Air supplement pipe capable of being mechanically heated

Abstract

The utility model provides an air supplement pipe capable of being mechanically heated, which comprises an air supplement pipeline, the air supplement pipeline is formed by splicing a plurality of pipeline units, the left end face of each pipeline unit is fixedly connected with a first connecting piece, the right end face of each pipeline unit is fixedly connected with a second connecting piece, and the outer wall of each first connecting piece is provided with a containing groove. A fixing assembly is arranged on the left side of the second connecting piece, and the containing groove is matched with the fixing assembly. The spiral heating pipe penetrates through the pipeline unit; the spiral heating pipe comprises a spiral pipe and an electric heating layer laid on the outer wall of the spiral pipe; an air heating space is formed in the spiral pipe, and air is heated when flowing through the air heating space of the spiral pipe; a first heat reflecting layer and a heat preservation layer are arranged on the inner wall of the pipeline unit. A heat reflection column is arranged in the spiral heating pipe, the heat reflection column and the pipeline unit are coaxially arranged, and a second heat reflection layer is arranged on the surface of the heat reflection column. Therefore, air entering the air supplementing pipe can be fully heated, and the cold bridge effect is avoided.

Description

Technical Field

[0001] The utility model relates to the field of air supply pipes, in particular to an air supply pipe which can be mechanically heated. Background Art

[0002] Supply air is applicable to closed areas equipped with smoke exhaust systems (such as fire compartments without direct access to outdoor vehicle exits). Based on the principle of air flow, air needs to be removed from one area while simultaneously being supplied from another. In underground garages, due to the separation of fire walls and floor slabs, some fire compartments directly lead to outdoor vehicle exits, lacking natural air intake. In these areas, smoke exhaust cannot be exhausted without simultaneous supply air, as the surrounding area is closed. Therefore, it is required that fire compartments in these areas be equipped with supply air systems.

[0003] When smoke exhaust systems from normal temperature zones are applied to high latitudes, the large amount of cold air introduced can lead to the following problems: 1) Cold bridges are common in high latitudes. Because northern winters are colder, the temperature difference between indoor and outdoor is significant. At the junction of the interior and exterior, the local thermal conductivity increases, enhancing heat transfer capacity and causing a sharp drop in temperature. The hot air inside the room cools, forming mist, which then forms ice, freezing the smoke and fire damper discs and preventing them from opening to exhaust smoke. 2) The smoke exhaust fan blades and volute freeze and become stuck, preventing them from operating to exhaust smoke. Therefore, if the supply air is not treated, the damage will be exacerbated in the event of a fire. To address this, we propose a mechanically heated supply air duct. Utility Model Content

[0004] To overcome the problem in existing technologies where the air supply duct cannot regulate the temperature of the incoming air, thus causing the cold bridge effect and posing a serious threat to the smoke exhaust system, the utility model provides a mechanically heated air supply duct that efficiently heats the air entering the air supply duct through a spiral heating tube, thereby avoiding the cold bridge effect.

[0005] The utility model adopts the following technical solutions.

[0006] A mechanically heated air supply duct includes an air supply duct, the air supply duct being formed by splicing a plurality of duct units, a first connector being fixedly connected to the left end face of the duct unit, a second connector being fixedly connected to the right end face of the duct unit, a receiving groove being provided on the outer wall of the first connector, and a fixing assembly being provided on the left side of the second connector, the receiving groove being matched with the fixing assembly; and a spiral heating pipe being provided through the duct unit;

[0007] The spiral heating tube includes a spiral tube and an electric heating layer laid on the outer wall of the spiral tube; the interior of the spiral tube is an air heating space, and the air is heated and heated when flowing through the air heating space of the spiral tube; the inner wall of the pipeline unit is provided with a first heat reflection layer and a thermal insulation layer.

[0008] A heat reflection column is arranged in the spiral of the spiral heating tube, the heat reflection column is coaxially arranged with the pipeline unit, and a second heat reflection layer is arranged on the surface of the heat reflection column.

[0009] Preferably, the pipeline unit is a hollow cylindrical structure, which is coaxially arranged with the spiral of the spiral heating tube; an air inlet and an air outlet are respectively provided at both ends of the spiral heating tube.

[0010] Preferably, the electric heating layer includes one of a spiral resistance wire layer or a graphene heating material layer or a combination of the above heating material layers; the first heat reflecting layer and the second heat reflecting layer are both anti-infrared radiation layers, which are metal or metal oxide electroplating layers; the thermal insulation layer is an aerogel thermal insulation layer.

[0011] Preferably, the fixing assembly includes a first claw and a second claw, and the first claw and the second claw are respectively swingably arranged on the same side end surface of the second connecting member;

[0012] The first claw is provided with a mounting groove, a locking block is slidably provided inside the mounting groove, and a spring is provided between the locking block and the mounting groove;

[0013] The second claw is provided with an inserting groove adapted to the locking block.

[0014] Preferably, the outer wall of the pipeline unit is coated with fireproof rock wool.

[0015] Preferably, an installation component for fixing the air supply duct is also provided, and the installation component includes an upper splint and a lower splint, and the upper splint and the lower splint are both semicircular, and the upper splint and the lower splint are equipped with the same screw on the same side, and the screw is movably connected to the upper splint and the lower splint, and two nuts are threadedly connected to the screw.

[0016] Preferably, the inner side walls of the upper clamping plate and the lower clamping plate are both paved with anti-slip rubber.

[0017] The beneficial effects of the utility model are:

[0018] The utility model provides a mechanically heated air supply duct, including an air supply duct, which is formed by splicing a plurality of duct units, wherein the left end face of the duct unit is fixedly connected to a first connector, and the right end face of the duct unit is fixedly connected to a second connector, the outer wall of the first connector is provided with a receiving groove, and the left side of the second connector is provided with a fixing assembly, the receiving groove and the fixing assembly cooperate; further comprising a spiral heating tube passing through the duct unit; the spiral heating tube comprises a spiral tube and an electric heating layer laid on the outer wall of the spiral tube. When the air flows through the spiral tube, it is heated and heated; thereby, the air entering the air supply duct is fully heated, avoiding the occurrence of a cold bridge effect; at the same time, due to the provision of a heating device for the spiral tube, the air flow path is longer, the heat exchange effect is better, and the heat generated by the electric energy can be better utilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the present utility model;

[0021] Figure 2 A cross-sectional view of an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the first connecting member in one embodiment of the present utility model;

[0023] Figure 4 Schematic diagram of the three-dimensional structure of the second connecting member in one embodiment of the present invention.

[0024] Explanation of the accompanying drawings: 1. Pipe unit; 11. First heat-reflecting layer; 12. Insulation layer; 13. Fire-proof rock wool; 2. First connecting piece; 21. Receiving groove; 3. Second connecting piece; 31. First claw; 311. Mounting groove; 312. Locking block; 313. Spring; 32. Second claw; 321. Plug-in groove; 41. Spiral tube; 42. Electric heating layer; 43. Heat-reflecting column; 51. Upper splint; 52. Lower splint; 53. Screw; 54. Nut. DETAILED DESCRIPTION

[0025] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. In order to better illustrate this embodiment, certain components of the accompanying drawings may be omitted, enlarged, or reduced in size, and do not represent the actual size of the product.

[0026] For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The technical solution of the present utility model will be further described below in conjunction with the drawings and embodiments.

[0027] A mechanically heated air supply pipe includes an air supply pipe, which is composed of a plurality of pipe units 1. The left end face of the pipe unit 1 is fixedly connected to a first connecting member 2, and the right end face of the pipe unit 1 is fixedly connected to a second connecting member 3. The outer wall of the first connecting member 2 is provided with a receiving groove 21, and the left side of the second connecting member 3 is provided with a fixing component, and the receiving groove 21 cooperates with the fixing component; it also includes a spiral heating pipe passing through the pipe unit 1

[0028] The spiral heating tube includes a spiral tube 41 and an electric heating layer 42 laid on the outer wall of the spiral tube 41; the interior of the spiral tube 41 is an air heating space, and the air is heated when flowing through the spiral tube air heating space; the inner wall of the pipeline unit 1 is provided with a first heat reflecting layer 11 and an insulation layer 12.

[0029] A heat reflecting column 43 is provided in the spiral of the spiral heating tube. The heat reflecting column 43 is coaxially arranged with the pipeline unit 1 . A second heat reflecting layer is provided on the surface of the heat reflecting column 43 .

[0030] The heat generated by the electric heating layer 42 is transferred to the spiral tube 41, and then the heat is transferred to the air flowing therein. Due to the spiral tube 41 provided, the flow path of the air can be made longer, the heating time is also longer, and the temperature increased is also higher.

[0031] In some embodiments, the pipe monomer 1 is a hollow cylindrical structure, which is coaxially arranged with the spiral of the spiral heating tube; an air inlet and an air outlet are respectively provided at both ends of the spiral heating tube.

[0032] In some embodiments, the electric heating layer 52 is comprised of one or a combination of a spirally wound resistor wire layer, a printed thick-film resistor wire layer, or a graphene heating material layer. The first and second heat-reflecting layers 11 and 12 are anti-infrared radiation layers, typically metal or metal oxide electroplated layers. The insulation layer 12 is comprised of an aerogel insulation layer. The insulation layer 12 is disposed outside the reflective layer and can be made of an insulating material such as aerogel. Its purpose is to prevent heat generated by the heating resistor wire from being transferred to the duct unit 1 via air conduction, thereby preventing heat loss.

[0033] In some embodiments, the fixing assembly includes a first claw 31 and a second claw 32, and the first claw 31 and the second claw 32 are respectively swingably arranged on the same side end surface of the second connecting member 3; a mounting groove 311 is provided on the first claw 31, and a locking block 312 is slidingly arranged inside the mounting groove 311, and a spring 313 is arranged between the locking block 312 and the mounting groove 311; a plug-in groove 321 is provided on the second claw 32 to accommodate the locking block 312.

[0034] In this embodiment, the principle of the fixing assembly is as follows: when the end face of the left pipe unit 1 abuts against the end face of the right pipe unit 1, the accommodating groove 21 of the first connecting member on the right pipe unit 1 is flush with the position of the fixing assembly on the left pipe unit 1; first, the locking block 312 on the first claw 31 is pulled toward the direction close to the inner bottom wall of the installation groove 311, and then the first claw 31 and the second claw 32 are rotated so that one end of the first claw 31 and the second claw 32 are in the accommodating groove 21, and finally the locking block 312 is released. Under the action of the elastic force of the spring 313, the locking block 312 moves toward the direction close to the plug-in groove 321 and finally enters the plug-in groove 321; thereby completing the fixation of the first claw 31 and the second claw 32, and no relative swing can occur between the two, thereby realizing the axial fixed connection between the pipe units 1.

[0035] Furthermore, in order to achieve a better fixing effect, multiple groups of first claws 31 and second claws 32 are provided to make the stress during the fixed connection more uniform. Furthermore, in order to achieve a better sealing performance between the pipe units 1, the end faces of the pipe units 1 are all provided with sealing rings.

[0036] In some embodiments, the outer wall of the pipe unit 1 is coated with fireproof rock wool 13. The fireproof rock wool 13 has the characteristics of being able to withstand high-intensity pressure, being stable in use, not deforming, and having high fire resistance and high safety performance.

[0037] In some embodiments, a mounting assembly is also provided. The mounting assembly includes an upper clamping plate 51 and a lower clamping plate 52. Both the upper clamping plate 51 and the lower clamping plate 52 are semicircular in shape. When clamping the duct unit 1, the upper clamping plate 51 and the lower clamping plate 52 are spliced ​​together to form a circle that adapts to the shape of the duct. The upper clamping plate 51 and the lower clamping plate 52 are assembled on the same side with a common screw 53. The screw 53 is movably connected to the upper clamping plate 51 and the lower clamping plate 52. Two nuts 54 are threadedly connected to the screw 53. The nuts 54 tighten the upper clamping plate 51 and the lower clamping plate 52. The end of the screw 53 away from the air supply duct can be fixed to the ceiling or wall to complete the fixing of the duct unit 1.

[0038] In some embodiments, the inner sidewalls of the upper clamping plate 51 and the lower clamping plate 52 are paved with anti-slip rubber, which increases the friction between the upper clamping plate 51 or the lower clamping plate 52 and the outer wall of the pipe unit 1 and prevents relative sliding therebetween.

[0039] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A mechanically heated air supply duct, comprising an air supply duct, the air supply duct being formed by splicing a plurality of duct units, a first connector being fixedly connected to the left end face of the duct unit, a second connector being fixedly connected to the right end face of the duct unit, a receiving groove being provided on the outer wall of the first connector, and a fixing assembly being provided on the left side of the second connector, the receiving groove being engaged with the fixing assembly; and further comprising a spiral heating pipe passing through the duct unit; The spiral heating tube comprises a spiral tube and an electric heating layer provided on the outer wall of the spiral tube; the interior of the spiral tube is an air heating space, and the air is heated and heated when it flows through the air heating space of the spiral tube; the inner wall of the pipe unit is provided with a first heat reflection layer and a heat insulation layer; A heat reflection column is arranged in the spiral of the spiral heating tube, the heat reflection column is coaxially arranged with the pipeline unit, and a second heat reflection layer is arranged on the surface of the heat reflection column.

2. The mechanically heated air supply pipe according to claim 1 is characterized in that the pipe unit is a hollow cylindrical structure, which is coaxially arranged with the spiral of the spiral heating pipe; an air inlet and an air outlet are respectively provided at both ends of the spiral heating pipe.

3. A mechanically heated air supply duct according to claim 1, characterized in that the electric heating layer includes one of a wound resistance wire layer or a graphene heating material layer or a combination of the above heating material layers, the first heat reflecting layer and the second heat reflecting layer are both anti-infrared radiation layers, which are metal or metal oxide electroplating layers; and the thermal insulation layer is an aerogel thermal insulation layer.

4. The mechanically heated air supply duct according to claim 1, wherein the fixing assembly comprises a first claw and a second claw, wherein the first claw and the second claw are respectively swingably disposed on the same side end surface of the second connecting member; The first claw is provided with a mounting groove, a locking block is slidably provided inside the mounting groove, and a spring is provided between the locking block and the mounting groove; The second claw is provided with an inserting groove adapted to the locking block.

5. The mechanically heated air supply pipe according to claim 1, wherein the outer wall of the pipe unit is coated with fireproof rock wool.

6. An air supply duct that can be mechanically heated according to claim 1 is characterized in that it is also provided with an installation component for fixing the air supply duct, the installation component includes an upper splint and a lower splint, the upper splint and the lower splint are both semicircular, the upper splint and the lower splint are equipped with the same screw on the same side, the screw is movably connected to the upper splint and the lower splint, and two nuts are threadedly connected to the screw.

7. The mechanically heated air supply duct according to claim 6, wherein the inner side walls of the upper clamping plate and the lower clamping plate are both paved with anti-slip rubber.

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