: it includes an outer plate 2, the outer plate 2 is provided with folded edges around it, and the folded edges and the outer plate 2 form a filling cavity 21; a polyurethane insulation layer 3, the polyurethane insulation layer 3 is arranged in the filling cavity 21; a reinforcement frame, the reinforcement frame has two, and is respectively arranged on both sides of the polyurethane insulation layer 3; an inner plate 1, the inner plate 1 is arranged in the opening direction of the filling cavity 21; high-temperature resistant ceramic fiber paper 4, the high-temperature resistant ceramic fiber paper 4 is arranged between the inner plate 1 and the outer plate 2, the high-temperature resistant ceramic fiber paper closes the filling cavity 21, and the two ends are respectively pressed against the inner plate 1 and the outer plate 2, and the inner plate 1 does not contact the outer plate 2.

[0034] The thickness of the polyurethane insulation layer 3 is greater than or equal to four times the thickness of the high-temperature resistant ceramic fiber paper 4; the thickness of the high-temperature resistant ceramic fiber paper 4 is 5 mm; the thickness of the polyurethane insulation layer 3 is 20 mm.

[0035] The reinforcement frame is composed of a plurality of reinforcement ribs 5 connected end to end in sequence; the outer contour of the reinforcement frame is the same as the outer contour of the polyurethane insulation layer 3; the width of the reinforcement ribs 5 is greater than or equal to the thickness of the polyurethane insulation layer 3.

[0036] The folding edge includes a primary bend 221 set at ninety degrees at the edge of the outer panel 2 and a secondary bend 222 set at ninety degrees at the end of the primary bend 221; the secondary bend 222 is bent toward the middle of the outer panel 2; the reinforcement frame is arranged between the secondary bend 222 and the outer panel 2.

[0037] The outer plate 2 is provided with screws; the screws sequentially pass through the outer plate 2, the reinforcing ribs 5, the polyurethane insulation layer 3, the reinforcing ribs 5, the secondary bend 222, and the high-temperature resistant ceramic fiber paper 4.

[0038] The high temperature resistant ceramic fiber paper 4 has multiple layers; the outer edge of the high temperature resistant ceramic fiber paper 4 is compressed so that the middle of the high temperature resistant ceramic fiber paper 4 has a bulge; the bulge is located in the filling cavity 21.

[0039] The thickness of the inner panel 1 is equal to the thickness of the outer panel 2; the thickness of the reinforcing rib 5 is greater than the thickness of the inner panel 1; the thickness of the inner panel 1 and the thickness of the outer panel 2 are 0.5 mm; the thickness of the reinforcing rib 5 is 2 mm.

[0040] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in this field within the scope of the present invention are included in the patent scope of the present invention.

Claims

1. A high temperature resistant composite polyurethane insulation panel, characterized by: The outer plate comprises an outer plate, the outer plate is provided with folded edges around the outer plate, the folded edges and the outer plate form a filling cavity; a polyurethane insulation layer, the polyurethane insulation layer is provided in the filling cavity; Reinforcement frames, two of which are respectively arranged on both sides of the polyurethane insulation layer; an inner plate, the inner plate being arranged in the opening direction of the filling cavity; Wherein, the outer plate is provided with high-temperature resistant ceramic fiber paper for sealing the filling cavity; the inner plate is provided on the side of the high-temperature resistant ceramic fiber paper away from the filling cavity; the inner plate is not in contact with the outer plate.

2. The thermal insulation panel according to claim 1, wherein: The thickness of the polyurethane insulation layer is greater than or equal to four times the thickness of the high-temperature resistant ceramic fiber paper.

3. The thermal insulation panel according to claim 2, wherein: The thickness of the high-temperature resistant ceramic fiber paper is 5 mm; the thickness of the polyurethane insulation layer is 20 mm.

4. The thermal insulation panel according to any one of claims 1 to 3, characterized in that: The reinforcement frame is composed of a plurality of reinforcement ribs connected end to end in sequence; the outer contour of the reinforcement frame is the same as the outer contour of the polyurethane insulation layer.

5. The thermal insulation panel according to claim 4, wherein: The width of the reinforcing rib is greater than or equal to the thickness of the polyurethane insulation layer.

6. The thermal insulation panel according to any one of claims 1 to 3, characterized in that: The folding edge includes a primary bend set at 90 degrees at the edge of the outer plate and a secondary bend set at 90 degrees at the end of the primary bend; the secondary bend is bent toward the middle of the outer plate; the reinforcement frame is arranged between the secondary bend and the outer plate.

7. The thermal insulation panel according to any one of claims 1 to 3, characterized in that: The high temperature resistant ceramic fiber paper has multiple layers; the outer edge of the high temperature resistant ceramic fiber paper is compressed so that the middle portion of the high temperature resistant ceramic fiber paper has a bulge; the bulge is located in the filling cavity.

8. The thermal insulation panel according to any one of claims 1 to 3, characterized in that: The thickness of the inner plate is equal to that of the outer plate; the thickness of the reinforcement frame is greater than that of the inner plate.

9. The thermal insulation panel according to claim 8, wherein: The thickness of the inner plate and the outer plate is 0.5 mm; the thickness of the reinforcement frame is 2 mm.

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