CN218846433U

CN218846433U - Radiation type electric heater

Info

Publication number: CN218846433U
Application number: CN202223074718.4U
Authority: CN
Inventors: 戚洪明
Original assignee: Wuxi Huaneng Electric Heating Equipment Co ltd
Current assignee: Wuxi Huaneng Electric Heating Equipment Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-04-11
Anticipated expiration: 2032-11-18

Abstract

The utility model relates to an electric heater, especially a radiant electric heater, include: a heat preservation box; the snakelike tube panel is arranged in the heat insulation box and comprises a plurality of heat exchange tubes, the heat exchange tubes are S-shaped and form a plurality of inner bending grooves and outer bending grooves, the heat exchange tubes are arranged in an array mode, and two ends of each heat exchange tube are arranged on the heat insulation box; the heating tube panel is installed in the heat insulation box, and a plurality of heating tube panels are inserted into the inner bending grooves and/or the outer bending grooves and used for heating the heat exchange tubes. The utility model provides a pair of radiant electric heater has effectively improved heat exchange efficiency, has reduced the volume, has reduced the energy consumption, especially under same output's the condition, electric heater's volume is 1/2 of traditional radiant electric heater volume.

Description

Radiation type electric heater

Technical Field

The utility model relates to an electric heater, especially a radiant electric heater.

Background

The heat exchange tube of the traditional radiant electric heater adopts a spiral structure or a runway structure, and the heating element is arranged on the heat insulation layer or is inserted in a point mode by adopting an electric heating element with a ceramic framework. The former disadvantage is that the radiation angle factor between the heating element and the coil of the helical structure is too small, which results in a relatively high temperature of the heating element. The latter structure causes unevenness in the surface temperature of the heat exchange tubes of the racetrack structure due to the dot arrangement. The former heat generating element has a high temperature, resulting in an increase in heat dissipation. The latter also leads to an increase in the temperature of the flange of the top heating element, also resulting in an increase in the heat dissipation, due to the high number of components inserted. Both are bulky and manufacturing cost and energy consumption are important factors that restrict user selection.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the utility model provides a radiation type electric heater that small, with low costs, the infection coefficient is high, concrete technical scheme is:

a radiant electric heater comprising: a heat preservation box; the snakelike tube panel is arranged in the heat insulation box and comprises a plurality of heat exchange tubes, the heat exchange tubes are S-shaped and form a plurality of inner bending grooves and outer bending grooves, the heat exchange tubes are arranged in an array, and two ends of each heat exchange tube are arranged on the heat insulation box; the heating tube panel is installed in the heat insulation box, and a plurality of heating tube panels are inserted into the inner bending grooves and/or the outer bending grooves and used for heating the heat exchange tubes.

Preferably, the surface of the heat exchange tube is provided with a heat absorption coating.

Preferably, the heat generating tube panel includes: the heating pipes are arranged in an array, and correspond to the heat exchange pipes one by one; and the heating pipe is fixed on the heating bracket, and the heating bracket is fixed on the heat insulation box.

Preferably, the heating power of the heat-generating tube panel is reduced from the inlet end to the outlet end of the serpentine tube panel.

Preferably, the serpentine tube panel further comprises: the shunt pipe is fixed at the inlet end of the heat exchange pipe; and the collecting pipe is fixed at the outlet end of the heat exchange pipe.

Wherein, still include: an inlet flange mounted on the shunt tube; and the outlet flange is arranged on the collecting pipe.

Compared with the prior art the utility model discloses following beneficial effect has:

the utility model provides a pair of radiant electric heater has effectively improved heat exchange efficiency, has reduced the volume, has reduced the energy consumption, especially under same output's the condition, electric heater's volume is 1/2 of traditional radiant electric heater volume.

Drawings

FIG. 1 is a schematic diagram of a radiant electric heater;

fig. 2 is a schematic diagram of a serpentine tube panel.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings.

Make the S-shaped with heat exchange tube 21, form snakelike tube panel 2, obtain a plurality of curved grooves, insert heating tube panel 3 in snakelike tube panel 2 ' S curved groove, heating tube panel 3 heats the heat exchange tube 21 of both sides, realize face-to-face two-way heat-conduction, the volume has been reduced, and the efficiency of heat transfer has been improved, 2 surface spraying of snakelike tube panel have high emissivity ' S black heat absorption coating simultaneously, further improve heat absorption efficiency, still set up heating tube panel 3 ' S heating power from high to low according to the flow direction of heat exchange tube 21 screen, realize abundant heat transfer, when by a wide margin reduce cost, the volume and the energy consumption of equipment have also been reduced greatly.

As shown in fig. 1 and 2, a radiant electric heater includes an incubator 1, a serpentine tube panel 2, and a heat-generating tube panel 3.

The serpentine tube panel 2 comprises a heat exchange tube 21, a shunt tube 24, a collecting tube 25, an inlet flange 26 and an outlet flange 27; the heat exchange tubes 21 are arranged in a plurality of arrays, the heat exchange tubes 21 are S-shaped to form a plurality of inner bending grooves 22 and outer bending grooves 23, one ends of the heat exchange tubes 21 are fixed on the flow dividing tubes 24, the other ends of the heat exchange tubes 21 are fixed on the collecting tubes 25, and the heat exchange tubes 21 are communicated with the flow dividing tubes 24 and the collecting tubes 25. The inlet flange 26 is arranged on the shunt pipe 24, the outlet flange 27 is arranged on the collecting pipe 25, the inlet flange 26 is communicated with the shunt pipe 24, the outlet flange 27 is communicated with the collecting pipe 25, and the inlet flange 26 and the outlet flange 27 are both fixed on the incubator 1.

The heating tube panel 3 comprises a heating tube 31 and a heating bracket 32, the heating tube 31 is fixed on the heating bracket 32 and is arranged in an array along the height direction of the heating bracket 32, and the heating bracket 32 is fixed in the heat insulation box 1. The heat pipe panel 3 is inserted into the inner curved groove 22, and the heat pipes 31 correspond to the heat exchange pipes 21 one by one and are used for heating the heat exchange pipes 21. The heating power of the heating tube panel 3 is reduced from the shunt tubes 24 to the collecting tubes 25 of the serpentine tube panel 2 in sequence, the problem that the allowance of the heat exchange tubes 21 at the inlet end is not fully exerted due to the fact that constant-power heating is adopted in the existing heating process is solved, the utilization rate of heat energy is improved, and energy consumption is reduced.

Snakelike tube panel 2 can effectively reduce the volume, and heating tube panel 3 inserts and can realize simultaneously heating the heat exchange tube 21 of both sides in curved groove 22, make full use of heating tube panel 3's heat, carry and reduced the energy consumption.

In order to further improve the heat exchange efficiency, the surface of the heat exchange tube 21 is provided with a heat absorbing coating.

The advantages are that:

1. according to inserting the heating tube panel between snakelike tube panel, effectively promoted the angle radiation factor of snakelike tube panel, can effectively reduce the temperature of heating tube panel.

2. And no heating element is arranged between the heat preservation box and the snakelike tube panel, so that the temperature of the outer surface of the shell is effectively reduced.

3. The snakelike tube panel can two-sidedly be heated, and the tube panel circumferencial direction, the temperature is more even.

4. Because the power of the heating tube panel is gradually reduced, the volume can be designed to be smaller.

5. The coating of the high radiation coefficient on snakelike tube panel surface effectively promotes the heat absorption capacity of snakelike tube panel, further reduces the temperature of heating tube panel.

6. Due to the advantages, the power surface load of the heating tube panel can be designed to be higher, the size of the equipment is designed to be smaller, and the energy consumption is further reduced.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and is not to be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the claims of the present invention.

Claims

1. A radiant electric heater, comprising:

an incubator (1);

the heat exchange tube panel comprises a snakelike tube panel (2), wherein the snakelike tube panel (2) is installed in the heat insulation box (1), the snakelike tube panel (2) comprises a plurality of heat exchange tubes (21), the heat exchange tubes (21) are S-shaped, a plurality of inner bending grooves (22) and outer bending grooves (23) are formed, the heat exchange tubes (21) are arranged in an array mode, and two ends of each heat exchange tube (21) are installed on the heat insulation box (1);

the heating tube panel (3) is installed in the heat insulation box (1), and the heating tube panel (3) is provided with a plurality of heating tubes, inserted into the inner bending groove (22) and/or the outer bending groove (23) and used for heating the heat exchange tubes (21).

2. A radiant electric heater as claimed in claim 1,

the surface of the heat exchange tube (21) is provided with a heat absorption coating.

3. A radiant electric heater as claimed in claim 1,

the heat-generating tube panel (3) includes:

the heating pipes (31) are arranged in a plurality of arrays, and the heating pipes (31) correspond to the heat exchange pipes (21) one by one; and

the heating device comprises a heating bracket (32), the heating pipe (31) is fixed on the heating bracket (32), and the heating bracket (32) is fixed on the heat preservation box (1).

4. A radiant electric heater as claimed in claim 1,

the heating power of the heating tube panel (3) is reduced from the inlet end to the outlet end of the serpentine tube panel (2) in sequence.

5. A radiant electric heater as claimed in claim 1,

the serpentine tube panel (2) further comprises:

the shunt tube (24), the said shunt tube (24) is fixed on the inlet end of the said heat exchange tube (21); and

the collecting pipe (25), the collecting pipe (25) is fixed at the outlet end of the heat exchange pipe (21).

6. A radiant electric heater as claimed in claim 5,

further comprising:

an inlet flange (26), said inlet flange (26) mounted on said shunt tube (24); and

an outlet flange (27), the outlet flange (27) being mounted on the manifold (25).