Heat insulation door

Abstract

The utility model relates to the technical field of door bodies, in particular to a heat insulation door. The heat insulation door comprises a door plate body and a door frame, the door plate body comprises a first outer plate, a door core plate and a second outer plate, the first outer plate is arranged on one side of the door core plate, the second outer plate is arranged on the other side of the door core plate, the side, facing the first outer plate, of the door core plate is sprayed with a first heat-resistant coating, and the side, facing the second outer plate, of the door core plate is sprayed with a second heat-resistant coating. The door frame is provided with a mounting groove, an opening of the mounting groove faces the second outer plate, the mounting groove is provided with a first sealing piece, and the door plate body abuts against the door frame in a sealed mode through the first sealing piece. According to the heat insulation door, the heat insulation performance of the heat insulation door is guaranteed, meanwhile, the indoor environment is prevented from making contact with the outdoor environment through the gap between the door plate body and the door frame, the matched heat insulation effect between the door plate body and the door frame is enhanced, and then the heat preservation effect of the door plate body on the indoor environment is effectively enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of door bodies, in particular to an insulation door. Background Art

[0002] At present, the standard requirements for aluminum-wood fireproof entrance doors do not have high requirements for thermal insulation performance, and the thermal insulation coefficient K value is above 2.0, or even higher, or no attention is paid. However, with the development of society and the improvement of living standards, the requirements and quality of living environment are getting higher and higher, and energy saving, environmental protection, green and low carbon have become the mainstream. Therefore, the requirements for thermal insulation performance of entrance doors in China have become more and more important, especially in cold and severe areas, the thermal insulation performance of entrance doors has been paid more and more attention.

[0003] Cold areas need heating in winter, and currently more attention is paid to thermal insulation of walls and floors. However, the thermal insulation performance of the entrance door and the coordinated insulation effect between the door panel and door frame of the entrance door do not meet the construction requirements of cold areas. Utility Model Content

[0004] In order to solve the defects of the prior art, the utility model provides an insulation door, which ensures the thermal insulation performance of the insulation door while preventing the indoor environment from contacting the outdoor environment through the gap between the door panel body and the door frame, thereby enhancing the coordinated thermal insulation effect between the door panel body and the door frame, and further effectively enhancing the thermal insulation effect of the door panel body on the indoor environment.

[0005] In order to solve the above technical problems, the utility model provides an insulation door, comprising a door panel body and a door frame, wherein one side of the door panel body is rotatably connected to the door frame through a rotating hinge;

[0006] The door panel body comprises a first outer panel, a door core panel and a second outer panel, wherein the first outer panel is arranged on one side of the door core panel, and the second outer panel is arranged on the other side of the door core panel, a first heat-resistant coating is sprayed on a side of the door core panel facing the first outer panel, and a second heat-resistant coating is sprayed on a side of the door core panel facing the second outer panel, and the interior of the door core panel is filled with perlite;

[0007] The door frame is provided with a mounting groove, the opening of the mounting groove faces the second outer panel, the mounting groove is provided with a first sealing member, and the door panel body is in sealing contact with the door frame through the first sealing member.

[0008] Wherein, the thickness of the first heat-resistant coating and the second heat-resistant coating are both 2mm-4mm, and the thickness of the perlite in the door core panel is 25-30mm.

[0009] Wherein, the door panel body also includes a fireproof board, and the fireproof board is arranged between the door core board and the first outer board, and the thickness of the fireproof board is 2mm-4mm.

[0010] The first outer panel is an etched aluminum panel, the second outer panel is a medium-density fiberboard, the thickness of the second outer panel is greater than the thickness of the first outer panel, the edge of the first outer panel is covered with a heat-resistant tape, and the edge of the second outer panel is covered with a heat-resistant tape.

[0011] Wherein, a heat-insulating veneer is attached to a side of the second outer panel facing away from the door core panel, and the thickness of the heat-insulating veneer is 0.5mm-1mm.

[0012] Wherein, the door core board comprises a door core and two door panels, wherein one of the door panels is arranged on the side of the door core facing the first outer panel, and the other door panel is arranged on the side of the door core facing the second outer panel, and the door core is provided with an inner frame, and the inner frame and the two door panels are arranged to form a filling cavity, and the filling cavity is used to fill perlite;

[0013] The first heat-resistant coating is sprayed on a side of one of the door panels facing the first outer panel, and the second heat-resistant coating is sprayed on a side of the other door panel facing the second outer panel.

[0014] Wherein, the door panel body further comprises:

[0015] The door lock is arranged on a side of the door panel body away from the rotating hinge; the filling cavity is provided with a locking door core plate, the locking door core plate is aligned with the door lock, and the locking door core plate is made of perlite.

[0016] Wherein, a reinforcing steel plate is arranged on the top of the inner frame, and the reinforcing steel plate faces the first outer plate.

[0017] Wherein, the door panel body further comprises:

[0018] Two edges, one of which is arranged on the side of the door panel body away from the rotating hinge, and the other is arranged on the side of the door panel body close to the rotating hinge; a first groove and a second groove are formed on the side of the edge facing the door panel body, the first outer plate is clamped in the first groove, and the second outer plate is clamped in the second groove; the door core plate is arranged between the first groove and the second groove;

[0019] A third groove is formed on a side of the edge facing away from the door panel body, the third groove is located between the first groove and the second groove, and a second sealing member is provided in the third groove;

[0020] One of the edges is also formed with a fourth groove, the opening direction of the fourth groove is perpendicular to the opening direction of the third groove, the fourth groove is provided with a third seal, and the door panel body is abutted against the door frame through the second seal and the third seal.

[0021] Wherein, the side of the edge facing the door panel body and the side of the edge facing away from the door panel body are sprayed with heat insulation powder, and the thickness of the heat insulation powder is not less than 70 μm;

[0022] The side of the door frame facing the door panel body and the side of the door frame away from the door panel body are both sprayed with heat insulation powder, and the thickness of the heat insulation powder is not less than 70 μm.

[0023] The implementation of this utility model has the following beneficial effects:

[0024] According to the heat-insulating door provided by the utility model, the first outer plate can face the outdoor environment, and the second outer plate can face the indoor environment. By utilizing the heat-insulating effect of the first heat-resistant coating, the second heat-resistant coating and the perlite in the door core plate, the heat transfer path between the indoor environment and the outdoor environment in the door body is blocked. And by utilizing the low thermal conductivity of the first heat-resistant coating, the second heat-resistant coating and the perlite, the door panel body has the characteristic of low thermal conductivity, thereby improving the heat-insulating performance of the heat-insulating door and achieving heat preservation of the indoor environment.

[0025] At the same time, since the installation slot in the door frame opens toward the second outer panel, when the door body is closed in the door frame, the edge of the second outer panel in the door panel body abuts against the first seal in the door frame installation slot, so that the first seal can seal the gap between the edge of the second outer panel and the side wall of the door frame. Therefore, the indoor environment cannot contact the outdoor environment through the gap between the edge of the door panel body and the door frame, so as to enhance the heat insulation effect of the door panel body and the door frame, effectively enhance the indoor heat preservation effect of the door panel body, reduce the energy consumed for indoor heat preservation, and achieve energy saving and low carbon effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the heat-insulating door of the utility model;

[0027] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0028] Figure 3 yes Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0029] Figure 4 It is a structural schematic diagram of one of the hemming of the utility model;

[0030] Figure 5 It is a structural schematic diagram of another hemming of the utility model;

[0031] Figure 6 It is a structural schematic diagram of a door frame of the utility model;

[0032] Figure 7 It is a schematic diagram of the connection structure between the heat insulating member and the first outer panel or the second outer panel of the utility model;

[0033] Figure 8 It is a structural schematic diagram of the inner skeleton of the utility model. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail with reference to the accompanying drawings. It is hereby stated that the directional words such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the utility model are only based on the accompanying drawings of the utility model, and are not specific limitations of the utility model.

[0035] The heat-insulating door provided by the utility model, while ensuring the heat-insulating performance of the heat-insulating door, prevents the indoor environment from contacting the outdoor environment through the gap between the door panel body 1 and the door frame 2, thereby enhancing the coordinated heat-insulating effect between the door panel body 1 and the door frame 2, and further effectively enhancing the heat-insulating effect of the door panel body 1 on the indoor environment.

[0036] In one embodiment of the present invention, Figures 1 to 8 As shown, the heat-insulating door comprises a door panel body 1 and a door frame 2, and one side of the door panel body 1 is rotatably connected to the door frame 2 via a rotating hinge.

[0037] The door panel body 1 includes a first outer panel 11, a door core panel 12 and a second outer panel 13. The first outer panel 11 is arranged on one side of the door core panel 12, and the second outer panel 13 is arranged on the other side of the door core panel 12. The first heat-resistant coating 121 is sprayed on the side of the door core panel 12 facing the first outer panel 11, and the second heat-resistant coating 122 is sprayed on the side of the door core panel 12 facing the second outer panel 13, that is, both sides of the door core panel 12 are sprayed with heat-resistant coatings, so that both sides of the door core panel 12 can be insulated by the heat-resistant coatings. The door core panel 12 is filled with perlite.

[0038] The door frame 2 is provided with a mounting groove 21 , the opening of the mounting groove 21 faces the second outer plate 13 , and the mounting groove 21 is provided with a first sealing member 22 . The door panel body 1 is in sealing contact with the door frame 2 via the first sealing member 22 .

[0039] According to the heat insulation door provided by the utility model, the first outer plate 11 can face the outdoor environment, and the second outer plate 13 can face the indoor environment. By utilizing the heat insulation effect of the first heat-resistant coating 121, the second heat-resistant coating 122 and the perlite in the door core plate 12, the heat transfer path between the indoor environment and the outdoor environment in the door body is blocked. And by utilizing the low thermal conductivity of the first heat-resistant coating 121, the second heat-resistant coating 122 and the perlite, the door panel body 1 has the characteristic of low thermal conductivity, thereby improving the heat insulation performance of the heat insulation door and achieving heat preservation of the indoor environment.

[0040] At the same time, since the installation groove 21 in the door frame 2 opens toward the second outer plate 13, when the door body is closed in the door frame 2, the edge of the second outer plate 13 in the door panel body 1 abuts against the first seal 22 in the installation groove 21 of the door frame 2, so that the first seal 22 can seal the gap between the edge of the second outer plate 13 and the side wall of the door frame 2. Therefore, the indoor environment cannot contact the outdoor environment through the gap between the edge of the door panel body 1 and the door frame 2, so as to enhance the cooperative heat insulation effect between the door panel body 1 and the door frame 2, effectively enhance the indoor heat preservation effect of the door panel body 1, reduce the energy consumed for indoor heat preservation, and achieve energy saving and low carbon effect.

[0041] It should be noted here that the heat-resistant coating adopts a nano rare earth heat-resistant coating. By utilizing the excellent heat resistance and durability of the nano rare earth heat-resistant coating, the door panel body 1 can maintain a long-term heat insulation effect and reduce the door panel body 1's demand for traditional insulation materials.

[0042] It should also be noted that the interior of the door core board 12 is filled with perlite, and there are no gaps in the perlite in the door core board 12, so as to further ensure the heat insulation performance of the door panel body 1 and prevent the door panel body 1 from conducting heat.

[0043] It should also be noted that the first outer panel 11 may also face the indoor environment, and the second outer panel 13 may also face the outdoor environment, and the specific selection and adjustment can be made according to actual conditions.

[0044] Among them, the thickness of the first heat-resistant coating 121 and the second heat-resistant coating 122 are both 2mm-4mm. Preferably, the thickness of the first heat-resistant coating 121 and the second heat-resistant coating 122 are both 2mm, so as to utilize the heat-resistant coatings on both sides of the door core panel 12 to enhance the heat resistance of the door core panel 12 and reduce the thermal conductivity of the door core panel 12 to ensure the stable heat insulation effect of the door core panel 12.

[0045] The thickness of the perlite in the door core board 12 is 25-30 mm, preferably, the thickness of the perlite is 27 mm, so as to increase the heat transfer distance in the door core board 12 by using the perlite, thereby ensuring the thermal insulation function of the door core board 12. When the door panel body 1 adopts the heat-resistant coating and perlite of the above thickness, the heat transfer coefficient of the door panel body 1 can be ensured to be maintained at 1.8-2.0, which meets the building thermal insulation requirements in cold areas and further ensures energy-saving and low-carbon effects.

[0046] In the embodiment of the present utility model, Figure 1 and Figure 2 As shown, the door panel body 1 further includes a fireproof board 14, which is arranged between the door core board 12 and the first outer board 11. The thickness of the fireproof board 14 is 2mm-4mm, wherein the thickness of the fireproof board 14 is preferably 3mm. By arranging the fireproof board 14 between the door core board 12 and the first outer board 11, and since the first outer board 11 faces the outside, when a fire occurs outdoors, the fire can be prevented from spreading from the outside to the indoor, so as to prevent the external fire source from threatening the indoor.

[0047] Preferably, the fireproof board 14 is a light calcium fireproof board 14 .

[0048] In an embodiment of the utility model, the first outer panel 11 is an etched aluminum plate, the second outer panel 13 is a medium-density fiberboard, and the thickness of the second outer panel 13 is greater than the thickness of the first outer panel 11, so as to improve the thermal insulation performance of the second outer panel 13, further enhance the thermal insulation effect of the door panel body 1 on the indoor environment, and reduce the energy consumed by the indoor environment for thermal insulation.

[0049] like Figure 1 , Figure 3 and Figure 7 As shown, the edge of the first outer panel 11 is covered with a heat-resistant tape 15, and the edge of the second outer panel 13 is covered with a heat-resistant tape 15. The good thermal insulation performance of the heat-resistant tape 15 itself can effectively improve the overall thermal insulation effect of the door panel body 1, and reduce the heat transfer between the first outer panel 11 and the door core panel 12, as well as the heat transfer between the second outer panel 13 and the door core panel 12.

[0050] Furthermore, a heat-insulating veneer (not shown) is attached to the side of the second outer panel 13 away from the door core panel 12, and the thickness of the heat-insulating veneer is 0.5 mm-1 mm, and preferably, the thickness of the heat-insulating veneer is 0.5 mm. By attaching the heat-insulating veneer to the side of the second outer panel 13 away from the door core panel 12 (i.e., the side of the second outer panel 13 facing the room), the heat transfer distance of the indoor environment heat from the second outer panel 13 to the door panel body 1 is further increased, thereby enhancing the heat insulation effect of the door panel body 1.

[0051] In this embodiment, the heat-insulating veneer may be natural straight-grained Sapele veneer to enhance the aesthetics, practicality and durability of the door panel body 1 facing the indoor side.

[0052] In the embodiment of the present utility model, Figure 1 and Figure 2 As shown, the door core board 12 includes a door core 123 and two door panels 124, wherein one door panel 124 is arranged on the side of the door core 123 facing the first outer panel 11, and the other door panel 124 is arranged on the side of the door core 123 facing the second outer panel 13, so as to enhance the overall strength of the door core board 12 and ensure the overall structural stability of the door core board 12. In this embodiment, the door panel 124 is preferably made of galvanized sheet, wherein the thickness of the galvanized sheet is 0.8 mm.

[0053] The door core 123 is provided with an inner frame 125, and the inner frame 125 and the two door panels 124 are arranged to form a filling cavity, and the filling cavity is used to fill perlite to utilize the thermal insulation performance of the perlite to ensure the thermal insulation performance of the door core panel 12, thereby ensuring that the thermal insulation door panel 124 has the characteristic of low thermal conductivity, ensuring that the thermal conductivity of the thermal insulation door panel 124 meets the building insulation requirements.

[0054] The first heat-resistant coating 121 is sprayed on the side of one of the door panels 124 facing the first outer panel 11, and the second heat-resistant coating 122 is sprayed on the side of the other door panel 124 facing the second outer panel 13, so that the first heat-resistant coating 121 is used to block the heat transfer path between the first outer panel 11 and one of the door panels 124, and the second heat-resistant coating 122 is used to block the heat transfer path between the second outer panel 13 and the other door panel 124, thereby simultaneously blocking the heat transfer paths of the indoor environment and the outdoor environment from both sides of the door core panel 12 to ensure the thermal insulation effect of the door body.

[0055] Furthermore, if Figure 1 and Figure 8 As shown, the door panel body 1 also includes a door lock 16, which is arranged on the side of the door panel body 1 away from the rotating hinge, and a locking door core plate 161 is arranged in the filling cavity, and the locking door core plate 161 is aligned with the door lock 16. The locking door core plate 161 provides a stable supporting structure for the door lock 16 to ensure the installation stability of the door lock 16 in the door core 123. The locking door core plate 161 is made of perlite, and the heat insulation performance of perlite is used to prevent the heat of the indoor environment from flowing out from the door lock 16 structure position, further ensuring the heat insulation performance of the door panel body 1.

[0056] Furthermore, if Figure 8 As shown, a reinforcing steel plate 126 is provided on the top of the inner frame 125, and the reinforcing steel plate 126 faces the first outer plate 11. The reinforcing steel plate 126 can effectively enhance the structural strength of the inner frame 125, ensuring that the inner frame 125 can still maintain a certain structural stability when subjected to heat, external force impact or fire.

[0057] It should be noted here that the reinforcing steel plate 126 is welded to the top of the inner frame 125 , and the reinforcing steel plate 126 can be connected to the door closer to cooperate with the door closer to achieve smooth closing of the door panel body 1 .

[0058] In the embodiment of the present utility model, in order to further ensure the heat insulation effect of the heat insulation door panel 124, as Figure 1 , Figure 4 and Figure 5 As shown, the door panel body 1 further includes two edgings 17, one of which is arranged on the side of the door panel body 1 away from the rotating hinge, and the other edging 17 is arranged on the side of the door panel body 1 close to the rotating hinge. The edging 17 is formed with a first groove 171 and a second groove 172 on the side facing the door panel body 1, the first outer panel 11 is clamped in the first groove 171, and the second outer panel 13 is clamped in the second groove 172. The door core plate 12 is arranged between the first groove 171 and the second groove 172, specifically, one of the door panels 124 and the first outer panel 11 are clamped in the first groove 171, the other door panel 124 and the second outer panel 13 are clamped in the second groove 172, and the inner frame 125 is fixed between the two door panels 124. Through the installation of the structure in the door panel body 1 by the first groove 171 and the second groove 172, the first outer panel 11, the door core plate 12 and the second outer panel 13 can be closely fitted to enhance the overall stability of the door panel body 1.

[0059] A third groove 173 is formed on the side of the edge 17 facing away from the door panel body 1, and the third groove 173 is located between the first groove 171 and the second groove 172. A fourth groove 174 is also formed on one of the edges 17, and the opening direction of the fourth groove 174 is perpendicular to the opening direction of the third groove 173. The third groove 173 is provided with a second sealing member 175, and the fourth groove 174 is provided with a third sealing member 176. The door panel body 1 is in contact with the door frame 2 through the second sealing member 175 and the third sealing member 176.

[0060] For ease of explanation, in this embodiment, the wall surface of the second groove 172 away from the door panel body 1 is defined as the first outer wall, the wall surface of the third groove 173 away from the door panel body 1 is defined as the second outer wall, and the wall surface of the fourth groove 174 facing the door frame 2 is defined as the third outer wall.

[0061] When the door panel body 1 is closed in the door frame 2, the first outer wall abuts against the first seal 22 in the installation groove 21 of the door frame 2, and at the same time, the second outer wall abuts against the wall surface of the door frame 2 through the second seal 175, and the third outer wall abuts against the wall surface of the door frame 2 through the third seal 176. Therefore, through the joint action of the first seal 22, the second seal 175 and the third seal 176, the triple sealing of the gap between the side wall of the edging 17 and the side wall of the door frame 2 is achieved, thereby ensuring that the heat of the indoor environment cannot be transmitted to the outdoor environment from the gap between the side wall of the edging 17 and the side wall of the door frame 2, thereby effectively ensuring the insulation effect of the door panel body 1 on the indoor environment.

[0062] It should be noted that the first seal 22, the second seal 175 and the third seal 176 are preferably fireproof expansion seals. A first clamping column is formed in the third groove 173, and the second seal 175 is installed in the third groove 173 through the first clamping column. A second clamping column is formed in the fourth groove 174, and the third seal 176 is installed in the fourth groove 174 through the second clamping column.

[0063] It should also be noted that gaps may also be formed between the wall surface of the first outer panel 11 and the inner wall of the edging 17, and between the wall surface of the second outer panel 13 and the inner wall of the edging 17. In this embodiment, the heat-resistant tape 15 covering the edge of the first outer panel 11 can seal the wall surface of the first outer panel 11 and the inner wall of the edging 17, and the heat-resistant tape 15 covering the edge of the second outer panel 13 can seal the wall surface of the second outer panel 13 and the inner wall of the edging 17, so as to prevent the indoor and outdoor heat from being transferred from the gaps between the edging 17 and the first outer panel 11 and the second outer panel 13, and further enhance the heat insulation effect of the heat-insulating door panel 124 on the indoor and outdoor environment.

[0064] Furthermore, the side of the edging 17 facing the door panel body 1 and the side of the edging 17 away from the door panel body 1 are sprayed with thermal insulation powder, and the thickness of the thermal insulation powder is not less than 70μm, so as to utilize the thermal insulation powder to enhance the thermal insulation performance of the edging 17, further reduce heat transfer, and enhance the thermal insulation effect.

[0065] The side of the door frame 2 facing the door panel body 1 and the side of the door frame 2 away from the door panel body 1 are sprayed with insulation powder, and the thickness of the insulation powder is not less than 70μm, so as to utilize the insulation powder to enhance the insulation performance of the door frame 2, further reduce heat transfer, enhance the insulation effect, and further reduce the gap between the door frame 2 and the insulation door panel 124.

[0066] The above is a preferred embodiment of the present utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present utility model.

Claims

1. An insulating door, characterized in that: It comprises a door panel body and a door frame, wherein one side of the door panel body is rotatably connected to the door frame via a rotating hinge; The door panel body comprises a first outer panel, a door core panel and a second outer panel, wherein the first outer panel is arranged on one side of the door core panel, and the second outer panel is arranged on the other side of the door core panel, a first heat-resistant coating is sprayed on a side of the door core panel facing the first outer panel, and a second heat-resistant coating is sprayed on a side of the door core panel facing the second outer panel, and the interior of the door core panel is filled with perlite; The door frame is provided with a mounting groove, the opening of the mounting groove faces the second outer panel, the mounting groove is provided with a first sealing member, and the door panel body is in sealing contact with the door frame through the first sealing member.

2. The heat-insulating door according to claim 1, characterized in that The thickness of the first heat-resistant coating and the second heat-resistant coating are both 2mm-4mm, and the thickness of the perlite in the door core panel is 25-30mm.

3. The heat-insulating door according to claim 1, characterized in that: The door panel body also includes a fireproof board, which is arranged between the door core board and the first outer board, and the thickness of the fireproof board is 2mm-4mm.

4. The heat-insulating door according to claim 1, characterized in that: The first outer panel is an etched aluminum panel, the second outer panel is a medium fiberboard panel, the thickness of the second outer panel is greater than the thickness of the first outer panel, the edge of the first outer panel is covered with a heat-resistant tape, and the edge of the second outer panel is covered with a heat-resistant tape.

5. The heat-insulating door according to claim 4, characterized in that: A heat-insulating veneer is attached to a side of the second outer panel facing away from the door core panel, and the thickness of the heat-insulating veneer is 0.5mm-1mm.

6. The heat-insulating door according to claim 1, characterized in that: The door core board includes a door core and two door panels, wherein one door panel is arranged on the side of the door core facing the first outer panel, and the other door panel is arranged on the side of the door core facing the second outer panel, the door core is provided with an inner frame, and the inner frame and the two door panels are surrounded to form a filling cavity, and the filling cavity is used to fill perlite; The first heat-resistant coating is sprayed on a side of one of the door panels facing the first outer panel, and the second heat-resistant coating is sprayed on a side of the other door panel facing the second outer panel.

7. The heat-insulating door according to claim 6, characterized in that: The door panel body also includes: The door lock is arranged on a side of the door panel body away from the rotating hinge; the filling cavity is provided with a locking door core plate, the locking door core plate is aligned with the door lock, and the locking door core plate is made of perlite.

8. The heat-insulating door according to claim 6, characterized in that: A reinforcing steel plate is disposed on the top of the inner frame, and the reinforcing steel plate faces the first outer plate.

9. The heat-insulating door according to claim 1, characterized in that: The door panel body also includes: Two edges, one of which is arranged on the side of the door panel body away from the rotating hinge, and the other is arranged on the side of the door panel body close to the rotating hinge; a first groove and a second groove are formed on the side of the edge facing the door panel body, the first outer plate is clamped in the first groove, and the second outer plate is clamped in the second groove; the door core plate is arranged between the first groove and the second groove; A third groove is formed on a side of the edge facing away from the door panel body, the third groove is located between the first groove and the second groove, and a second sealing member is provided in the third groove; One of the edges is also formed with a fourth groove, the opening direction of the fourth groove is perpendicular to the opening direction of the third groove, the fourth groove is provided with a third seal, and the door panel body is abutted against the door frame through the second seal and the third seal.

10. The heat-insulating door according to claim 9, characterized in that: The side of the edge facing the door panel body and the side of the edge facing away from the door panel body are both sprayed with heat insulation powder, and the thickness of the heat insulation powder is not less than 70 μm; The side of the door frame facing the door panel body and the side of the door frame away from the door panel body are both sprayed with heat insulation powder, and the thickness of the heat insulation powder is not less than 70 μm.

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