CN211296972U

CN211296972U - Heating single tube, heating core and heater

Info

Publication number: CN211296972U
Application number: CN201922394879.3U
Authority: CN
Inventors: 刘鑫; 万伟伟; 孙雨; 王玮
Original assignee: Xiaogan Huagong Gaoli Electron Co Ltd
Current assignee: Xiaogan Huagong Gaoli Electron Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-08-18
Anticipated expiration: 2029-12-26

Abstract

The utility model provides a heating single tube, heating core and heater relates to firing equipment technical field. The heating single tube comprises a heating sheet set, an insulating plate, an insulating film and two electrode plates which are arranged oppositely and at an interval; the heating sheet group is arranged between the two opposite electrode plates, the heating sheet group is provided with a head end and a tail end which are arranged along the length direction of the heating sheet group, the head end and the tail end are respectively connected with an insulating plate, the insulating film is wrapped on the outer sides of the electrode plates, the heating sheet group and the insulating plate, and one end of the electrode plate extends out of the insulating film and is connected with an electrode head; the heating core body comprises a plurality of heat dissipation strips and a plurality of heating single tubes, and the plurality of heat dissipation strips and the plurality of heating single tubes are alternately arranged at intervals, so that the insulating property of the PTC heating piece used in the prior art is reduced, the improvement of the product power is hindered, and the technical problem of electrical potential safety hazards exists simultaneously.

Description

Heating single tube, heating core and heater

Technical Field

The utility model relates to a firing equipment technical field especially relates to a heating single tube, heating core and heater.

Background

The PTC (Positive Temperature Coefficient) heating element is mostly applied to air conditioners, dryers, fan heaters, automobiles and other equipment which need to provide warm air, has the characteristics of rapid Temperature rise and wide voltage application range, can automatically control the Temperature when the fan fails, and has long service life. When the PTC heating element is actually used, the insulation property of the PTC heating element has obvious influence on the use performance of the PTC heating element, and when the insulation property is better, the voltage applied to the PTC heating element cannot leak outwards, and the short circuit of the PTC heating element cannot be caused. In the current market, most PTC heating elements used have the problem of insulativity, so that the power of the PTC heating element is low, and potential safety hazards exist.

In view of the above, there is a need for a heating tube, a heating core and a heater, which can solve the above problems.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide a heating single tube to alleviate the insulating nature of the PTC heating element that uses among the prior art lower, hinder the promotion of product power, have the technical problem of electrical safety hidden danger simultaneously.

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

the utility model provides a heating single tube, which comprises a heating plate group, an insulating plate, an insulating film and two electrode plates which are arranged oppositely and at intervals;

the heating sheet set is arranged between the two opposite electrode plates, the heating sheet set is provided with a head end and a tail end which are arranged along the length direction of the heating sheet set, the head end and the tail end are respectively connected with the insulating plate, the insulating film is wrapped on the outer sides of the electrode plates, the heating sheet set and the insulating plate, and one end of the electrode plate extends out of the insulating film and is connected with the electrode tip.

In any of the above technical solutions, further, the heat generating sheet set includes a plurality of heat generating sheets, and the plurality of heat generating sheets are arranged along a length direction of the heat generating sheet set; in the plurality of heating sheets, one end of each of the first heating sheet and the last heating sheet, which is far away from the adjacent heating sheet, is connected with the insulating plate.

In any one of the above embodiments, the insulating film is a polyamide film.

In any one of the above technical solutions, further, the heating single tube further includes an outer sleeve, and the outer sleeve is sleeved outside the insulating film.

A second object of the present invention is to provide a heating core for alleviating the above-mentioned at least one technical problem.

The utility model also provides a heating core, including a plurality of heat dissipation strips and a plurality of foretell heating single tube, and a plurality of the heat dissipation strip is with a plurality of the heating single tube interval is arranged in turn.

In any of the above technical solutions, further, the heating core further includes a busbar disposed at one end of the electrode plate extending out of the insulating film and fixedly connected to the electrode tip.

In any of the above technical solutions, further, the busbar is fixed to the electrode tip by spot welding, and/or the electrode tip is fixed to the electrode tip by spot welding.

A second object of the present invention is to provide a heater to alleviate at least one of the above technical problems.

The utility model also provides a heater, which comprises a shell and the heating core body, wherein the heating core body is arranged in the shell;

the shell is provided with a pouring side wall, a pouring gap is formed between the heating core body and the pouring side wall, and the pouring gap is used for pouring insulating liquid.

In any of the above technical solutions, further, the heater further includes a fuse set, and the fuse set is bonded to the heating core.

In any one of the above technical solutions, further, the heater further includes a control box, the control box is installed in the housing, a control board is disposed in the control box, the control board is connected to the heating core, the control board is connected to a first wire harness and a second wire harness, and the first wire harness and the second wire harness are respectively used for connecting circuits with different voltages.

In any of the above technical solutions, further, the heater further includes an upper cover, and the upper cover is fastened to one side of the control box far away from the heating core.

The utility model has the advantages that:

the utility model provides a pair of heating single tube, including the electrode slice that generates heat piece group, insulation board, insulating film and relative and interval set up, generate heat piece group and set up between relative electrode slice, and generate heat piece group and have head end and tail end, head end and tail end are arranged along the length direction that generates heat piece group, are connected with the insulation board respectively at head end and tail end. The insulating film wraps the outer sides of the heating sheet set, the insulating plate and the opposite electrode plates, and one ends of the electrode plates extend out of the insulating film and are used for connecting the electrode tips. The heating single tube enables the periphery of the heating plate group to have insulativity through the cooperation effect of the insulating plate and the insulating film. Meanwhile, the insulating film is wound on the electrode plate, so that the outer side of the electrode plate is ensured to have insulativity, the insulating property of the heating single tube is improved, and the heating power of the heating plate is further improved. Meanwhile, due to the improvement of the insulating property, the faults of electric leakage, short circuit and the like are effectively reduced, and the potential safety hazard is reduced.

The utility model provides a pair of heating core, including a plurality of heat dissipation strips and a plurality of foretell heating single tube, and a plurality of heat dissipation strips and a plurality of heating single tube interval in turn arrange, and then reduce the calorific capacity of heating core during operation, can realize above-mentioned at least one technological effect simultaneously.

The utility model provides a pair of heater, including casing and foretell heating core, the heating core is installed in the casing, and the casing has and pours the lateral wall, and the heating core has between the lateral wall and pours the clearance, and the insulating liquid can be pour to this pouring in the clearance, and then improves the security level protection of heater, can realize above-mentioned at least one technological effect simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an exploded schematic view of a heating single tube according to an embodiment of the present invention;

fig. 2 is a schematic view of a heating core provided in an embodiment of the present invention;

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

fig. 4 is a schematic view of a heater provided in an embodiment of the present invention;

fig. 5 is an exploded schematic view of a heater according to an embodiment of the present invention.

Icon: 10-heating a single tube; 11-heating sheet group; 12-an insulating plate; 13-an insulating film; 14-electrode slice; 15-an electrode head; 16-outer sleeve; 20-heat dissipation strips; 30-bus bar; 100-heating the core; 110-a fuse set; 111-heating sheet; 120-a control box; 130-a control panel; 140 — a first harness; 150-a second wire harness; 160-temperature sensor; 200-a housing; 210-a first housing; 220-a second housing; 300-insulating liquid; 400-upper cover.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

As shown in fig. 1, the heating single tube provided by the present embodiment includes a heat generating sheet set 11, an insulating sheet 12, an insulating film 13, and two electrode sheets 14 disposed opposite to and spaced apart from each other; heating plate group 11 sets up between two relative electrode slices 14, and heating plate group 11 has head end and tail end along self length direction and arrange, and head end and tail end are connected with insulation board 12 respectively, and insulating film 13 wraps up in the outside of electrode slice 14, heating plate group 11 and insulation board 12, and the one end of electrode slice 14 stretches out insulating film 13 and is connected with electrode tip 15.

In this embodiment, taking the placement direction of the heating single tube in fig. 1 as an example, and taking the case that the head end is located on the right side of the heating plate group 11 and the tail end is located on the left side of the heating plate group 11 as an example, an insulating plate 12 is fixed at the head end, and an insulating plate 12 is fixed at the tail end, so as to form an arrangement mode of the insulating plate 12-the heating plate group 11-the insulating plate 12 in sequence from the head end to the tail end, thereby improving the insulating properties of the head end and the tail end of the heating plate group 11. Meanwhile, the heating plate group 11 has an upper surface and a lower surface, an electrode plate 14 is fixedly arranged on the upper surface, an electrode plate 14 is fixedly arranged on the lower surface, and the two electrode plates 14 can also respectively cover the upper and lower surfaces of the two insulating plates 12, thereby forming a semi-finished product of the heating single tube. In addition, an insulating film 13 is wrapped outside the semi-finished product. The insulating film 13 is wound in the width direction of the heating sheet set 11, and is wound for two and a half turns to form an insulating film shell, so that the electrode plate 14, the heating sheet set 11 and the insulating plate 12 are all arranged in the insulating film shell, and the insulating performance of the whole heating single tube is improved. Meanwhile, two sides of the insulating film shell at the head end and the tail end of the heating sheet set 11 are respectively open, so that the two electrode plates 14 extend out of the connecting electrode head 15. The two electrode plates 14 are respectively a first electrode plate and a second electrode plate, a first extending end is arranged on one side of the first electrode plate facing the head end, a second extending end is arranged on one side of the second electrode plate facing the head end, and the first extending end and the second extending end are arranged at intervals along the width direction of the heating plate group 11. The number of electrode tip 15 is two, is first electrode tip and second electrode tip respectively, and the first electrode tip is connected to the first end of extending, and the second electrode tip is connected to the second end of extending.

In practical use, the two insulating plates 12 are respectively fixed at the head end and the tail end of the heating plate group 11 by an adhesive, and the two electrode plates 14 are respectively fixed at the upper surface and the lower surface of the heating plate group 11 by the adhesive.

Preferably, the insulating film 13 is a polyamide film. The polyamide film has good heat resistance, wide use temperature range, excellent electric insulation performance, high breakdown voltage resistance, high mechanical strength, good toughness and long service life. The insulating plate 12 is made of a ceramic plate. The ceramic plate has good antistatic performance, and can effectively improve the insulating performance of the head end and the tail end of the heating plate group 11.

With continuing reference to fig. 1, preferably, the heat generating sheet set 11 includes a plurality of heat generating sheets 111, and the plurality of heat generating sheets 111 are arranged along the length direction of the heat generating sheet set 11; among the plurality of heat generating sheets 111, an insulating plate 12 is connected to one end of each of the first heat generating sheet 111 and the last heat generating sheet 111, which is away from the adjacent heat generating sheet 111.

Specifically, the length direction of the electrode sheet 14 is the same as the length direction of the heating sheet group 11, the plurality of heating sheets 111 are sequentially arranged along the length direction of the electrode sheet 14, the head end of the first heating sheet 111 is the head end of the heating sheet group 11, and the tail end of the last heating sheet 111 is the tail end of the heating sheet group 11.

With continued reference to fig. 1, preferably, the heating single tube further includes an outer sleeve 16, and the outer sleeve 16 is disposed outside the insulating film 13.

Specifically, the outer tube 16 is a flat aluminum tube, and the length direction of the outer tube 16 is the same as the length direction of the electrode sheet 14. The outer sleeve 16 has a lumen extending therethrough in the longitudinal direction thereof, and the semi-finished product wrapped with the insulating film 13 can be inserted into the lumen. In actual use, after the semi-finished product to be wrapped with the insulating film 13 is inserted into the lumen, it is pressed by a roll press. At this time, in addition to the protective effect of the outer sleeve 16 on the inner semi-finished product thereof, since the insulating film 13 has high mechanical strength, the insulating film 13 also has a certain protective effect on the semi-finished product when being pressed by the roller press, so as to reduce damage to the heat generating sheet 111, the electrode sheet 14, and the insulating plate 12.

With continued reference to fig. 1, preferably, the electrode tip 15 is L-shaped, and one side of the L-shaped electrode tip 15 is fixed to the electrode tip 14 by spot welding. Only electric energy is consumed during spot welding, flux is not required to be filled, and meanwhile heating time during welding is short and welding speed is high. The electrode sheet 14 is a copper electrode.

As shown in fig. 2, the present embodiment further provides a heating core, which includes a plurality of heat dissipation strips 20 and a plurality of heating single tubes 10, and the plurality of heat dissipation strips 20 and the plurality of heating single tubes 10 are alternately arranged at intervals.

In the present embodiment, when the heat dissipation strip 20 and the single heating pipe 10 are mounted, taking the single heating pipe 10 as an example of being vertically placed, in this case, the upper surface of the single heating pipe 10 when horizontally placed is the left side surface when vertically placed, and the lower surface is the right side surface. The left side surface and the right side surface of the heating single tube 10 are respectively pressed with the heat dissipation strips 20, and then the heat dissipation strips 20 and the heating single tube 10 are fixedly connected through an adhesive, so that the heat dissipation strips 20 and the heating single tube 10 are alternately arranged to form a heating core body.

The heat dissipation strip 20 is a corrugated heat dissipation strip 20, and has good heat dissipation performance.

With reference to fig. 2 and fig. 3, preferably, the heating core further includes a bus bar 30, and the bus bar 30 is disposed at one end of the electrode plate 14 extending out of the insulating film 13 and is fixedly connected to the electrode head 15.

In this embodiment, when the heating single pipe 10 is vertically placed, the head end of the heat generating sheet group 11 is vertically upward, and the tail end is vertically downward. The electrode head 15 is located at the head end of the heating sheet group 11. The first extending end on the first electrode plate and the second extending end on the second electrode plate both face the head end and are at right angles to the top end faces of the heating single tube 10 and the heat dissipation strip 20. The number of the busbar 30 is two, and the busbar is a first busbar and a second busbar respectively, a first electrode tip on the first extension end is welded and fixed with the first busbar, and a second electrode tip on the second extension end is welded and fixed with the second busbar.

Preferably, the busbar 30 is a copper busbar, and the busbar 30 is fixed to the electrode tip 15 by spot welding.

With continued reference to fig. 3, in actual use, one side of the L-shaped electrode tip 15 has a mounting groove into which the extending end of the electrode tab 14 can be inserted, and then the two are welded and fixed. Meanwhile, the end face of the extending end of the edge on the electrode tip 15 is attached to the busbar 30, and then the electrode tip 15 and the busbar 30 are welded and fixed.

As shown in fig. 4 and 5, the present embodiment further provides a heater, which includes a housing 200 and the heating core 100, wherein the heating core 100 is installed in the housing 200; the shell 200 has a casting sidewall, and a casting gap is formed between the heating core 100 and the casting sidewall, and the casting gap is used for casting the insulating liquid 300.

In the present embodiment, the housing 200 includes a first housing 210 and a second housing 220, and the first housing 210 and the second housing 220 are disposed opposite to each other and spaced apart from each other, and a receiving cavity is formed therebetween, and the heating core 100 is installed in the receiving cavity. The casting sidewall includes a first sidewall and a second sidewall, the first sidewall is disposed on a side of the first shell 210 facing the heating core 100, and the second sidewall is disposed on a side of the second shell 220 facing the heating core 100. And a first casting gap is formed between the heating core 100 and the first sidewall, and a second casting gap is formed between the heating core 100 and the second sidewall. During actual use, the insulating liquid 300 can be filled and sealed into the first pouring gap and the second pouring gap, and then the insulating liquid is cured at high temperature, so that the protection level of the heating core body 100 is improved.

Wherein, the insulating liquid 300 is silicon rubber.

Wherein, the heating core 100 can also be provided with a plurality of. At this time, a partition plate is disposed along the length direction of the housing 200, and the partition plate divides the accommodating cavity in the housing 200 into a plurality of small cavities, and each of the small cavities is installed with one heating core 100. The heating core 100 can be fixed in the housing 200 by a fastener such as a screw. Meanwhile, the first housing 210 and the second housing 220 are fastened by screws.

It should be added that the partition plate may be only disposed on the first shell 210, only disposed on the second shell 220, or disposed on both the first shell 210 and the second shell 220, as long as the installation of a plurality of heating cores 100 is achieved.

With continued reference to fig. 5, the heater preferably further includes a fuse assembly 110, the fuse assembly 110 being bonded to the heater core 100. Specifically, a fuse set 110 is bonded to one side of the heating core 100 along its length direction, and a temperature sensor 160 is bonded to the heating core, and the temperature sensor 160 is electrically connected to the fuse set 110. The temperature sensor 160 is used for detecting the temperature of the heating core 100, when the temperature sensor 160 detects that the temperature of the heating core 100 exceeds a critical value, the temperature sensor can send a signal to the fuse set 110, the fuse set 110 can be fused to cut off the working circuit of the heating core 100, and the safety of the heating core 100 during working is improved through the mutual matching of the temperature sensor 160 and the fuse set 110.

In the present embodiment, two heating cores 100 are provided, and the fuse set 110 and the temperature sensor 160 are respectively bonded to one side surface of the two heating cores 100 away from each other.

With continuing reference to fig. 4 and 5, preferably, the heater further includes a control box 120, the control box 120 is mounted on the housing 200, a control board 130 is disposed in the control box 120, the control board 130 is connected to the heating core 100, the control board 130 is connected to a first wire harness 140 and a second wire harness 150, and the first wire harness 140 and the second wire harness 150 are respectively used for connecting circuits with different voltages.

In the present embodiment, the control box 120 is installed on the top of the heating core 100, the control board 130 is installed in the control box 120, and the control board 130 is electrically connected to the heating core 100. Meanwhile, a first wire harness 140 and a second wire harness 150 are led out from the control board 130, the first wire harness 140 is used for connecting a high-voltage circuit, the second wire harness 150 is used for connecting a low-voltage circuit, and different heating voltages are applied to the heating core 100 through the first wire harness 140 and the second wire harness 150, so that the heating work of the heating core 100 is realized.

It should be added that the control board 130 is provided with a microprocessor and a control circuit, and the fuse set 110, the temperature sensor 160, and the like can be electrically connected to the control board 130. However, how the control board 130 controls the first wire harness 140, the second wire harness 150, the fuse set 110, and the temperature sensor 160 to operate belongs to the conventional technology in the art, and does not belong to the improvement point of the present application, and therefore, the description thereof is omitted.

With continued reference to fig. 4 and 5, in practical use, the heater further includes an upper cover 400, and the upper cover 400 is fastened to a side of the control box 120 away from the heating core 100. Wherein the top of the control box 120 is open to facilitate replacement of the electronic components in the control box 120. The top cover 400 is fastened to the opening and is engaged with the control box 120. In this embodiment, the uncovered edge of control box 120 is provided with the card protrudingly, and the edge of upper cover 400 is provided with the bayonet socket, and the bayonet socket cooperates with the protruding joint of card, and then realizes the installation of upper cover 400 and control box 120.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. The heating single tube is characterized by comprising a heating plate group (11), an insulating plate (12), an insulating film (13) and two electrode plates (14) which are arranged oppositely and at intervals;

the heating sheet set (11) is arranged between the two opposite electrode plates (14), the heating sheet set (11) is provided with a head end and a tail end which are arranged along the length direction of the heating sheet set, the head end and the tail end are respectively connected with the insulating plate (12), the insulating film (13) wraps the electrode plates (14), the heating sheet set (11) and the outer side of the insulating plate (12), and one end of each electrode plate (14) extends out of the insulating film (13) and is connected with an electrode tip (15).

2. The heating monotube according to claim 1, wherein the heat generating sheet group (11) comprises a plurality of heat generating sheets (111), and the plurality of heat generating sheets (111) are arranged along a length direction of the heat generating sheet group (11); in the plurality of heating sheets (111), the insulating plate (12) is connected to one end of each of the first heating sheet (111) and the last heating sheet (111) which is far away from the adjacent heating sheet (111).

3. The heated monotube of claim 1, wherein the insulating film (13) is a polyamide film.

4. A heating monotube according to any one of claims 1 to 3, which further comprises an outer sleeve (16), the outer sleeve (16) being fitted outside the insulating film (13).

5. A heating core, comprising a plurality of heat dissipation strips (20) and a plurality of heating tubes (10) according to any one of claims 1 to 4, wherein the plurality of heat dissipation strips (20) and the plurality of heating tubes (10) are alternately arranged at intervals.

6. The heating core body according to claim 5, further comprising a busbar (30), wherein the busbar (30) is arranged at one end of the electrode sheet (14) extending out of the insulating film (13) and fixedly connected to the electrode tip (15).

7. A heating core body according to claim 6, characterized in that the busbar (30) is fixed to the electrode head (15) by spot welding and/or the electrode head (15) is fixed to the electrode sheet (14) by spot welding.

8. A heater comprising a housing (200) and a heating core (100) according to any one of claims 5 to 7, the heating core (100) being mounted within the housing (200);

the shell (200) is provided with a pouring side wall, a pouring gap is formed between the heating core body (100) and the pouring side wall, and the pouring gap is used for pouring insulating liquid (300).

9. The heater of claim 8, further comprising a fuse set (110), the fuse set (110) being bonded to the heating core (100).

10. The heater according to claim 8, further comprising a control box (120), wherein the control box (120) is mounted on the housing (200), a control board (130) is arranged in the control box (120), the control board (130) is connected with the heating core (100), a first wiring harness (140) and a second wiring harness (150) are connected with the control board (130), and the first wiring harness (140) and the second wiring harness (150) are respectively used for connecting circuits with different voltages.