CN214199196U

CN214199196U - Improved heating core of air heater

Info

Publication number: CN214199196U
Application number: CN202022716422.2U
Authority: CN
Inventors: 林永坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-09-14
Anticipated expiration: 2030-11-20

Abstract

The utility model discloses a modified air heater core that generates heat, characterized by: including the link and with many spinal branchs vaulting pole that the link is fixed, leave the space between two adjacent spinal branchs vaulting poles, the winding has the heating wire on the bracing piece. After the heating core is arranged in an airflow channel in the heater, the heating wire is connected with a working power supply to ensure that the heater can work normally. Because the heating wire supports and fixes through the bracing piece, and there is great space between the bracing piece, the air current is from the space between the bracing piece department flow, consequently, the air current has bigger circulation space, compare in traditional core that generates heat, the air is lower when flowing through this modified core that generates heat, the flow is bigger, the heat that can make the heating wire produce is transmitted to the air and is taken away more high-efficiently, the condition that the overheated trigger power of heating wire restricts is difficult to appear, thereby can show the hot-blast output efficiency who promotes the air heater.

Description

Improved heating core of air heater

Technical Field

The utility model relates to an industry hot air blast apparatus, more specifically say, it relates to a modified air heater core that generates heat.

Background

The hot air blower is the best hot air source configuration of automatic machines such as a hot air conveying furnace, a drying furnace, an oven, a packaging machine and the like. The hot air blower consists of three parts, including blower, heater and control circuit, and has controlled working temperature and air flow rate. The heater of the hot air blower is internally provided with an airflow channel for air to flow through, a heating core is arranged in the airflow channel, when the blower blows air into the heater, the air flows through the airflow channel, and the air is heated to a certain temperature by the heating core in the process of flowing through the airflow channel, so that hot air is output.

Referring to fig. 1, a heating core of a conventional air heater generally includes a cylindrical barrel 1, a plurality of air vents 2 are formed in the barrel 1, heating wires 3 are inserted into the air vents 2, and the air vents 2 are used for allowing air to flow through and supporting the heating wires 3. During operation of the air heater, air flows through the vent hole 2 and is heated by the heating wire 3. The volume that is limited by the air current channel in the heater, the volume of the core that generates heat also can not be done too big, this kind of core structure that generates heat, because the space between core and the air current channel that generates heat is very little, the overwhelming majority air can only flow through from air vent 2, the airflow receives the restriction and the windage of the area of air vent great, the heat that heating wire 3 produced can not be transmitted to the air and taken away by the air high-efficiently, and the condition of overheated trigger power-off protection appears easily in heating wire 3, the output of heater has been restricted, lead to the hot air output efficiency of current air heater not high.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a core generates heat can improve the hot air output efficiency of air heater.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides an improved air heater core that generates heat, includes link and the many spinal branchs vaulting pole fixed with the link, leaves the space between two adjacent spinal branchs vaulting pole, the winding has the heating wire on the bracing piece.

As a preferable scheme: the support rod comprises a rod body and an insulating sleeve sleeved on the surface of the rod body.

As a preferable scheme: the electric heating wire is wound on the support rod in a loose spiral shape.

As a preferable scheme: the shape of each winding of the electric heating wire is an ellipse which rotates along the axial direction of the support rod.

As a preferable scheme: each circle of the electric heating wire is wound into a rhombus shape which rotates along the axial direction of the support rod.

As a preferable scheme: and a plurality of insulating lantern rings are continuously sleeved on the wiring end of the electric heating wire.

As a preferable scheme: the end part of the supporting rod is provided with a first compression ring and a second compression ring, a distance exists between the first compression ring and the second compression ring to form a compression groove, and the electric heating wire is embedded into the compression groove and is compressed and fixed.

As a preferable scheme: the first compression ring is fixedly connected with the support rod, the second compression ring is movably sleeved on the support rod, a first compression nut used for locking the second compression ring is further arranged at the end part of the support rod, and the first compression nut is in threaded connection with the end part of the support rod.

As a preferable scheme: the connecting frame is provided with a connecting piece, a through hole is formed in the connecting piece, the end of the supporting rod penetrates through the through hole, a second compression nut is arranged at the end of the supporting rod, and the second compression nut is in threaded connection with the supporting rod.

As a preferable scheme: the heating core further comprises a thermocouple, and the thermocouple is fixedly connected with the connecting frame.

Compared with the prior art, the utility model has the advantages that: after the heating core is arranged in an airflow channel in the heater, the heating wire is connected with a working power supply to ensure that the heater can work normally. Because the heating wire supports and fixes through the bracing piece, and there is great space between the bracing piece, the air current is from the space between the bracing piece department flow, consequently, the air current has bigger circulation space, compare in traditional core that generates heat, the air is lower when flowing through this modified core that generates heat, the flow is bigger, the heat that can make the heating wire produce is transmitted to the air and is taken away more high-efficiently, the condition that the overheated trigger power of heating wire restricts is difficult to appear, thereby can show the hot-blast output efficiency who promotes the air heater.

Drawings

FIG. 1 is a schematic structural diagram of a heat generating core in the prior art;

FIG. 2 is a schematic structural diagram of a heat generating core according to the first embodiment;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic cross-sectional view of a support rod according to the first embodiment;

FIG. 5 is a schematic view illustrating a winding structure of the heating wire according to the second embodiment;

fig. 6 is a schematic view of a winding structure of the heating wire according to the third embodiment.

1, a cylinder body; 2. a vent hole; 3. an electric heating wire; 4. a first connecting frame; 5. a second link frame; 6. a support bar; 601. a rod body; 602. an insulating sleeve; 7. an electrode; 8. a thermocouple; 9. connecting sheets; 10. a first clamp ring; 11. a second clamp ring; 12. a compaction groove; 13. a first compression nut; 14. a second compression nut; 15. an insulating collar; 16. and (7) installing holes.

Detailed Description

The first embodiment is as follows:

referring to fig. 2, an improved heating core of an air heater includes a first connecting frame 4 and a second connecting frame 5 which are oppositely arranged, and a plurality of supporting rods 6 which are arranged between the first connecting frame 4 and the second connecting frame 5, wherein two ends of each supporting rod 6 are respectively connected and fixed with the first connecting frame 4 and the second connecting frame 5, a space is left between two adjacent supporting rods 6, and an electric heating wire 3 is wound on each supporting rod 6.

The heating wire 3 in this embodiment is wound on the support rod 6 in a loose spiral shape, i.e. there is a distance between two adjacent turns of the heating wire 3.

After the heating core is arranged in an airflow channel in the heater, the heating wire 3 is connected with a working power supply to ensure that the heater can work normally. Because the heating wire 3 supports and fixes through bracing piece 6, and there is great space between the bracing piece 6, the air current is from the space between the bracing piece 6 and flow, consequently, the air current has bigger circulation space, compare in traditional core that generates heat, the air is lower when flowing through this modified core that generates heat, the flow is bigger, the heat that can make the heating wire 3 produce is transmitted to the air and is taken away more high-efficiently, the condition that the overheated trigger power of heating wire 3 restricts is difficult to appear, thereby can show the hot air output efficiency who promotes the air heater.

The support rods 6 in this embodiment are parallel to each other, and the support rods 6 are arranged in an array.

Referring to fig. 3, in the present embodiment, a first clamp ring 10 and a second clamp ring 11 are coaxially disposed at the end of the support rod 6, a distance is formed between the first clamp ring 10 and the second clamp ring 11 to form a clamp groove 12, and the heating wire 3 is embedded in the clamp groove 12 and is clamped and fixed. So make the both ends of heating wire 3 all clamped fixedly, guarantee that heating wire 3 reliable and stable winding is fixed on bracing piece 6, the condition that the pine takes off can not appear.

More specifically: first clamp ring 10 and bracing piece 6 fixed connection in this embodiment, and second clamp ring 11 movable sleeve locates on bracing piece 6, and second clamp ring 11 can follow the length direction round trip movement of bracing piece 6 promptly, can adjust the width that compresses tightly groove 12 through the position of removing second clamp ring 11, makes to compress tightly groove 12 and can be applicable to the heating wire 3 of different thicknesses. A first compression nut 13 for locking the second compression ring 11 is further arranged at the end of the support rod 6, the first compression nut 13 is in threaded connection with the end of the support rod 6, namely, the end surface of the support rod 6 is provided with an external thread, and an internal thread is arranged in the first compression nut 13.

In order to facilitate the detachment and maintenance of the support rod 6, in this embodiment, a detachable connection structure is adopted between the support rod 6 and the first connecting frame 4 and the second connecting frame 5. Referring to fig. 3, taking the first connecting frame 4 as an example: the first connecting frame 4 is provided with a connecting sheet 9, the connecting sheet 9 is provided with a through hole (not shown in the figure), the end part of the supporting rod 6 penetrates through the through hole, the end of the supporting rod 6 is provided with a second compression nut 14, and the second compression nut 14 is in threaded connection with the supporting rod 6. The first connecting frame 4 can be disassembled after the second compression nut 14 is unscrewed, and the support rods 6 can be taken out individually after the first connecting frame 4 and the second connecting frame 5 are disassembled.

The heating core in the embodiment further comprises a thermocouple 8, the thermocouple 8 is fixedly connected with the first connecting frame 4, and the thermocouple 8 is used for being connected with a controller of the heating core to assist in realizing power control of the heating core.

In order to facilitate the installation of the heat generating core in the heater, mounting holes 16 are provided on both the first and second connection frames 4 and 5.

As shown in fig. 2, an electrode 7 is connected to an end of the heating wire 3, and the heating core with the electrode 7 can be connected to a controller relatively easily.

In addition, considering that the wiring end of the heating wire 3 is reserved with a certain length, after the wiring end of the heating wire 3 is wired with the controller, the heating wire 3 with the redundant length needs to be folded or coiled (i.e., redundant wires need to be arranged) so as to prevent the redundant heating wire 3 from being in direct contact with the shell of the heater or overlapping contact with some parts on the heating wire 3, thereby causing the heating wire 3 to have a short circuit or the heater to have electric leakage.

In this embodiment, the plurality of insulating sleeve rings 15 are continuously sleeved on the connection ends of the heating wires 3, so that the bending property of the heating wires 3 is ensured, and meanwhile, the heating wires 3 are prevented from contacting with the shell of the heater when arranging redundant wires through the insulation of the insulating sleeve rings 15, and the overlapping contact of parts on the heating wires 3 is avoided, thereby improving the safety of the heating property. The insulating collar 15 here is an insulating ceramic ring.

Referring to fig. 4, the supporting rod 6 in this embodiment includes a rod body 601 and an insulating sleeve 602 disposed on a surface of the rod body 601. The insulating sleeve 602 plays a role in blocking and insulating, and can prevent the short circuit from occurring after the heating wire 3 contacts the rod body 601, thereby protecting the heating wire 3. The insulating sleeve 602 in this embodiment is an insulating ceramic tube.

The insulating ceramic material has good insulativity and high temperature resistance, can be used in a water vapor environment, is not easy to age, and can improve the reliability and prolong the service life of the heating core.

In other embodiments, a single set of attachment brackets may be used.

Example two:

referring to fig. 5, the present embodiment is different from the first embodiment in a winding manner of the heating wire 3. Each turn of the heating wire 3 in this embodiment is formed in an ellipse shape axially rotated along the support rod 6. So around the law messenger heating wire 3 and bracing piece 6 between have certain space to there is great space between making adjacent two rings of heating wires 3, can increase the area of contact of air and heating wire 3, make the heat that heating wire 3 produced can be taken away by the air more fast more efficiently, can promote the heating effect of the core that generates heat to the air, can further avoid the overheated condition to appear in heating wire 3 again.

Example three:

referring to fig. 6, the present embodiment is different from the first embodiment in a winding manner of the heating wire 3. Each turn of the heating wire 3 in this embodiment is formed in a diamond shape which is axially rotated along the support rod 6. The beneficial effects of such a winding method are described in the second embodiment, which is not repeated herein!

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An improved heating core of an air heater is characterized in that: including the link and with many spinal branchs vaulting pole that the link is fixed, leave the space between two adjacent spinal branchs vaulting poles, the winding has the heating wire on the bracing piece, every winding shape of heating wire is the rhombus along bracing piece axial rotation.

2. The improved heat generating core of air heater as claimed in claim 1, wherein: the support rod comprises a rod body and an insulating sleeve sleeved on the surface of the rod body.

3. The improved heat generating core of air heater as claimed in claim 1, wherein: the electric heating wire is wound on the support rod in a loose spiral shape.

4. The improved heat generating core of air heater as claimed in claim 1, wherein: and a plurality of insulating lantern rings are continuously sleeved on the wiring end of the electric heating wire.

5. The improved heat generating core of air heater as claimed in claim 1, wherein: the end part of the supporting rod is provided with a first compression ring and a second compression ring, a distance exists between the first compression ring and the second compression ring to form a compression groove, and the electric heating wire is embedded into the compression groove and is compressed and fixed.

6. The improved heat generating core of air heater as claimed in claim 5, wherein: the first compression ring is fixedly connected with the support rod, the second compression ring is movably sleeved on the support rod, a first compression nut used for locking the second compression ring is further arranged at the end part of the support rod, and the first compression nut is in threaded connection with the end part of the support rod.

7. The improved heat generating core of air heater as claimed in claim 1, wherein: the connecting frame is provided with a connecting piece, a through hole is formed in the connecting piece, the end of the supporting rod penetrates through the through hole, a second compression nut is arranged at the end of the supporting rod, and the second compression nut is in threaded connection with the supporting rod.

8. The improved heat generating core of air heater as claimed in claim 1, wherein: the heating core further comprises a thermocouple, and the thermocouple is fixedly connected with the connecting frame.