Air pipe type electric heating device

Abstract

The utility model discloses an air pipe type electric heating device which comprises a pipe body, a pipe body installation frame is arranged at the end of the pipe body, and a heating structure is arranged in an inner cavity of the pipe body. The heating structure comprises a central pipe, connecting frames are arranged in an inner cavity of the central pipe, a plurality of heating pipes are arranged between the two connecting frames, air gathering pipes are arranged on the two sides of the central pipe, connecting flanges are arranged between the air gathering pipes and the central pipe, the other ends of the air gathering pipes are connected with an air gathering pipe mounting frame, and through holes are formed in the inner wall of the air gathering pipe mounting frame in a penetrating mode. Through the use of the heating structure, air enters from the large-diameter end of the air gathering pipe and is discharged into the central pipe from the small-diameter end of the air gathering pipe, and then the air is gathered through the air gathering pipe, so that the contact area between the air and the heating pipe is greatly increased, and the air is in a state of being heated by the heating pipe in the whole flowing process in the central pipe; and therefore, the air heating time is prolonged, the air is heated more uniformly, the overall structure is simple, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of air duct heating, in particular to an air duct type electric heating device. Background Art

[0002] The air duct is a piping system used for air transportation and distribution. Electric heating generally uses resistance to heat the air and is a commonly used pipeline heating technology.

[0003] For example, in the prior art, the utility model with the announcement number CN213577852U discloses a duct-type electric heating device, including a box body, one side of the box body is connected to a power supply installation box, and a heating element for heating the air outlet of the air outlet duct is arranged in the box body; the heating element includes a fixed end and a heating end, a fixed inner plate is arranged in the power supply installation box, the fixed end is arranged on the fixed inner plate, the heating end is arranged at an end of the fixed end away from the fixed plate, the heating end is arranged in the box body, and a temperature resistance component is arranged between the box body and the power supply installation box, the temperature resistance component includes a heat insulation board, and the heat insulation board is arranged on the side of the fixed inner plate away from the heating end. This application makes the duct-type electric heating device have a fireproof effect.

[0004] And the prior art, a duct type air heating device with announcement number CN218296235U.

[0005] The above technical solution still has the disadvantage that the contact time between the air and the heating structure is short, resulting in uneven heating of the air. Therefore, we propose a duct-type electric heating device to solve the above problem. Utility Model Content

[0006] The purpose of the utility model is to provide a duct type electric heating device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: comprising a tube body, a tube body mounting frame is provided at the end of the tube body, and a heating structure is provided in the inner cavity of the tube body; the heating structure comprises a central tube, a connecting frame is provided in the inner cavity of the central tube, a plurality of heating tubes are provided between the two connecting frames, air collecting ducts are provided on both sides of the central tube, a connecting flange is provided between the air collecting duct and the central tube, the other end of the air collecting duct is connected to the air collecting duct mounting frame, a through hole is penetrated through the inner wall of the air collecting duct mounting frame, a flat head bolt is provided in the inner cavity of the through hole, and the outer ring sleeve of the central tube is provided with thermal insulation cotton.

[0008] Preferably, the air collecting pipe is conical, and the small diameter end of the air collecting pipe is connected to the end of the central pipe through a connecting flange.

[0009] Preferably, the thermal insulation cotton is wrapped around the outer ring of the central tube in a winding manner and fixedly connected by glue.

[0010] Preferably, a sealing structure is provided on the edge of the air concentrating duct mounting frame.

[0011] Preferably, a sound insulation structure is provided between the tube body and the heating structure.

[0012] Preferably, a display is provided on the side wall of the tube body, and a wire tube is connected to the side wall of the display. One end of the wire tube extends to the inner cavity of the tube body and is connected to a temperature sensor.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The duct-type electric heating device uses a heating structure, and air enters from the large-diameter end of the air collecting duct and is discharged into the central tube from the small-diameter end of the air collecting duct, and then the air is collected by the air collecting duct, thereby greatly increasing the contact area between the air and the heating tube. During the entire flow of the air in the central tube, the air is heated by the heating tube, thereby extending the heating time of the air, so that the air is heated more evenly. The overall structure is simple and the practicability is strong.

[0015] 2. The duct-type electric heating device uses thermal insulation cotton, which plays a role of heat preservation and can avoid heat loss in the central tube to a certain extent, thereby reducing the energy consumption generated when the equipment is used, and thus reducing the cost of using the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the heating structure of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the utility model.

[0019] In the figure: 1. tube body; 2. tube body mounting frame; 3. heating structure; 31. center tube; 32. connecting frame; 33. heating tube; 34. connecting flange; 35. air collecting duct; 36. air collecting duct mounting frame; 37. through hole; 38. flat head bolt; 39. thermal insulation cotton; 4. display; 5. wire tube; 7. temperature sensor; 8. sound insulation structure; 9. sealing structure. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides a technical solution of a duct type electric heating device:

[0022] Example:

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, it includes a tube body 1, a tube body mounting frame 2 is provided at the end of the tube body 1, and a heating structure 3 is provided in the inner cavity of the tube body 1; the heating structure 3 includes a central tube 31, a connecting frame 32 is provided in the inner cavity of the central tube 31, a plurality of heating tubes 33 are provided between the two connecting frames 32, air collecting tubes 35 are provided on both sides of the central tube 31, a connecting flange 34 is provided between the air collecting tube 35 and the central tube 31, the other end of the air collecting tube 35 is connected to an air collecting tube mounting frame 36, a through hole 37 is penetrated through the inner wall of the air collecting tube mounting frame 36, a flat head bolt 38 is provided in the inner cavity of the through hole 37, and an outer ring sleeve of the central tube 31 is provided with thermal insulation cotton 39.

[0024] The air collecting pipe 35 is conical, and the small diameter end of the air collecting pipe 35 is connected to the end of the central pipe 31 through a connecting flange 34 .

[0025] In this embodiment, refer to Figure 2 The heating tube 33 is horizontally arranged in the inner cavity of the central tube 31, and the heating structure 3 is in the shape of an "I" as a whole, so that the air can enter the heating structure 3 in a diffused state and be discharged in a diffused state, thereby avoiding the hot air being concentrated in the same area of ​​the room, resulting in the heat of the space being higher than that of other areas; when in use, the air enters from the large-diameter end of the air collecting tube 35, and is discharged into the central tube 31 from the small-diameter end of the air collecting tube 35, and then the air is collected by the air collecting tube 35, thereby greatly increasing the contact area between the air and the heating tube 33, and the air is in a state of being heated by the heating tube 33 during the entire flow process in the central tube 31, thereby extending the heating time of the air, so that the air is heated more evenly.

[0026] Among them, Figure 3 As shown, the heat-insulating cotton 39 is wrapped around the outer ring of the central tube 31 and fixedly connected by glue.

[0027] In this embodiment, the heat-insulating cotton 39 plays a role of heat preservation, which can avoid the heat loss in the central tube 31 to a certain extent, thereby reducing the energy consumption generated when the equipment is used, and further reducing the use cost of the equipment.

[0028] Among them, Figure 1 As shown, a sealing structure 9 is provided on the edge of the air duct mounting frame 36 .

[0029] In this embodiment, the sealing structure 9 is a sealant. After the heating structure 3 is installed in the tube body 1 by means of the flat head bolts 38, it is necessary to apply the sealant at the port of the heating structure 3, that is, at the gap between the inner wall of the tube body 1 and the heating structure 3, to prevent air from flowing through the gap and causing the occurrence of undesirable conditions such as loose bolts or noise, so as to improve the stability of the equipment.

[0030] Wherein, a sound insulation structure 8 is arranged between the tube body 2 and the heating structure 3 .

[0031] In this embodiment, the sound insulation structure 8 is a sound insulation board, which plays a sound insulation role. As the air flows in the air collecting duct 35, its flow path gradually narrows, causing the air flow rate to accelerate, thereby producing a louder sound. After the sound insulation structure 8 is set, the sound can be isolated to a certain extent, thereby reducing the impact of noise on the user, thereby improving the user experience.

[0032] Among them, Figure 1 As shown, a display 4 is provided on the side wall of the tube body 1 , and a wire tube 5 is connected to the side wall of the display 4 . One end of the wire tube 5 extends to the inner cavity of the tube body 1 and is connected to a temperature sensor 7 .

[0033] In this embodiment, the temperature sensor 7 can detect the air temperature of the air outlet duct of the tube body 1, and the detection result can be displayed through the display 4, so that the user can intuitively understand the current air temperature, so as to adjust the temperature and thus improve the convenience of using the equipment.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A duct type electric heating device, comprising a tube body (1), characterized in that: A tube body mounting frame (2) is provided at the end of the tube body (1), and a heating structure (3) is provided in the inner cavity of the tube body (1); The heating structure (3) comprises a central tube (31), the inner cavity of the central tube (31) is provided with a connecting frame (32), a plurality of heating tubes (33) are provided between the two connecting frames (32), air collecting tubes (35) are provided on both sides of the central tube (31), a connecting flange (34) is provided between the air collecting tube (35) and the central tube (31), the other end of the air collecting tube (35) is connected to an air collecting tube mounting frame (36), a through hole (37) is penetrated through the inner wall of the air collecting tube mounting frame (36), a flat head bolt (38) is provided in the inner cavity of the through hole (37), and a heat preservation cotton (39) is provided on the outer ring of the central tube (31).

2. The duct type electric heating device according to claim 1, characterized in that: The air collecting pipe (35) is conical, and the small diameter end of the air collecting pipe (35) is connected to the end of the central pipe (31) through a connecting flange (34).

3. The duct type electric heating device according to claim 1, characterized in that: The thermal insulation cotton (39) is wrapped around the outer ring of the central tube (31) in a winding manner and is fixedly connected by glue.

4. The duct type electric heating device according to claim 1, characterized in that: A sealing structure (9) is provided at the edge of the air collecting duct mounting frame (36).

5. The duct type electric heating device according to claim 1, characterized in that: A sound insulation structure (8) is provided between the tube body (1) and the heating structure (3).

6. The duct type electric heating device according to claim 1, characterized in that: A display (4) is provided on the side wall of the tube body (1), and a wire tube (5) is connected to the side wall of the display (4). One end of the wire tube (5) extends to the inner cavity of the tube body (1) and is connected to a temperature sensor (7).

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