Sheet type heater

Abstract

The utility model belongs to the technical field of heaters, and particularly relates to a sheet type heater which comprises an insulating substrate, longitudinal grooves and latitudinal grooves are formed in the insulating substrate, the longitudinal grooves and the latitudinal grooves are crisscrossed, and electric heating pipes are connected in the longitudinal grooves in an embedded mode. The electric heating pipes are bent at the end parts of the warp-wise grooves through the weft-wise grooves and then return to the adjacent warp-wise grooves; the insulation substrate is provided with warp-wise grooves and weft-wise grooves, the warp-wise grooves and the weft-wise grooves cut the insulation substrate into a plurality of isolation steps which are uniformly distributed, the centers of the isolation steps are provided with connecting through holes, the top surface of the insulation substrate is provided with a heat conduction cover plate, and the bottom surface of the heat conduction cover plate is uniformly provided with connecting guide columns. The electric heating tubes can be wound in the warp grooves and the weft grooves to form a set shape, or can be densely arranged on one side of the insulating substrate to increase the heating power of the insulating substrate per unit area, or can be densely arranged on the side of the insulating substrate to increase the heating power of the side of the insulating substrate; in this way, targeted adjustment of the heating power and the heating area can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heaters, in particular to a sheet type heater. Background Art

[0002] A sheet heater is an electrical component that is in the shape of a thin sheet or a thin plate and converts electrical energy into thermal energy. Patent CN219068394U proposes a plate heater, including a heat conducting plate, a mounting frame is detachably provided on the peripheral side of the heat conducting plate, a heating element is provided in the mounting frame, the heating element is in heat transfer conflict with the heat conducting plate, a limiting slide is provided on the heat conducting plate, and a heat sink is slidably provided on the heat conducting plate in the limiting slide. According to analysis, this type of plate heater has the following shortcomings: First, the heating power specification and the distribution of heating components of this type of plate heater are fixed, and the heating power and heating area cannot be flexibly adjusted; second, the top and bottom components of this type of plate heater are connected by screws or glued, which makes installation and disassembly time-consuming and labor-intensive, and cannot be repaired or adjusted. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies of the prior art, the utility model provides a sheet-type heater, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A sheet heater comprises an insulating substrate, on which crisscrossing warp grooves and weft grooves are provided, in which electric heating tubes are embedded and connected, and which are bent through the weft grooves at the ends of the warp grooves and then return to the adjacent warp grooves; the warp grooves and weft grooves cut the insulating substrate into a plurality of evenly distributed isolation steps, the centers of the isolation steps are provided with connecting through holes, the top surface of the insulating substrate is provided with a heat-conducting cover plate, and the bottom surface of the heat-conducting cover plate is evenly provided with connecting guide pillars, which are adapted to be embedded in the connecting through holes at corresponding positions.

[0008] Furthermore, an adjustable frame is fixedly connected to the side of the insulating substrate, an upper inner rib and a lower inner rib are fixedly provided on the inner side of the adjustable frame, a lower annular groove is opened on the side of the insulating substrate, an upper annular groove is opened on the side of the heat-conducting cover plate, the upper inner rib is fitted and engaged with the upper annular groove, the lower inner rib is fitted and engaged with the lower annular groove, a break is opened in the middle of the adjustable frame, one end of the adjustable frame break is fixedly connected with a nut, the other end of the adjustable frame break is rotatably connected with an adjusting screw, and the adjusting screw is fitted and threaded with the nut.

[0009] Furthermore, the longitudinal grooves and the latitudinal grooves are filled with heat-conducting medium.

[0010] Furthermore, the variable angle of the isolation step is an arc chamfered structure.

[0011] Furthermore, a reflective film layer and a heat insulation layer are bonded and connected to the bottom surface of the insulating substrate.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a sheet-type heater, which has the following beneficial effects:

[0014] In the utility model, the electric heating tube can be wound into a set shape in the warp groove and the weft groove, or can be densely arranged on one side of the insulating substrate to increase the heating power per unit area, or densely arranged on the side of the insulating substrate to increase the heating power on the side; in this way, targeted adjustment of the heating power and the heating area can be achieved;

[0015] The utility model can tighten the adjusting screw to retract the adjustable frame, firmly clamp the insulating substrate and the heat-conducting cover plate together, and loosen the adjusting screw to extend the adjustable frame, so that the adjustable frame can be disassembled from the sides of the insulating substrate and the heat-conducting cover plate, and then the heat-conducting cover plate can be smoothly separated from the insulating substrate without removing the screws on the sides of the heat-conducting cover plate and the insulating substrate or the glue between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view schematic diagram of the main structure of the utility model in an exploded state;

[0017] Figure 2 It is a bottom view schematic diagram of the main structure of the utility model in an exploded state;

[0018] Figure 3 This is the first distribution structure of the electric heating tube of the utility model;

[0019] Figure 4 This is the second distribution structure of the electric heating tube of the utility model.

[0020] In the figure: 1. insulating substrate; 2. electric heating tube; 3. isolation step; 4. connecting perforation; 5. heat-conducting cover plate; 6. connecting guide column; 7. adjustable frame; 71. upper inner rib; 72. lower inner rib; 73. nut; 74. adjusting screw; 8. reflective film layer; 9. thermal insulation layer; 11. meridian groove; 12. weft groove; 13. lower annular groove; 51. upper annular groove. DETAILED DESCRIPTION

[0021] 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.

[0022] Example

[0023] like Figure 1 , 2 As shown in Figures 3 and 4, a sheet heater proposed in one embodiment of the utility model comprises an insulating substrate 1, on which criss-crossing warp grooves 11 and weft grooves 12 are provided, and electric heating tubes 2 are embedded and connected in the warp grooves 11, and the electric heating tubes 2 are bent through the weft grooves 12 at the ends of the warp grooves 11 and then return to the adjacent warp grooves 11; the warp grooves 11 and the weft grooves 12 cut the insulating substrate 1 into a plurality of evenly distributed isolation steps 3, and a connecting through-hole 4 is provided in the center of the isolation step 3, and a heat-conducting cover plate 5 is provided on the top surface of the insulating substrate 1, and connecting guide pillars 6 are evenly provided on the bottom surface of the heat-conducting cover plate 5, and the connecting guide pillars 6 are adapted to be embedded in the connecting through-holes 4 at the corresponding positions.

[0024] In this embodiment, the electric heating tube 2 can be wound into a set shape in the longitudinal groove 11 and the latitudinal groove 12, including Figure 3 The serpentine trend and Figure 4 The spiral direction can be set to other shapes according to needs; they can also be densely arranged on one side of the insulating substrate 1 to increase the heating power per unit area, or densely arranged on the side of the insulating substrate 1 to increase the heating power on its side; in this way, targeted adjustment of the heating power and the heating area can be achieved.

[0025] Furthermore, an adjustable frame 7 is fixedly connected to the side of the insulating substrate 1, an upper inner rib 71 and a lower inner rib 72 are fixedly provided on the inner side of the adjustable frame 7, a lower annular groove 13 is provided on the side of the insulating substrate 1, an upper annular groove 51 is provided on the side of the heat-conducting cover plate 5, the upper inner rib 71 is fitted and engaged with the upper annular groove 51, the lower inner rib 72 is fitted and engaged with the lower annular groove 13, a break is provided in the middle of the adjustable frame 7, one end of the break of the adjustable frame 7 is fixedly connected with a nut 73, and the other end of the break of the adjustable frame 7 is rotatably connected with an adjusting screw 74, and the adjusting screw 74 is fitted and threaded with the nut 73.

[0026] When the heat conducting cover plate 5 is firmly fixed to the bottom surface of the heat conducting cover plate 5, the heat conducting cover plate 5 can be easily fixed to the bottom surface of the heat conducting cover plate 5, and ...

[0027] Furthermore, the warp grooves 11 and the weft grooves 12 are filled with a heat-conducting medium, which is an insulating thermal grease that can evenly transfer the heat energy generated by the electric heating tube 2 to the heat-conducting cover plate 5, and then transfer it to the area that needs to be heated through the heat-conducting cover plate 5.

[0028] Furthermore, the angle of the isolation step 3 is an arc chamfered structure, so that the electric heating tube 2 can be bent smoothly.

[0029] Furthermore, the bottom surface of the insulating substrate 1 is bonded with a reflective film layer 8 and a heat insulating layer 9. The reflective film layer 8 is a silver-plated layer or an aluminum-plated layer, which can reflect heat energy and realize unidirectional conduction of heat energy; the heat insulating layer 9 is made of asbestos material, which can play a role in isolating heat energy and further realize unidirectional conduction of heat.

[0030] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sheet heater, comprising an insulating substrate (1), characterized in that: The insulating substrate (1) is provided with crisscrossed warp grooves (11) and weft grooves (12); the warp grooves (11) are embedded with electric heating tubes (2); the electric heating tubes (2) are bent at the ends of the warp grooves (11) through the weft grooves (12) and then return to the adjacent warp grooves (11); the warp grooves (11) and the weft grooves (12) cut the insulating substrate (1) into a plurality of evenly distributed isolation steps (3); a connecting through hole (4) is provided at the center of the isolation step (3); a heat-conducting cover plate (5) is provided on the top surface of the insulating substrate (1); connecting guide pillars (6) are evenly distributed on the bottom surface of the heat-conducting cover plate (5); the connecting guide pillars (6) are adapted to be embedded in the connecting through holes (4) at corresponding positions.

2. A sheet heater according to claim 1, characterized in that: The side of the insulating substrate (1) is fixedly connected with an adjustable frame (7), the inner side of the adjustable frame (7) is fixedly provided with an upper inner rib (71) and a lower inner rib (72), the side of the insulating substrate (1) is provided with a lower annular groove (13), the side of the heat-conducting cover plate (5) is provided with an upper annular groove (51), the upper inner rib (71) is fitted with the upper annular groove (51), the lower inner rib (72) is fitted with the lower annular groove (13), a break is provided in the middle of the adjustable frame (7), one end of the break of the adjustable frame (7) is fixedly connected with a nut (73), the other end of the break of the adjustable frame (7) is rotatably connected with an adjusting screw (74), the adjusting screw (74) is fitted with the nut (73) and is screwed together.

3. A sheet heater according to claim 1, characterized in that: The longitudinal grooves (11) and the latitudinal grooves (12) are filled with heat-conducting medium.

4. A sheet heater according to claim 1, characterized in that: The variable angle of the isolation step (3) is a circular arc chamfered structure.

5. A sheet heater according to claim 1, characterized in that: A reflective film layer (8) and a heat insulation layer (9) are bonded and connected to the bottom surface of the insulating substrate (1).

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