CN205079320U - Electric heating apparatus - Google Patents

Abstract

The utility model provides an electric heating apparatus, includes the electrothermal tube, electric heating apparatus is still including cup jointing the fin on the electrothermal tube, the fin main part is planar sheetmetal, the bisymmetry side of main part is equipped with the turn -ups, and the main part middle part is opened to have and is equipped with the flange on through -hole and the through -hole, turn -ups direction and flange opposite direction, the flange bore is greater than the electrothermal tube diameter. This electric heating apparatus realizes the heat dissipation through a plurality of independent fin suits on the electrothermal tube, it is efficient keep warm, dismouting maintenance and replace all very conveniently, and the device can the exclusive use, also can install on other heating installations.

Description

Electric heating device

technical field

The utility model belongs to the field of heaters, and mainly refers to an electric heating device.

Background technique

The heating radiator mainly plays the role of heat conduction for heat dissipation. When the heat medium with high temperature flows through the radiator, the heat carried by the heat medium is continuously transferred to the object with a lower temperature through the radiator, so as to realize the heat dissipation. temperature transfer. Traditional heat sinks are all in one series. Multiple larger sheet structures are integrally formed and fixedly connected. It is inconvenient to install. In case some parts are damaged, they can only be replaced as a whole. Addition, reduction and maintenance are inconvenient and costly. To a certain extent, it causes waste of resources. Moreover, in the prior art, many heat dissipation holes on the heat sink are square, and during the air circulation process of the square holes, eddy currents are likely to be generated at the corners of the square holes, which is not conducive to air circulation.

Utility model content

The utility model provides an electric heating device, which realizes heat dissipation through a plurality of independent cooling fins set on the electric heating tube, has high heating efficiency, and is very convenient for disassembly, maintenance and replacement. The device can be used alone or installed in other heating equipment superior.

The technical solution of the utility model: an electric heating device, including an electric heating tube, is characterized in that: the electric heating device also includes a cooling fin sleeved on the electric heating tube, and the main body of the cooling fin is a plane metal sheet, and the main body The two symmetrical sides of the body are provided with flanging, the middle part of the main body is provided with a through hole and a flange is provided on the through hole, the direction of the flanging is opposite to the direction of the flange, and the heat sink is sleeved on the electric heating tube through the through hole . With this arrangement, a small cavity is formed between two adjacent heat sinks, which facilitates heat transmission and also determines the distance between the two heat sinks.

Preferably, the turning angle between the turning edge and the main body is 90 degrees. This angle facilitates accurate positioning of the distance between the two cooling fins.

Preferably, the height of the flange is lower than that of the main body. This setting provides a gap for horizontal air flow, which facilitates air flow in a direction perpendicular to the electric heating tube, and improves the speed of hot air circulation and heat dissipation.

Preferably, the main body is provided with oblong holes, and the oblong holes are provided in the vertical direction of the two flanges and located on the upper part of the flange. The oblong hole plays the role of heat dissipation along the axial direction of the electric heating tube, that is, the hot air flows from one side of the main body through the oblong hole to the other side, and is also used for positioning when installed on the electric heating tube, which is convenient for determining the installation of multiple heat sinks angle.

Preferably, the length of the oblong hole is 1/3 of the transverse width of the main body. Such arrangement can avoid the stress concentration of the main body on both sides of the flange.

Preferably, a limiting groove is provided on the flange. Because the cooling fins are socketed on the electric heating tubes one by one, the setting of the limit groove further improves the installation firmness of the cooling fins and the electric heating tubes, and prevents mutual sliding between the cooling fins and the electric heating tubes.

Description of drawings

Fig. 1 is the schematic diagram of electric heating device;

Figure 2 is a schematic diagram of the heat sink.

In the figure, 1. Main body, 11. Main body edge, 2. Through hole, 3. Flange, 4. Flange, 5. Oval hole, 6. Limiting groove, 7. Electric heating tube, 8. Heat sink, H1. The height of the main body, H2. The height of the flange, L1. The length of the flange, L2. The length of the flange, L3. The width of the oblong hole, L4. The transverse width of the main body, α. The angle between the main body and the flange .

detailed description

As shown in Figure 1-2, the electric heating device includes an electric heating tube 7 and a heat sink 8. The heat sink 8 includes a main body 1 of a sheet metal structure. A through hole 2 is opened in the middle of the main body. A flanging 4 is also provided, and the direction of the flanging 4 is opposite to that of the flange 3 . A plurality of cooling fins are sleeved and installed on the electric heating tube 7 through the through hole 7 to realize heating and heat dissipation. Combined with the length of the flange 3 and the length of the flange 4, the distance between the two heat sinks on the electric heating tube can be determined. Only when the diameter of the through hole and the flange is larger than the diameter of the electric heating tube installed by the cooling fin can it be socketed on the electric heating tube.

The turning angle α between the flange and the main body is preferably 0-90 degrees, most preferably 90 degrees. The height H2 of the flange is preferably lower than the height H1 of the main body, which can provide a heat dissipation channel perpendicular to the axial direction of the electric heating tube. Preferably, the length L2 of the flange is equal to the length L1 of the flange, which is beneficial for bidirectional positioning of the distance between the cooling fins.

The main body 1 can also be provided with an oblong hole 5. The oblong hole is located above the flange. The position of the oblong hole on the main body is perpendicular to the position of the flange on the main body, which is beneficial to the fluid circulation along the axial direction of the electric heating tube after installation. The oblong hole is used The structure instead of the traditional square shape reduces spoilers. Limiting slots 6 can also be provided on the flange 3 to enhance the firmness of the installation of the heat sink and the electric heating tube. Preferably, the width L3 of the oblong hole is equal to 1/3 of the lateral width L4 of the main body.

The above are preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model. Appropriate improvements made by those skilled in the art based on this idea should also be regarded as the protection scope of the present utility model.

Claims (6)

1. An electric heating device, comprising an electric heating tube (7), characterized in that: the electric heating device also includes a heat sink (8) sleeved on the electric heating tube (7), and the main body (1) of the heat sink is planar Metal sheet, the two symmetrical sides of the main body are provided with flanging (4), the middle part of the main body is opened with a through hole (2) and the through hole is provided with a flange (3), the direction of the flanging is opposite to the direction of the flange , the heat sink (8) is sleeved on the electric heating tube (7) through the through hole (2). 2. The electric heating device according to claim 1, characterized in that: the turning angle between the flange (4) and the main body (1) is 90 degrees. 3. The electric heating device according to claim 1, characterized in that: the height of the flange (4) is lower than that of the main body (1). 4. The electric heating device according to claim 1, characterized in that: the main body is provided with an oblong hole (5), and the oblong hole (5) is provided in the vertical direction of the two flanges (4), and is located on the flange ( 3) Upper part. 5. The electric heating device according to claim 4, characterized in that the length of the oblong hole (5) is 1/3 of the lateral width of the main body (1). 6. The electric heating device according to claim 1, characterized in that: the flange (3) is provided with a limiting groove (6).